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CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1010 Project Management Rev :
Author :
Objective
To perform the project and interface management activities associated with implementation of the subsea FEED.
Activities Description
Subsea FEED team management
Schedule management and progress reporting
Liaison with Client Definition of codes and standards
Change control Weekly reporting and progress meetings
Overseeing development of final FEED documentation and ITT packages
Input Requirements
Output / Deliverables
FEED schedule
Schedule management and progress reporting
Liaison with Client
Definition of codes and standards
Change control
Weekly reporting and progress meetings
Overseeing development of final FEED documentation and ITT packages
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1020 Quality Assurance Rev :
Author :
Objective
Quality Assurance for the Subsea FEED
Activities Description
Develop and issue QA Manual for project use during subsea FEED
Develop and Issue QA Plan for subsea FEED
Input Requirements
Output / Deliverables
Subsea FEED QA Manual
QA Plan for FEED Audit Schedule
Audit Reports
Corrective Action Reports
Follow-up Reports
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1030 Document Control Rev :
Author :
Objective
Management of Project Documents
Activities Description
Produce Subsea FEED Document Control Manual
Maintain Document Register Control and issue outgoing documentation
Receipt and control of incoming documentation
Input Requirements
Key deliverable dates Deliverables Schedule (CTR 1050)
Output / Deliverables
Master Document Register (MDR)
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1040 FMECA and RAM Studies Rev :
Author :
Objective
Define sparing and redundancy philosophy for subsea facilities
Activities Description
Perform a FMECA study to identify, record and understand potential failure modes and uncertainties
Quantify reliability and availability of individual items of equipment Development of models to quantify reliability, availability and maintainability of each defined system to cover turn-up,
operational and mechanical cases
Input Requirements
Client supplied reliability data Manufacturer’s data
OREDA
Output / Deliverables
Report on FMECA studies Report on RAM studies
Input to project Sparing Philosophy for subsea facilities
Notes, Assumptions, etc
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1050 Scheduling Rev :
Author :
Objective
Planning services to the overall project plan
Activities Description
Generate and maintain a Level 2 schedule for the overall subsea development from FEED to project completion. The
project schedule shall reflect and integrate Client milestones and planned field activities Identify a Consents and Approvals schedule
Integrate data from procurement support
Input Requirements
Information from procurement support (CTR 1060)
Output / Deliverables
Level 2 schedule for post-FEED activities
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1060 Procurement Support Rev :
Author :
Objective
To establish a subsea Long lead Item (LLI) List for the project (taking into account of, but not limited to, COMPANY
Frame Agreement items) To develop a post-FEED subsea procurement plan for the project
To develop technical specifications and datasheets for long lead items included (but not limited to) COMPANY Frame Agreement items.
Support Company in the technical evaluation of offered components under the frame agreement
Assist Company in developing all technical documentation for the frame agreement work order packages including scope
of supply, supplier data requirements list (SDRL) etc in the requisition documentation
Activities Description
Contact with vendors to establish current (and future) expected lead times for equipment and materials supply (outwith
COMPANY’s Frame Agreements)
Discuss and agree likely durations for post FEED procurement activities
Develop specifications and data sheets
Assist with technical queries during tendering period
Carry out technical evaluation of tenders
Assist in the development of work order package requisitions, SDRLs.
Input Requirements
Definition of subsea facilities and equipment required
Output / Deliverables
Subsea Long Lead Items (LLI) List
Produce Vendor Bid Lists for the identified LLI
Post-FEED procurement plan for input into the overall project schedule (Level 2)
Specifications,
Technical evaluation criteria, Requisition and SDRL development
Notes, Assumptions, etc
Company is expecting 3 Frame agreement tenders per frame agreement type. Contractor should anticipate technical
queries and technical evaluation with 3 tenderers.
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1070 Cost Estimating Rev :
Author :
Objective
To provide a comprehensive life cycle cost report, including abandonment, for the management, engineering,
procurement, installation, testing, pre-commissioning and commissioning of the subsea facilities
Activities Description
Contact with vendors to establish budget estimates as required outside COMPANY’s Frame Agreement items Agree a cost basis with COMPANY
Produce a tabulated cost estimate for CAPEX, OPEX and abandonment costs
Input Requirements
Agreed cost norms
Discussion with vendors as required.
Output / Deliverables
Cost Estimation Basis Report
Field Development Cost Report for subsea equipment and facilities and their installation and pre-commissioning
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
CTR FORM
COST TIME & RESOURCE
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1080 Risk and Opportunities Rev :
Author :
Objective
To identify risks and opportunities for the project
To investigate risk reduction, mitigation and management measures
Activities Description
Subsea presence at formal project Risk Identification and Assessment Workshop Input into the Risk Register, as required
Input to Risk reduction and mitigation report as required
Input Requirements
Output / Deliverables
Subsea input to Risk Identification Report
Subsea input to Risk Register
Subsea input to possible risk reduction measures and management of risk
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
1090 IVB Interface and Support Rev :
Author :
Objective
To provide an interface with COMPANY’s IVB
To provide technical support in response to COMPANY’s IVB queries/comments
Activities Description
Provide a technical interface with COMPANY’s IVB during the FEED process Provide technical responses to COMPANY’s IVB queries, reviews and comments
Input Requirements
Queries and comments received from COMPANY’s IVB
Output / Deliverables
General discussion with COMPANY’s IVB
Formal responses to COMPANY’s IVB queries/comments
IVB Approval of Subsea FEED Deliverables
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
2010 Basis of Design Rev :
Author :
Objective
To assist with updating of the project Basis of Design
Activities Description
Provision of subsea data and change of data as required as the FEED progresses
Input Requirements
Output / Deliverables
Basis of Design updates
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
2020 Project Philosophies Rev :
Author :
Objective
To assist with the development of system design and operation philosophies for the project
Activities Description
Provision of subsea input into the various philosophies to be developed as part of the overall FEED
Input Requirements
Fishing Intensity Studies (if available or relevant)
Basis of Design All party workshops
Output / Deliverables
Operations Philosophy
Materials Selection Philosophy Corrosion Mitigation Philosophy
Chemical Injection Philosophy Metering Philosophy
Pigging Philosophy
Protection Philosophy
Installation Philosophy
Pre-commissioning/Commissioning Philosophy
Inspection, Maintenance and Repair (IMR) Philosophy
Future Tie-In Philosophy
Notes, Assumptions, etc
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
2030 Interface Engineering Rev :
Author :
Objective
To establish subsea interfaces with other FEED disciplines (process, marine, etc.)
Activities Description
Establish areas where subsea equipment and facilities interface with other aspects of the project, for example, the FPSO,
process equipment and requirements, etc., and define the nature of the interface. Develop an interface Register defining responsibilities for the interface and data required.
Manage the interfaces through FEED to ensure that up-to-date information is included in the design.
Input Requirements
Review meetings with FPSO Design Team
Attendance at all-party workshops Attendance at Drilling Interface Management meetings
Output / Deliverables
Interface Register Interface Definition Sheets
Notes, Assumptions, etc
COMPANY’s FPSO contractor is likely to be located in the Far East The interface between Subsea and the FPSO Topsides is very significant, and the subsea FEED contractor and the FPSO
Design Team will need to be aware of this. In particular, the interface applies to CTR Nos. 1050, 2040, 2060, 4010,
4020F to 3020 H, 4020 M, 4060, 4110, 4120, 5110 and 6030
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
2040 Future Expansion Rev :
Author :
Objective
To establish the options for future expansion of the development and quantify level of pre-investment.
Activities Description
Investigate the options available for the subsea architecture for future tie-in of wells.
Define potential requirement for new wells and quantify level of pre-investment recommended
Input Requirements
Client sub-surface team
Output / Deliverables
List of pre-investment CAPEX
Input to Future Tie-Back Philosophy (CTR 2020)
Pre-investment included in cost estimate
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
2050 Materials Philosophy Rev :
Author :
Objective
To develop materials selection philosophy for the subsea production system, including manifolds, flowlines and risers.
To develop a Corrosion Management System Specification
Activities Description
Definition of potential materials for use within the subsea architecture selected for the development
Demonstration that the materials recommended will be compatible with those of adjacent components and foreseen operating conditions, and will comply with the system requirements as a whole.
Development of an overall Corrosion Management Specification for the subsea system
Input Requirements
Basis of Design
Output / Deliverables
Input to Materials Philosophy document (CTR 2020)
Subsea Corrosion Management System Specification
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
2060 System Definition and Optimisation Rev :
Author :
Objective
To define the subsea system for the development as a basis for the remaining phases of FEED.
Activities Description
Development of preliminary system schematics (first draft P&IDs and field layout drawings), showing all main elements
of the subsea system, manifolds, flowlines risers, piping, valves, instruments, etc. Undertake a peer driven constructability/operability workshop, reviewing the arrangements from installation, operation
and maintenance viewpoints. Issue field architecture GA drawings and schematics as a basis for the remaining phases of FEED.
Input Requirements
Concept selection documentation and drawings.
Output / Deliverables
Preliminary subsea system P&IDs
Field Layout drawings
Development schematics
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
3010 Subsea Structure Piping Design Rev :
Author :
Objective
To develop preliminary designs for manifold and riser base (if required) pipework
Activities Description
Development of piping and equipment layouts for the subsea manifolds, PLETs and riser bases (if required), to include:
- All pipework required - Tie-in arrangements
- Remote connector type(s) - Valve requirements, actuation methods and interfaces for ROV intervention
- Controls instrumentation - Testing and commissioning requirements
From layouts, the development of a piping MTO and weight estimate for each structure as required.
Input Requirements
System definition and P&IDs
System philosophies
Output / Deliverables
2D and 3D CAD drawings
Piping MTOs for all structures
Piping weight estimates for all structures
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
3020 Subsea Structures Structural Design Rev :
Author :
Objective
To develop structural designs for manifolds, PLETs and riser bases (if required)
Activities Description
Development of manifold, PLET and riser base (if required) structural layouts, to meet the following criteria:
- Support and protection of the manifold/riser base piping and equipment - Any protection requirements
- Potential foundations design - Deployment and installation requirements
- ROV access to operate/override valves - ROV access to recover/change out key components
From the structural layouts developed, structural steel MTOs and weight estimates will be established for each structure.
Input Requirements
System definition and preliminary P&IDs
System philosophies
Output / Deliverables
2D and 3D CAD drawings
Piping MTOs
Piping weight estimates
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
3030 Subsea Structures Foundations Design Rev :
Author :
Objective
To define the most suitable foundation system for the manifold, PLET and riser base (if required) structures.
Activities Description
Development of foundations designs for the subsea structures, including:
- Agree seabed soils data for the preliminary design - Select optimum foundations system (piles, suction piles, gravity base, etc.)
- Potential foundations design - Foundations deployment and installation requirements (if applicable)
- ROV access From the above develop a structural steel MTO and weight estimates for the foundations for each structure.
Input Requirements
Seabed soils information (desktop study or survey information)
Manifold structural and piping designs/layouts
Output / Deliverables
Drawings
Technical note on foundations design for all structures
Foundations MTO and weight estimates for all structures
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4010 Flowline Route Selection Rev :
Author :
Objective
To select routes for the infield flowlines required for the development.
Activities Description
A flowline routing study will be performed based on the available data. The routing study will take into consideration the
approaches at the FPSO and manifold ends of the flowlines as well as any known seabed features that will require routing around. In general, however, the shortest route possible will be selected.
The flowline routes will be used as a basis for the scope of work for the engineering route survey, will be used as the basis of Field Layout drawings and will provide input to the flow assurance studies (CTR 4020).
Flowline routing shall also take into account pipeline stability, the potential to ‘walk’ over steep inclines, etc, and avoid these as necessary
Input Requirements
Admiralty Chart(s) of he DWT area
Any Client supplied information on the area
Output / Deliverables
Route Alignment Sheets
Technical note on route selection
Input to Scope of Work for engineering survey
Input to flow assurance studies
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020A Flow Assurance; Fluids Characterisation Rev :
Author :
Objective
To undertake further fluids characterisation studies based on clean DST fluid samples
Activities Description
Analysis of available laboratory report data and selection of fluids for characterisation
Specification of fluid characterisation procedure Characterisation of fluids
Input Requirements
Fluid analysis reports
Output / Deliverables
Update of fluid characterisation study report
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020B Flow Assurance; Flow Assurance Simulation Basis Rev :
Author :
Objective
To develop a flow assurance simulation basis
Activities Description
Review of steady state and dynamic flow assurance work undertaken in pre-FEED
Specification of data requirements Collation of Data
Identify further data requirements Detail any assumptions made
Input Requirements
Existing available data
Output / Deliverables
Flow Assurance Simulation Basis Report
Agreement with COMPANY as to the simulation basis
Notes, Assumptions, etc
Note: there will be some uncertainty in design. Additional exploration and appraisal drilling in Q2 2011 will provide more data which may require/cause updates to some of the design cases, and then pre-FEED steady state and dynamic flow
assurance work may require reworking.
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020C Flow Assurance; Steady State Analysis of Further Field
Extension
Rev :
Author :
Objective
To complete steady state PIPESIM analysis in the event that the current full field development is expanded.
Activities Description
Review of pre-FEED steady state analysis
Construction of appropriate PIPESIM models Undertaking the required simulation runs
Results analysis Production of steady state report
Input Requirements
Existing available data
Output / Deliverables
Extended Steady State Simulation Report
Notes, Assumptions, etc
Note: there will be some uncertainty in design. Additional exploration and appraisal drilling in Q2 2011 will provide more
data which may require/cause updates to some of the design cases, and then pre-FEED steady state and dynamic flow
assurance work may require reworking
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020D Flow Assurance; Steady State Life of Field Analysis Rev :
Author :
Objective
To complete steady state PIPESIM analysis to confirm system performance through field life
Activities Description
Review of pre-FEED steady state analysis
Construction of appropriate PIPESIM models Development of fluid compositions
Undertaking the required simulation runs Results analysis
Production of Life of Field Report
Input Requirements
Agreed production rates at various stages through field life Assessment of water cut and gas leaning sensitivities – define appropriate fluids sensitivities
Output / Deliverables
Confirmation of line sizing, thermal insulation, etc.
Steady State Life of Field Report
Notes, Assumptions, etc
Note: there will be some uncertainty in design. Additional exploration and appraisal drilling in Q2 2011 will provide more data which may require/cause updates to some of the design cases, and then pre-FEED steady state and dynamic flow
assurance work may require reworking
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
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Name: …………………………….
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CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020E Flow Assurance; Provision of Data for Life of Field
Corrosion Analysis
Rev :
Author :
Objective
To provide data for the analysis of corrosion over life of field
Activities Description
Review of pre-FEED steady state analysis
Extract appropriate data from the steady state life of field analysis to support life of field corrosion assessment (temperature, pressure, density and superficial velocity profiles)
Production of Report
Input Requirements
Agreed production rates at various stages through field life Assessment of water cut and gas leaning sensitivities – define appropriate fluids sensitivities
Output / Deliverables
Report
Notes, Assumptions, etc
Note: there will be some uncertainty in design. Additional exploration and appraisal drilling in Q2 2011 will provide more
data which may require/cause updates to some of the design cases, and then pre-FEED steady state and dynamic flow
assurance work may require reworking
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
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Name: …………………………….
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Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020F Flow Assurance; OLGA Model Construction and Review Rev :
Author :
Objective
To design, construct, review and approve an OLGA model of the DWT system to allow accurate dynamic and transient
analysis
Activities Description
Review of pre-FEED dynamic flow assurance analysis Design and construct (or update existing model) an OLGA model of the system
Review the OLGA model
Input Requirements
Agreed subsea architecture Agreed well designs
Output / Deliverables
Construction of a suitable OLGA model
Approval of model for use
Notes, Assumptions, etc
Note: there will be some uncertainty in design. Additional exploration and appraisal drilling in Q2 2011 will provide more
data which may require/cause updates to some of the design cases, and then pre-FEED steady state and dynamic flow
assurance work may require reworking
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
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CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020G Flow Assurance; Transient Operability and Design
Assessment
Rev :
Author :
Objective
To perform dynamic and transient analysis of the system to confirm its satisfactory operation
Activities Description
Specification of operating philosophies and sensitivities Definition of case matrices
Using OLGA model, investigate the following: Unstable flow and minimum hydraulic turndown; Artificial lift performance
(if required); Shutdown; Pipeline pressurisation (line packing); Settle out; Cooldown (no touch) and minimum thermal
turndown; Ramp up; Ramp down; Sphering and benefits of operational pigging; De-pressurisation; Well restart to
depressurised, pressurised and flowing systems; First gas start up; Typical start-up
Analysis of results
Final report
Input Requirements
Operations philosophy
Sensitivities
Output / Deliverables
Report of Transient Operability and Design Assessment
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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CTR FORM
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Agreed By : Approved By :
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CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020H Flow Assurance; Slugging Analysis Rev :
Author :
Objective
To provide data on potential slug sizes for various potential riser sizes in various flow scenarios
Working in conjunction with the FPSO Design Team, determine the best compromise in terms of FPSO topsides capacity for managing slugs versus flowline size and wellhead back-pressures later in field life.
Activities Description
Extract liquid surge profiles from the OLGA runs of ramp up and pigging (if applicable) strategies. This is an iterative
process.
Data presentation in report form
Input Requirements
Appropriate OLGA runs
Output / Deliverables
Final Report of Support Data for Slug sizes and recommendations for topsides equipment that is consistent with the FPSO Design Team conclusions.
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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CTR FORM
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Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
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CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020I Flow Assurance; Data to Support Flowline Design Rev :
Author :
Objective
In conjunction with CTRs 4040/J and 4020 K, to provide data in support of flowline design
Activities Description
Extract data from appropriate steady state and dynamic runs in support of flowline design, including, but not limited to: maximum and minimum steady state and transient wall temperatures; Operating pressure ranges; Full shut-in conditions
for each system
Data presentation in report form
Input Requirements
Appropriate PIPESIM and OLGA runs
Output / Deliverables
In conjunction with CTRs 4040/J and 4020 K, Report of Support Data for Flowline Design
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
CTR FORM
COST TIME & RESOURCE
Name: …………………………….
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Name: …………………………….
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CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020J Flow Assurance; Hydrate and Wax Management Studies Rev :
Author :
Objective
In conjunction with CTRs 4040/J and 4020 K, to specify and confirm hydrate and wax management strategies,
particularly under transient conditions
Activities Description
Additional OLGA runs as required to consider refined blowdown and liquids displacement strategies
Additional OLGA runs to track hydrate inhibition during restart and wax deposition
Data presentation in report form
Input Requirements
Appropriate PIPESIM and OLGA runs
Output / Deliverables
In conjunction with CTRs 4040/J and 4020 K, Report of recommended hydrate and wax management strategies for the
development
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020K Flow Assurance; Hydrate Remediation Assessment Rev :
Author :
Objective
In conjunction with CTRs 4040/J and 4020 K, to size the venting system (if provided) for de-pressurisation on either side
of a hydrate blockage, and to develop an operating strategy for the system
Activities Description
Identification of cases for assessment
Construction of OLGA model(s)
OLGA runs
Results analysis
Case Refinement and report on hydrate remediation
Input Requirements
Appropriate PIPESIM and OLGA runs
Output / Deliverables
In conjunction with CTRs 4040/J and 4020 K, Report of recommended hydrate remediation strategy
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020L Flow Assurance; Chemical Core and Distribution Sizing Rev :
Author :
Objective
To confirm sizing of chemical injection cores in the subsea umbilicals and design of any subsea chemicals distribution
network
Activities Description
Construction of appropriate PIPESIM models
Development of fluid compositions
PIPESIM runs
Analysis of results
Report covering above work
Input Requirements
N/A
Output / Deliverables
Report on chemical injection system
Input data for the specifications for subsea umbilicals and umbilical risers
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4020M Flow Assurance; System Finalisation Rev :
Author :
Objective
To confirm system performance on completion of design activities
Activities Description
Finalised set of OLGA runs, simulating finalised chemical inhibition dosing and agreed flowline operating strategies. Runs will be required for: Steady state; ramp up; Ramp down; Pigging; Shutdown, settle out and cooldown; Pipeline
pressurisation; De-pressurisation; First gas and typical start up; Well restart; Hydrate remediation
Analysis of results
Report covering above work
Input Requirements
System design and operating philosophies
Output / Deliverables
Report on finalised system analysis
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4030 Flowline Mechanical Design Rev :
Author :
Objective
To undertake flowline mechanical design
Activities Description
Mechanical design of the infield flowlines will be undertaken using verified software to confirm the following:
- Wall thickness - On-bottom stability
- External coating definition - CP requirements
- Anode design and attachment - Upheaval buckling analysis
- Trenching assessment (insulation)
Design shall be sufficient to allow procurement of linepipe in this phase of the development, if required.
Input Requirements
Preliminary flowline sizing (CTR 4020)
Basis of Design
Output / Deliverables
Flowline Mechanical Design Reports for infield flowlines Drawings as appropriate
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4040 Flowline Coating Design Rev :
Author :
Objective
To define optimum external coating system(s) for the flowlines
Activities Description
Selection of the external coating system(s) for flowlines will be undertaken taking into account:
- Anti-corrosion - Stability
- Insulation requirements
Input Requirements
Flowline mechanical design (CTR 4030) Flow Assurance studies (CTR 4020)
Output / Deliverables
Flowline Coating Selection Technical Report
Insulation Coating Selection Technical Note
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4050 Flowline and Well Tie-Ins Rev :
Author :
Objective
To define systems for flowline and well tie-ins.
Activities Description
Survey available subsea remote flowline connection systems and select most appropriate for DWT development
Undertake system design for tie-ins between - Flowlines and manifolds
- Wells and manifold - Flowlines and riser bases (if required)
The stress analysis work for the spool tie-in design shall be based on a likely envelope, and the spool design shall be adequate to accommodate the potential locations for trees, manifolds and PLETs within that envelope
Input Requirements
Basis of Design
Output / Deliverables
Subsea Remote Connection Systems Review Technical Note
Recommended remote connection system
Drawings of potential layouts for well tie-ins and for flowline tie-ins, including preliminary jumper/spoolpiece design.
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4060 Pigging Design Rev :
Author :
Objective
To design aspects of the flowline system to suit pre-commissioning and operational pigging requirements.
Activities Description
From the established pigging philosophy
- Ensure that piping design for the manifolds facilitates the installation, use and retrieval of a temporary subsea
PLR for all headers
- Ensure that all tie-in spoolpiece designs are suitable for the safe passage of all types of pig envisaged for use in
pre-commissioning and operational requirements - Ensure that all other aspects of the subsea flowline systems are suitable for envisaged pigging operations
- Interface with FPSO design to ensure that topsides PLR can be installed for pigging operations envisaged
Input Requirements
Basis of Design (CTR 2010)
Pigging Philosophy (CTR 2020)
Output / Deliverables
Pigging Operations Technical Note
Preliminary pigging procedures Specification for subsea PLR
Input to design drawings of flowline system components
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
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Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4110 Riser System Selection Rev :
Author :
Objective
To define the optimal configuration for the DWT riser system
Activities Description
Survey available deep water riser systems, establish pros and cons for each system and select most appropriate system
for the DWT development on both technical and economic bases. Riser systems evaluated will include: - Flexible Risers
- Steel Catenary Risers - Multi-bore Hybrid risers
- Single Offset Hybrid Risers - Concentric Offset Hybrid Risers
Input Requirements
Basis of Design
Flow Assurance studies
Field Layout
Operations philosophy
Output / Deliverables
Deep Water Riser Systems Review Technical Note
Recommended riser system
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
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CTR FORM
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Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
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Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
4120 Riser System Design Rev :
Author :
Objective
Design of the DWT riser system
Activities Description
Based on an appropriate riser system selection, the following design analysis work will be undertaken to define the riser
system - Configuration design, interfacing with the FPSO contractor for details on FPSO size, layout and RAOs.
- Stress analysis of the risers under expected loads induced by the expected FPSO motions, Metocean conditions and operational conditions.
- Anchor requirements at base of risers (to isolate the flowlines and/or to maintain configuration and limit transverse motions).
- Wall thickness definition.
- Preliminary fatigue analysis, including effects of VIV.
- Effects of insulation, if required.
- Flex-joint definition, if required
- Top end motions
Input Requirements
Basis of Design
FPSO layout/RAOs, etc.
Flow Assurance studies
Output / Deliverables
Preliminary Riser Design Report
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
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CTR FORM
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Agreed By : Approved By :
Name: …………………………….
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Name: …………………………….
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Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
5010 Chemical Injection Review and System Definition Rev :
Author :
Objective
Definition of the subsea components of the DWT chemical injection system
Activities Description
Review with process engineers the requirements for chemical injection into the DWT system, and the optimum locations
for such injection (e.g. at trees, flowlines or at manifolds, or combinations). Review possible methods for achieving the chemical injection required, i.e. subsea distribution, etc.
Input into manifold system design and system P&IDs
Input Requirements
Basis of Design Process studies
Flow Assurance studies
Output / Deliverables
Information for use in the subsea control system and umbilical studies
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
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Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
5110 Subsea Control System (SCS) Definition Rev :
Author :
Objective
Review and definition of the SCS
Activities Description
The subsea control system for the DWT development will be a multiplexed electrohydraulic system.
The DWT system philosophies (e.g. operations, availability, reliability, sparing, etc.) will be reviewed to assess the required performance criteria for the SCS.
The key components of the SCS will be reviewed and defined Review any new technology that may enhance the SCS or reduce its cost.
Develop a functional design specification for the SCS that will allow procurement to commence on completion of the FEED
phase of the project.
Input Requirements
Basis of Design
Field layout
P&IDs
Chemical Injection report
Output / Deliverables
Subsea Control System Preliminary Design Report
SCS Functional Design Specification
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
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Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
5210 Subsea Umbilical and Umbilical Riser Definition Rev :
Author :
Objective
Review and define requirements for the subsea umbilicals and umbilical riser(s)
Activities Description
Umbilical risers and seabed umbilicals will be required for subsea control, communications and chemical injection supplies to manifolds and trees.
Review and define requirements for: - Electrical power transmission
- Electrical or fibre optic signal transmission - Hydraulic fluid supplies (HP and LP)
- Injection chemical supplies
Compare the use of thermoplastic hose with steel tube cores to supply hydraulic fluids and chemicals for injection.
Consider construction with copper core cables for signal transmission or the use of fibre optic cores.
In collaboration with umbilical supplier(s):
- Establish optimum construction for the seabed umbilicals, complete with proposed cross section.
- Establish optimum construction for the dynamic umbilical risers, complete with proposed cross section, and also
the transition design between dynamic and seabed umbilicals.
- Determine any anchoring/buoyancy requirements for the dynamic umbilical riser section.
- Consider reducing the number of umbilical risers with distribution subsea.
Review any new technology that may enhance the umbilical system or reduce its cost.
Input Requirements
Basis of Design Field layout
P&IDs
Flow assurance studies (CTR 4020/L)
Chemical Injection report
SCS Definition
Output / Deliverables
Subsea Umbilical and Umbilical Riser Preliminary Design Report Umbilical and Umbilical Riser Specification
Umbilical and Umbilical Riser Data Sheets
Notes, Assumptions, etc
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
5310 Review of Multiphase Flowmeter Systems Rev :
Author :
Objective
Review and recommend subsea multiphase flowmeter systems.
Activities Description
Gather and collate data on each of the subsea multiphase flowmeter types available, and review their accuracy, reliability
and cost (CAPEX and OPEX), making technical contact with suppliers as required. Establish track record of use in each case.
Investigate and compare on technical and cost grounds the options to supply a meter and flow control valves at the manifold or to provide a meter per well.
Produce a Specification and data sheet for the recommended multiphase flowmeter
Input Requirements
Metering philosophy
Operating philosophy
Vendor information packs
Chemical Injection report
Output / Deliverables
Subsea Multiphase Flowmeter Review Technical Note Subsea Multiphase Flowmeter Specification
Subsea Multiphase Flowmeter Data Sheet
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
5320 Review of Sand Detection Systems Rev :
Author :
Objective
Review and recommend subsea sand detection systems.
Activities Description
Gather and collate data on the sand detection systems available (both intrusive and non-intrusive to the production
system). Review and compare the systems, their accuracy, reliability and cost (CAPEX and OPEX), making technical contact with suppliers as required, and make recommendations for the DWT project.
Develop specification and data sheet for the recommended sand detection system
Input Requirements
Basis of Design Operating philosophy
Vendor information packs
Output / Deliverables
Sand Detection Systems Review Technical Note
Sand Detector System Specification
Sand Detection System Data Sheet
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
6010 Survey Specification and Scope of Work Rev :
Author :
Objective
To provide a Specification and Scope of Work for engineering survey of the DWT seabed for detailed design purposes.
Activities Description
For detailed design of the DWT subsea facilities to proceed it will be necessary to provide data as to the nature of the
seabed in the area to allow various engineering and design tasks to proceed. The survey specification shall include, but not be limited to:
- Applicable codes and standards - Mobilisation and acceptance trials
- Survey vessel requirements
- Survey equipment requirements
- Sampling and in-situ testing requirements
- Data collection and on-board processing
- Interpretation and charting
- Reporting and Documentation requirements
The survey scope of work will include, but may not be limited to, the following:
- Route survey for each infield flowline and umbilical corridor, specifying corridor route, expected termination
locations, survey width and number of passes, PCT test requirements and separation, etc.
- Boreholes to establish details of soils and soils strength for locations where seabed structures will be required,
i.e. the three manifold locations, any location where there may be a riser base or riser anchor.
- Requirements for survey for the FPSO will also be included from the FPSO contractor.
Input Requirements
Field layouts Expected locations for subsea structures and FPSO
Preliminary flowline routes
Output / Deliverables
Survey Specification
Survey Scope of Work Survey Corridor Drawings
Notes, Assumptions, etc
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
6020 Subsea System Functional Design Specification Rev :
Author :
Objective
To prepare a Functional Design Specification for the DWT subsea system
Activities Description
The purpose of the document will be to summarise all functional requirements for the subsea facilities based on the FEED
work completed, and to compliment the BOD. Cross reference will be made within this document to other key reports and specifications generated by the FEED study.
Input Requirements
BOD
Project philosophies Field layout drawings
Subsea P&IDs
Output / Deliverables
Subsea System Functional Design Specification
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
6030 Flowline and Flowline Related Procurement, Fabrication
and Installation Specifications
Rev :
Author :
Objective
To prepare a full suite of specifications for procurement, fabrication and installation of the subsea flowline and related
facilities for inclusion in the ITT for the next phase of the project.
Activities Description
Prepare Specifications covering the procurement, fabrication and installation of subsea flowlines and flowlines related equipment
Input Requirements
BOD
Project philosophies Field layout drawings
Subsea P&IDs
Materials selection
Etc.
Output / Deliverables
Specifications covering Procurement, Fabrication and Installation of the Subsea FlowlineFacilities
Notes, Assumptions, etc
Specifications for the flowlines and flowline related equipment required have been listed in the Scope of Work for the Subsea FEED. Depending on the FEED outcome, these may vary. Certain specifications are covered under specific
equipment CTRs.
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
6040 Subsea Structures and Structure Related Procurement ,
Fabrication and Installation Specifications
Rev :
Author :
Objective
To prepare functional specifications for the subsea manifolds, PLETs and riser bases (if required) for tenderers for the
next phase of the project
Activities Description
Prepare Specifications covering the procurement, fabrication and installation of subsea manifolds, PLETs and riser bases (if required) and any structure related related equipment
Input Requirements
BOD
Project philosophies Subsea P&IDs
Manifold 2D and 3D drawings
Pipework schematics
MTOs
Output / Deliverables
Manifold Design Specification
Notes, Assumptions, etc
Specifications for the subsea structures and structure related equipment required have been listed in the Scope of Work for the Subsea FEED. The functional specification for the manifold(s), PLETs and riser bases (if required) will be prepared
in conjunction with the 2D and 3D CAD drawings, the MTOs and pipework schematics developed in FEED. Certain Specifications (e.g. structure fabrication) will cover all structures.
CTR FORM
COST TIME & RESOURCE
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
6110 Scopes of Work for EPC/EPIC/Installation Contracts Rev :
Author :
Objective
To provide assistance as necessary to determine a contracting strategy for the next phase of the project.
To prepare Scopes of Work for the enquiry packages for the contracts to be let for the next phase of the work.
Activities Description
Assistance will be provided as necessary to develop a contracting strategy for the project, for example, EPC, EPIC, EPCIC or installation.
As a result of the decision on contracting strategy, Scopes of Work will be developed for each of the contracts that will be tendered. These Scopes of Work will be taken forward, together with other technical deliverables developed during FEED,
into The ITT packages.
Input Requirements
Contracting strategy Subsea system architecture details
Output / Deliverables
Scopes of Work for ITT packages
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
7010 Subsea Support to HSE - General Rev :
Author :
Objective
Subsea contributions to project HSE in general
Activities Description
Assistance will be provided as necessary for the following:
- Contractual obligations for HSE - Safety Engineering Design Philosophy
- Project HSE Plan - Project Safety Register
- Development and Upkeep of Safety Action Management System (SAMS)
Input Requirements
Output / Deliverables
Report on HSE obligations Philosophy documents
Project HSE Plan
Project Safety Register
SAMS
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
7020 Safety Engineering Rev :
Author :
Objective
Subsea contributions to project safety engineering tasks
Activities Description
Assistance/attendance will be provided as necessary for the following:
- Formal HAZID Workshop - Formal HAZOP Workshop
- Loss control design - Hazardous material inventory
-
Input Requirements
Output / Deliverables
HAZID Report
HAZOP Report
HAZOP Action List Responses
Design Report
Hazardous Materials List
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
PROJECT : DWT Subsea FEED CONTRACT No.: WORK ORDER Nr. :
CONTRACTOR:
CUSTOMER : Tullow Ghana Limited
Planned Start: Planned Finish : Duration :
CTR/Activity No : Title : Date :
7030 Environmental Engineering Rev :
Author :
Objective
Subsea contributions to project environmental engineering tasks
Activities Description
Assistance/attendance will be provided as necessary for the following:
- Environmental studies - Formal ENVID Workshop
- Environmental protection philosophy - Environmental emissions and discharges estimations and database
Input Requirements
Output / Deliverables
Environmental study technical note
ENVID report
Philosophy document
Emissions/Discharges database
Notes, Assumptions, etc
Prepared By (Lead): Checked By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….
CTR FORM
COST TIME & RESOURCE
Agreed By : Approved By :
Name: …………………………….
Signature: ……………………………………..
Date: ………………………….
Name: …………………………….
Signature: ………………………….………..
Date: ………………………….