www.gl-nobledenton.com

MFP – Installation using a Jack up Rig

Dr. Sanjaya Pillai, Business Head, GLND India, Aswathy Ezhampakkel, Sr. Naval Architect, GLND Qatar

History

• October 2006: NDC started operations in Mumbai by opening a project office to execute 4WPP & BCPB2 projects

• 1st April 2008: Noble Denton India Pvt Ltd established

• January 2009: ISO 9001 certification awarded to Noble Denton India Pvt Ltd

• April 2009 GL acquired Noble Denton

• April 2008-May 2012: NDI executed many warranty projects.

GL Group Business Streams

• GL NOBLE DENTON (OIL and GAS)

• Advanced Engineering and Consulting

• Marine Operations and Consulting

• Technical Assurance

• Design and Execution

• GL MARINE (CLASS)

• Classification Society

• GL GARRAD HASSAN (RENEWABLES)

• Renewables

MFPs -Definition

BACKGROUND

1. Production wells on the verge of depletion, Additional wells can be drilled in the

near vicinity if some marginal fields are available near the existing facilities.

2. Existing no. of Production wells is not sufficient to take care of increased flow.

Additional wells needed for tapping the resources.

3. Marginal fields exploitation, Minimum facilities for feasibility considering other factors

like cost, grouping of fields etc.

4. Concept of Minimum Facilities Platforms

MFP - Installation

INSTALLATION PERSPECTIVES

1. Risk during Load-Out, Transportation and Installation

2. Reconsideration of Design Parameters

3. Safety during Installation

4. Size and Weight of the Structure Involved

5. Installation Methodology - innovative

6. Identify Marine Procedures

7. Reasonable risk from Owners/Underwriter’s points of view

Installation – A Case Study

INSTALLATION of MFP – A Case Study

1. Operator – Middle East

2. Feasibility Study for Installation with a Rig

3. Additional wells needed for accommodating increased oil flow => adjacent additional

platform with Minimum Facilities proposed

4. Input from various contractors taken during feasibility study

5. Feasibility Study confirmed after thorough evaluation of feasibility of Installation

6. GLND developed Installation Procedures and Marine Procedures

Installation – A Case Study

INSTALLATION of MFP – A Case Study - Design considerations

1. Deciding parameters

a. Rig Capacity of Lift

b. Rig Reach of Lift

2. Safety of Existing Platform

a. Installation Methods

b. Risk Assessment and Mitigation

Installation – A Case Study

INSTALLATION of MFP – A Case Study - Steps

1. Position the Rig near to the existing platform

2. Cantilever extended, Install Pin pile

3. Template loaded, sea-fastened and arrives at the location

4. Template Lift with Rig, Lowered and Placed on the Bottom

5. Install Legs(Conductors)/ Work Platforms

6. Topside Lift after Rigging inspection

7. Final adjustment using tugger winches

8. Positioning Levelling and welding the Topside on the legs

MFP – Installation Perspectives

Step #1, #2

Position the

Rig near to the

existing

platform,

Cantilever

extended,

Install Pin pile

Outreach -45’

Port/Sbd- 14.5’

MFP – Installation Perspectives

Step #3

Template

loaded, sea-

fastened and

arrives at the

location

No welding to

the deck

(timber)

MFP – Installation Perspectives

Step #4

Template Lift

with Rig,

Lowered and

Placed on the

Bottom

Mooring:

Bow -1

Stern - 2

MFP – Installation Perspectives

Step #5

Install all

other Legs/

Work

Platforms

Cutting at the

desired

elevation

MFP – Installation Perspectives

Step #6

Topside Lift

after Rigging

inspection

Crash rail

Air gap

MFP – Installation Perspectives

Step #7

Final

adjustment

using tugger

winches

Positioning is a

delicate job

MFP – Installation Perspectives

Step #8

Positioning,

Levelling and

welding the

Topside on the

legs

Installation – A Case Study

INSTALLATION of MFP – A Case Study - Issues

1. Rig Limitations – DAF to be considered

2. Weather during Installation – very important

3. Positioning of the Rig – rig move and soil assessment

4. Placing of the Topside simultaneously on conductors/legs

5. Tugger Line and Lifting Gear – to be designed

6. Leveling of the Platform – suit to site

Installation – A Case Study

SUMMARY

1. Design Parameters - Reconsideration

2. Risk Assessment and Risk Mitigation

3. Installation Methodology – Innovation

4. Custom made procedures/design

For further information visit www.gl-nobledenton.com

Thank you for your attention!