SURVEY SERVICES

Leading the way in survey and positioningProserv Survey Services provides comprehensive survey services to the offshore construction industry, tailored to meet the needs of our clients. We supply a range of survey capabilities from onshore bid support and project planning through offshore execution to supply of final survey and positioning documentation and data. Whether our client is looking for one surveyor for a basic positioning requirement, or a whole team and equipment to conduct high specification pipeline surveys, no project is too big; no job is too small.

Survey Services is a key part of our wider subsea services portfolio. We provide a broad range of standard and bespoke technology and service solutions for even the most challenging projects over the life of a subsea field. Our Survey Services can therefore be provided as a standalone option, or integrated into larger dredging, cutting and decommissioning, or renewables projects.

OUR SURVEY CAPABILITIES INCLUDE• Survey consultancy and vessel build support services• Provision of offshore personnel to support survey projects• Onshore planning and project management of survey and

positioning activities• Vessel mobilisation and survey sensor calibrations• Execution of a wide range of survey and positioning

offshore scopes• Delivery of final documentation, data processing and

management of client data• Supply of personnel and/or equipment as part of

customer’s survey capability• Long baseline (LBL) array planning TYPICAL PROJECT TYPES• ROV based seabed survey and mapping• Structure installation and positioning• Pipeline and umbilical installation support and surveys• Pipeline inspection• Spool piece metrology• Trenching and dredging survey support• Surface and subsea positioning support• Rental of third party survey equipment• Deep water acoustic positioning• Positioning support to heavy lift operators• Renewables and decommissioning seabed survey

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SURVEY SERVICES

Proserv Survey Services division provides the focus and attention to detail of a small company with the supporting resources, organisational structure and geographical spread of a large company. This is closely aligned with the wider Proserv vision to be the biggest small company in the energy services sector.

We operate globally, with office locations in 11 countries across Europe, America, Asia Pacific, Middle East and Africa. Proserv has completed survey projects in the North Sea, Gulf of Mexico, Brazil and West Africa.

A comprehensive quality service, no matter the project size

Proserv’s survey and positioning services supports life of field operations from drilling to production to decommissioning. Whether you require survey support pre-engineering seabed surveys, structural and pipeline inspections, heavy lifts or umbilical installation, we have the people, equipment and experience to ensure complete project delivery.

Our completed project water depths have ranged from 15 metres to 3,000 metres. We completely understand the impact water depth has on project planning and equipment selection and will adapt our survey methodology to suit each project accordingly. We also have the expertise to operate the complex systems required to survey and position accurately at great depth.

Proserv owns a large volume of survey equipment, which makes up the majority of equipment needed to support customer’s operations. Based on each project’s requirements, we will source and mobilise any remaining project specific equipment from our selected range of high quality rental partners.

We also own and operate a four antennae JAVAD DGNSS system for performing dynamic three axis vessel sensor calibrations.

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Proserv Owned Equipment• NASNet® LBL systems

• Veripos DGNSS hardware

• Survey grade heading and motion sensors

• Navigation and acquisition PC and timestamping hardware

• Data processing, reporting and smart remote PCs

• Online, offline and charting software

• Sound velocity probes

• Video and data telemetry systems

• HiPAP compatible ultra short baseline (USBL) transponders and testers

• Visualsoft video encoding, storage and backup systems

Software

• EIVA suite including NaviPac, NaviScan, NaviEdit, NaviModel and S-CAN for online navigation and data processing

• Visualsoft suite for digital video recording, event processing and post-processing

• WISH Autochart with AutoCAD Map 3D for charting

• ESRI ARCGIS for data management and digital presentation

• Other software used include Blue Marble Geographic Calculator, Geoline 3D, Polpred, and Total Tide

• Fusion LBL

100INS provides 100 position updates per second

3 When using INS, better than 3 x improvement in positioning stability

4NASNet® stations can be used continuously for up to 4 years without maintenance

5Typically 5 x less NASNet® stations required than conventional transponders

SUBSEA POSITIONING SERVICES

When is comes to positioning, we ensure that our staff are experts in the majority of USBL and LBL subsurface positioning systems commonly used in the offshore construction industry, including Kongsberg, Sonardyne and Proserv’s own NASNet® LBL positioning system. No matter what the positioning requirement is, we will make sure we use the best system for the job.

The best positioning systems for the right job

With a long standing heritage in the manufacture and operation of a range of acoustic positioning systems it’s no surprise that our understanding and competence in subsea positioning is second to none.

The Proserv NASNet® long baseline (LBL) acoustic system is a recognised and proven high quality deep-water positioning system, providing the only true multi-user subsea positioning capability. Providing sub-metre accuracy in all water depths, as well as fast position updates, the system is best known for its extreme long range capability, providing cost effective positioning over large areas. The system is available either as an integrated offering with Proserv Survey Services, or as an independent positioning system.

Our survey personnel are equally capable and experienced in using the range of USBL and LBL systems available from other manufacturers such as Sonardyne and Kongsberg, and we’ll always use the system that’s right for our customer and their project requirement. We also possess significant experience in combining Inertial Navigation Systems (INS) and a range of acoustic systems to optimise the quality of ROV positioning in all water depths.

Planning brings success, and for LBL applications we plan and analyse seabed arrays making use of the Geoline3D software, co-developed by Proserv. This advanced package uses 3D seabed terrain data and environmental data to allow arrays to be fully assessed for positioning coverage and geometry, ensuring efficient and effective offshore positioning every time.

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1One team - one of Proserv’s key values internally and externally

100%100% operational performance in 2016 with no contractual downtime

70%In the last five years we have consistently provided offshore teams with more than 70% in-house staff

Zero Zero LTIs in five years of operations

FOCUSED ON PERFORMANCE

100% personnel performance with no vessel downtime

Our reputation for quality is reflected in our exceptional personnel. We expect our personnel to integrate well with our customers’ project and vessel crew and perform to such a high standard that they are requested back on board vessels time and time again.

Developed closely in line with IMCA guidelines for offshore survey staff, our survey competency scheme applies to all survey personnel, onshore and offshore, and includes administration and technical staff. Our multidisciplinary approach to competency means that typically surveyors and data processors will have dual role positions. This allows for a greater degree of efficiency and flexibility by the Proserv survey teams when offshore.

Customer satisfaction exceeded on all projects

We ask for customer feedback from both onshore and offshore customer personnel for every project, with all feedback monitored through our QHSE department to drive constant improvement.

The biggest reflection of our performance comes from our ability to provide a seamless service offshore, and the facts speak for themselves. One of our KPIs is to provide our clients with less than 0.5% downtime; in the last three years Proserv Survey Services has had no contractual vessel downtime. Coupled with zero LTIs in five years of operation, these are just some of the reasons that we have been accredited to ISO9001:2008.

“Proserv has provided survey services to all of our projects over the last five years both onshore and on board our vessels. Through their knowledge and commitment, the Proserv survey team has provided us with consistently responsive and high quality solutions to our survey requirements.”

- COO, Ocean Installer

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Proserv is committed to using in-house personnel on all projects. From planning and preparation through to operations and demobilisation and close out, we have experts on hand to cover all aspects of service, every step of the way.

PROJECT EXPERTISE

10,000 Over 10,000 man days offshore to date 11 Number of countries

operated from

100 Over 100 successful offshore projects to date 25 Number of satisfied

end clients

Key Facts

Structure and Umbilical Installation

Providing survey support for many types of subsea installation work

Inspection, Repair and Maintenance

From mooring line replacement to spool metrology and pipeline inspection

NASNet® Positioning Support

Combining NASNet® with survey for fully integrated positioning support

Field Development

Full support through the development phase

Proserv has an established track record in the delivery of survey services to a wide variety of clients globally, for a number of different project types. Attention to detail and advance planning by operationally experienced onshore personnel with current technical skill sets is the key to our success.

Year Client Work scope Location

2016 Teekay Structural and pipeline inspection Norway/UK

2016 BWO Mooring line inspections USA

2016 Shell ICCP installation UK

2015 Statoil Spool metrology Norway

2012 Shell Pipeline inspection Ireland

Year Client Work scope Location

2016 Subsea 7 Field development positioning

Gulf of Mexico

2015 Statoil Field development positioning

Norwegian Sea

2011 Cairn Energy

Vessel and ROV positioning in Arctic Greenland

2007 Subsea 7 Field development positioning Nigeria

2006 UKMoD Submarine positioning Mediterra-nean

Year Client Work scope Location

2016 FASL Flowline, umbilical and flying lead installations Nigeria

2015 Saipem/Petrobras

Deepwater LBL installation & construction Brazil

2014 Shell As-laid and out-of-straightness surveys Norway

2013 Total Seabed MBES surveys and dredging UK

2012 Saipem LBL pile installation UK

Year Client Work scope Location

2016 Total Umbilical installation

Republic of Congo

2016 Enquest Pipeline installation and mooring rectification UK

2016 Exxon Structure and flying lead installation Norway

2015 LLOG Umbilical installation and surveys USA

2014 BP LBL umbilical installations and surveys USA

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PositioningCase Study Aasta Hansteen Development - Subsea Positioning

Client: Subsea 7Location: Norwegian SeaEquipment: NASNet® positioning systemWater depth: 1,200m

Background

In 2015 Subsea 7 selected NASNet® to provide field wide acoustic positioning throughout Statoil’s Aasta Hansteen field.

An array consisting of 17 NASNet® stations was installed along with various NASNet® MTrx QC references. ROV and vessel deployed VTrx systemsprovided ROV positioning and enabled system management functions to be performed.

Project Description

The NASNet® equipment was mobilised and the installation of the subsea array was completed by March 2015. The NASNet® array was successfully used by a range of construction vesselsfor various construction and survey tasks, including the installation of suction anchors and umbilicals.

The end of July 2015 marked the end of the first phase of the project, after which three NASNet® stations wererecovered from the seabed array in areas no longer requiring coverage. The remaining stations were put into standby mode until they were required for thesecond phase of the project, in March 2016.

As the campaign re-commenced

vessels were deployed to install turn-point anchors and continue their construction operations over a four month period. Once the project was completed the 14 remaining NASNet® stations were recovered from the seabed and returned to Proserv’s Howe Moss facility.

All in field construction activitieswere completed using NASNet®. ROV positioning made use of the NASNet® VTrx system, with the dunking version being used as necessary from the vessels’ decks. To facilitate safe deployment of the dunker, Proserv supplied a NASNet® DDS system.

Structure installation and position quality verifications were performed using NASNet® MTrx, providing position and telemetry data acoustically to the ROVs.

Scope

Proserv’s NASNet® equipment was shipped to Sandnessjøen, Norway where the client’s vessel mobilised for the installation and calibration of the NASNet® array. Despite challenging environmental conditions, NASNet® stations were deployed and positioned, averaging at less than four and a half hours per unit including calibration.

A series of campaigns with multiple vessels and operators used NASNet® during the project. Tasks undertaken include the installation of foundation and mooring piles, templates, jumpers and general ROV positioning in support of construction and in-field umbilical installation.

Conclusion

The NASNet® array at Aasta Hansteen provided acoustic positioning for over 200 vessel days spread across six different vessels over a two year period. Throughout the project Proserv has supported offshore operations with the NASNet® project team and NASNet®trained Survey Services personnel.

“…we are very satisfied with the attention to detail and quality of the NASNet® LBL array planning, preparations, training and support throughout the course of the project. The positioning performance during all installations and seabed surveys re-enforced our confidence in NASNet® LBL, and the system contributed increased flexibility, simplicity and efficiency to marine operations, ultimately reducing vessel time and cost...”

- Statoil 2016

The NASNet® array at Aasta Hansteen provided acoustic positioning for over 200 vessel days spread across six different vessels over a two year period, supported by NASNet® trained survey services personnel.

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Survey ServicesCase Study Deepwater ROV Construction and Survey

Client: SaipemLocation: BrazilEquipment: Vessel, LBL and WROV survey systemsWater depth: 2,220m

Background

The project was located in the Santos Basin of Brazil approximately 167 nautical miles offshore. Project water depth ranged between 2,140 metres and 2,220 metres. A five to seven man survey team was required for a duration of nine months.

Project Description

WROV systems were fitted with ROVINS inertial navigation systems to improve position accuracy and stability at depth. Each ROVINS was aided with USBL, LBL, DVL and digiquartz inputs. Proserv designed and provided bespoke ROVINS cabling to simplify sensor interfacing. A DVL splitter cable allowed the DVL PD13 output to be split subsea. This provided a feed directly to the ROVINS while maintaining the input to the ROV control system.

After in-field calibrations the units were proven to provide the expected three times improvement on USBL accuracy. Systems were verified using LBL arrays. Eight Sonardyne 6G LBL arrays were installed and calibrated by Proserv field staff.

Array analysis was performed in Geoline 3D during the project planning phase to assess the

seabed ranging that could be expected in the field. Cut to length and drill centre arrays were required to support the pipeline and free standing hybrid riser installations. Upon completion of LBL array calibrations, WROV tracking trials were conducted to ensure the arrays were functional.

Scope

The project scope of work included:• Provision, interfacing and

set-up, and calibration of survey equipment

• LBL array deployment, calibration and operation

• Pre-lay surveys• Survey installation support

for risers and structures• Touchdown monitoring for

risers• As-laid surveys and as-built

surveys

Vessel equipment included:• Veripos Ultra DGNSS• iXBlue HYDRINS• Seapath 200 heading

system• Kongsberg HiPAP 500

LBL equipment included:• Sonardyne DFE• 6G dunker• Sonardyne iWand DTU• Sonardyne 6G RTP & SVS

Compatts• Seabed frames & collars

WROV equipment included:• Sonardyne 6G ROVNAV• Valeport Midas SVX2• Paroscientific 8CB4000

depth sensor• Reson 7125 MBES

dual-head system• TSS440 pipetracker• iXBlue ROVINS• RDI WN-1200 doppler

velocity log• MacArtney Nexus MK4

multiplexor• Paroscientific 8CB4000

depth sensor• Imenco green laser• Hydraulic rams for ROVNAV• Wheeled undercarriage

Conclusion

The LBL arrays were installed, calibrated, operated and maintained over the nine month project duration without lost time due to Survey Services personnel.

“I would definitely recommend Proserv; an excellent job performed.”

- Saipem 2014

The LBL arrays were installed, calibrated, operated and maintained over the nine month project duration without lost time due to Survey Services personnel.

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