Subsea 7 to work with Premier on field studies, installations

Offshore staff

LONDONSubsea 7 has signed a long-term partnership frame agreement with Premier Oil.

The subsea contractor will provide the London-based operator with concept engineering, front-end engineering and design (FEED), subsea, umbilicals, risers and flowlines (SURF) project execution and life of field operations, on a preferred supplier basis.

Additionally, Subsea 7 may participate in Premier’s decommissioning programs. 

The agreement covers Premier’s activities offshore the UK, Norway, and the Falkland Islands and runs for five years, with options for an extension.

Through early engagement on Premier’s projects Subsea 7 aims to develop technical solutions with realistic cost evaluations. Currently the contractor is supporting the operator’s Catcher development in the UK central North Sea.

Steve Wisely, executive vice president, Northern Hemisphere & Life of Field, said: “We believe the partnership approach facilitates cost reduction through fit for purpose solutions.”

In a results statement, Premier says it has validated two alternative concepts for its Vette field project in the Norwegian North Sea.

The company expects to select the preferred host facility for the development before year-end 2015, followed by a project sanction decision during 1H 2016.

At the Solan field center west of Shetland, commissioning of the offshore installation systems is progressing as planned, although completion of this activity depends on weather conditions.

Various critical platform systems have been successfully commissioned including the firewater deluge and other safety-related systems. All subsea infrastructure has been commissioned, and all utilities, including power, fuel supply and air, are ready for first oil.

Tanker trials work started on Nov. 10 and the flotel Superior should sail in on Nov. 20 to replace the current flotel Regalia.

The first two producer-injector wells required for first oil have been tied in. Drilling of the second producer well started in July, with more than 1,000 ft (305 m) of the reservoir section completed.

However, during drilling of the remaining reservoir section there were technical difficulties that led to the well being suspended.

Currently the Ocean Valiant is drilling the second injector well and the second producer should be side tracked next spring. When both wells come onstream, plateau production of 20-25,000 boe/d should follow.

At Catcher, this year’s subsea installation schedule has been completed with the pipeline end manifold and tow templates in place at the Burgman and Varadero accumulations. The 60-km (37-mi) gas export pipeline was laid during July.

Fabrication of the subsea flowline bundles and associate towheads, the buoy and the mid water arches (riser buoyancy aids) is on schedule and these will be installed next summer.

In July, the Ensco 100 started development drilling, and has to date drilled two wells.

Operations on the first Catcher water injection well (CTI1) were completed with good reservoir results. The second water injector, (CCI2), has reached TD and is in the final phase of completion.

Fabrication of the FPSO hull and topsides continues in the Far East (BW Offshore is the FPSO contractor), and topsides module construction is making good progress in Batam and Singapore. Catcher remains on schedule for first oil in 2017.

In Indonesia, Premier says FEED has been completed on its next planned field developments for Natuna Sea block A: Bison, Iguana, and Gajah Puteri.

These projects will fulfil existing Singapore and domestic market contracts. An investment decision will follow in late 2016.

In the North Falkland basin, the semisubmersible Eirik Raude will next re-drill the Isobel/Elaine complex (potential resource of 400 MMbbl), with results expected early next year. Premier will then use the rig to drill the Chatham exploration target in license PL032 and to appraise the anticipated gas cap in the west of the Sea Lion field.

Offshore Brazil, the company’s Ceara basin 3D seismic survey acquisition is 50% complete.

In Mexico, detailed technical evaluation is under way for blocks 2 and 7, both signed in September under a joint venture.


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