LONDON– EnQuest says the FPSOArmada Krakenfor the heavy-oil Kraken development in the UK northern North Sea is securely moored at the field location, following hookup of the STP buoy mooring system and a full rotation test.
The risers and umbilicals have since been pulled in. Work continues in the turret area and on topsides commissioning. Once turret activity has been completed, subsea commissioning will start.
All drilling has finished on drill centers DC-1 and DC-2, with the rig set to transfer to DC-3. At start up (anticipated by mid-year), 13 wells will be available comprising seven producers and six injectors – these will be brought onstream in a phased manner.
As for EnQuest’s already producing fields in the UK sector, at Thistle and Heather the partners are working on a program to abandon redundant well stock, the aim being to reduce risk and present opportunities in future for drilling further infill wells when circumstances allow.
Partial well abandonments already lined up at Thistle will continue through 2017, with work on well A05/25 having started in January.
The Brent pipeline system operator plans a further shutdown this year, which will likely lead to an enforced shutdown of Thistle in the summer and also at EnQuest’s Don fields complex.
Following the Thistle well campaign, the drill crew will move to Heather in the second half of the year to start a similar program of well decommissioning. In this case, removing legacy wells should safeguard the field’s high water injection efficiency, EnQuest says.
The Heather hub will likely be shut down for routine inspection and maintenance during 3Q.
At the Greater Kittiwake Area (GKA) in the UK central North Sea, this year’s focus will be on optimizing production, concluding remaining work related to tie-in of production from theScolty/Crathes fields, and replacement of the associated gas compressor (A-Gas).
The Grouse field will also be offline during the gas system shutdown.
No drilling is planned on GKA this year, although evaluation of the Eagle discovery continues. To coincide with this summer’s three-week shutdown, EnQuest plans a chemical treatment (scale squeeze) in the Mallard well.
AtAlma/Galia in the same sector, the final phase of power optimization and produced water/sea water injection projects will be completed on the FPSO EnQuest Producer.
Discussions are under way with the supplier of the downhole electric submersible pumps on plans for addressing reliability issues.
Offshore Peninsular Malaysia, the company plans further production enhancements at the PM8/Seligi facilities in the form of low-cost well interventions and upgrades to the gas compression control system in order to improve reliability.
Maintenance and integrity inspection campaigns will continue of platform structures, topsides, and subsea pipelines, with a full maintenance shutdown planned during 3Q.
Over the longer term, EnQuest plans to extend field life through investment in idle well restoration, facility improvements and upgrades and studies supporting development drilling and secondary recovery projects.
It expects to define the first new drilling projects later this year for execution in 2018, and to progress rebuilding of static and dynamic reservoir simulation models to support a more extensive field redevelopment.
At Tanjong Baram, the company is reviewing three options for reviving the A1 well.