Acquisitions Shell BC 10 Phase 2 Conductor Installation InterMoor has completed the installation of electrical submersible pump (ESP) conductors for the artificial lift manifold as part of the Shell BC-10 Phase 2 project. The company was responsible for the fabrication and installation of four conductors (and one spare). Weighing more than 70t, the 48in diameter conductors measured 60m in length and had a 1.5in wall thickness. They were fabricated at InterMoor’s 24acre Louisiana facility. The conductors were installed in water depths up to 5600ft (1707m) off the coast of Brazil in the northern Campos Basin using DOF Subsea’s anchor handling vessel Skandi Skolten under charter to Shell Brasil. InterMoor provided an installation barge with customised launch system. It installed conductors
through four corner holes in a template by self-penetration using its patented Suction to Stability (STS) method. InterMoor used MENCK’s MHU270T DWS which included a deepwater hydraulic hammer capable of providing a driving energy of 270kj at a water depth of 1000m (3281ft) combined with MENCK’s girdle-type electrohydraulic power pack and umbilical support system. Generating hydraulic power at depth, rather than at the surface obviates the need for a hydraulic hose. It gives provides minimal energy loss at depth and low environmental impact. The tolerance requirements of less than 1deg verticality and within six inches relative elevation were critical and could not be achieved by traditional jetting methods from a semisubmersible. l Intermoor has launched MoorVision, an innovative software system that provides clear, up-to-date photos of the infrastructure in any defined area in the Gulf of Mexico (GoM) using Google Earth.
Loading the 60m conductors
The first step for drilling with a moored mobile offshore drilling unit (MODU) in the GoM is to secure a permit. This involves evaluating the risk of damaging existing infrastructure.
Proserv Contracts Proserv has secured two major contract wins worth in excess of £6 million. The company will provide subsea control systems on both projects. The first is for Maersk Oil UK to support the company on the Talisman-operated Clyde platform. Maersk is developing a 25km subsea tieback to the platform. Proserv will provide electro-hydraulic multiplex subsea control systems, along with its associated topside and subsea
UT2 August 2012
interface systems, as part of the 12-month workscope. The second contract, with an unnamed company, involves Proserv delivering topside and subsea manifold control systems support on a development in the Southern North Sea. Proserv’s team has been significantly enhanced since the company acquired Weatherford’s Great Yarmouthheadquartered Subsea Controls subsidiary earlier this year.
Moorvision image Difficulties in obtaining accurate well, pipeline and platform production data can make this a labour-intensive and time-consuming process. The MoorVision system helps to cut the time required to gather the necessary information by accessing and presenting publicly available information from the Bureau of Ocean Energy Management Regulation and Enforcement (BOEMRE).
DeepOcean DeepOcean has completed pre-cut trenching on the Skagerrak 4 HVDC submarine interconnector project for Statnett & Energinet. DeepOcean provided the engineering and project management for the project in Denmark, including pretrench survey and pre-cut trenching of 23km of the Skagerrak 4 route. l DeepOcean was also awarded a contract by AF Group in connection with the removal and recycling contract for the B-11 riser platform cessation project for Statoil, on behalf of Gassco as operator for Gassled. The platform, which is part of a gas pipeline system that transports gas to Europe, is located on the German continental shelf of the North Sea. The estimated contract value is in excess of NOK 75 million. The work will be completed within end of 2016.
The August edition of UT3, the magazine of the SUT