COSLProspector semi-sub delivered

The first new-build semi-submersible drilling rig incorporating Wood Group Mustang Norway’s (WGMN’s) GG5000 floating hull design has been delivered to COSL Drilling Europe (CDE).

The rig, built by CIMC Raffles, was recently on sea trials in China.

The COSLProspector was designed to operate in water depths up to 1,500 metres (5,000 feet) and drill wells up to 7,600 metres (25,000 feet). The unit is planned for use on the Norwegian Continental Shelf (NCS).

WGMN says it was responsible for the basic design and participated in the detailed design of the semi-submersible hull and main marine systems. The 50,000 man-hour project was engineered to Norwegian Petroleum Directorate (NPD) standards.

“The delivery of the rig as designed is the result of a highly successful collaboration among WGMN, CDE and Yantai CIMC Raffles Shipyard,” explained Otto Søberg, president of WGMN.

“We worked closely with CDE to ensure the design of the rig would meet its needs and objectives and with the shipyard to deliver the rig as planned, thereby avoiding costly construction modifications common to the industry.”

Prior to designing the COSLProspector, WGMN performed the modification design and engineering for three CDE drilling rigs: COSLPioneer, COSLInnovator and COSLPromoter.

“The success of the COSLProspector project is due to hard work from all parties involved. COSL, the yard and WGMN worked closely together, resulting in a rig that I know will do an excellent job for COSL and our clients,” said Jørgen Arnesen, CEO of CDE.

WGMN is currently providing engineering services for another semi-submersible to CDE’s parent company, China Oilfield Services Limited (COSL). COSL chose WGMN’s A5000 semi-submersible drilling rig design for its new-build HYSY982 rig, which is planned for operation in the South China Sea.

WGMN’s scope is the result of another basic design project and includes detailed design work for the hull, marine systems and the integration of the drilling equipment package.

 

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