Hock Choon Teo

Perisai Petroleum Teknologi Bhd. operates as an investment holding company. The firm engages in the management, administrative and financial support services. It operates through the following segments: Offshore Drilling, Production and Support Vessels. The Offshore Drilling segment involves operation and maintenance services and provision of offshore assets which are primarily for oil and gas offshore drilling. The Offshore Production segment of offshore assets which are for oil and gas offshore production. The Offshore Support Vessels segment provides vessels, barges and equipment on vessels charter services. The company was founded on October 30, 2003 and is headquartered in Kuala Lumpur, Malaysia.

SapuraCrest Petroleum Bhd. engages in offshore drilling, marine installation, and construction. Its operations are carried out though the following business segments: Drilling, Installation of Pipeline and Facilities Division, Marine Services, Operations and Maintenance, and Development and Operation of Oil and Gas Field. The Drilling segment includes hydraulic workover units and services and snubbing and services. The Installation of Pipelines and Facilities segment provides transportation, erection, and installation of offshore pipelines. The Marine Services segment consists of marine positioning, hydrographic analysis, pile monitoring services, geotechnical system maintenance, and underwater ROV inspection and intervention. The Operations and Maintenance segment offers repair and maintenance of industrial gas turbines, wellhead maintenance, slicking services, valve maintenance, and general plant maintenance. The Development and Operation of Oil and Gas Field segment includes installation of pipelines, offshore drilling, marine services, and turbine refurbishment. The company was founded on March 3, 1979 and is headquartered in Seri Kembangan, Malaysia.

InterChem Pte Ltd. engages in trading of petroleum and petrochemical products. The company is headquartered in Singapore.

Part of McDermott International, Inc., Offshore Pipelinesinternational Ltd. is a Caymanian company.