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05/10Notification Letter and Reques...
05/10Notification Letter and Reques...
05/10Supplemental Proxy Form for 20...

COSL operated and managed 15 seismic and engineering survey vessels, 59 drilling rigs (44 jack-ups, 15 semi-submersibles), 10 accommodation rigs, 5 modular rigs, more than 20 drilling (workover) machine,860 units of modern facilities and equipments for logging, directional drilling, drilling-fluids handling, cementing, and well workover services and 150 oilfield services vessels of various kinds.

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COSL focus on its people-oriented philosophy and encourage career development of our staff, deepen our relationship, facilitate common development among the Company and our staff, strive to develop a responsible supply chain, make progress in strategic cooperation for mutual benefits, as well as increase our efforts on welfare so as to contribute to the society.

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