COSL successfully completed a Deep-water In-situ cone penetration testing on the sea floor May 21, 2015
China Oilfield Services Ltd. reported that HYSY709, the firm's geotechnical vessel, has recently completed a full course of in-situ cone

COSL chartered a new drilling rig, Excellence I Jun 30, 2014
China Oilfield Services Limited has chartered a 400-feet jack-up rig, “Excellence I”, from ICBC Financial Leasing Co., Ltd. under an operating lease, and a naming ceremony for this rig hosted.

COSL chartered Gulf Driller I, another new 300-feet Jack-up Rig May 14, 2014
China Oilfield Services Limited has entered into a contract with ICBC Financial Leasing Co. for chartering of a new 300-feet jack-up

Primeline commences 3D seismic survey in Block 33/07, East China Sea Apr 2, 2014
Primeline Energy Holdings Inc. announced that its contractor, China Oilfield Services Ltd. (COSL), has

COSLGift sets sail to Southeast Asia to start operation Jan 7, 2014
China Oilfield Services Limited announced that COSLGift, the jack-up rig newly acquired by the Group, had completed construction, been