China Oilfield Services : COSL’s 12-streamer Vessel “HYSY721” Delivered Successfully

China Oilfield Services Limited ("COSL" or the "Group) announced recently that its newly-built 12-streamer vessel "HYSY721" has been successfully delivered in Shanghai.

HYSY721, the second major seismic vessel invested by COSL, is capable of driving 12 streamers, each of 8,000 meters in length, for seismic explorations. Its performances in all measures are on par with international advanced levels. It is capable of high-density seismic data collection at a maximum intensity of up to 3000PSI. Equipped with the new generation seismic data collection system, an integrated navigation system, a lateral streamer control system, a complete geophysical mechanical remote control system and an advanced diesel-electric propulsion system, HYSY721 is able to deliver high efficiency and premium seismic data collection quality at lower fuel consumption, more steady and quieter operation.

HYSY721 will be put into operation after completion of tests for its geophysics equipment.

HYSY720, another vessel of the same model, has achieved good results and hit new records for COSL's data collection operations a few times after its delivery in May 2011.