From the CNPC site :

"
We became one of world's top-6 deepwater prospecting service providers and maintained a fast growth momentum. In 2011, we completed 5,378 square kilometers of 3D profiles and 19,620 kilometers of 2D lines in 14 projects. Our excellent deepwater operation in Oman, Algeria, and Venezuela was highly praised by the owners. BGP-Prospector, one of the most advanced streamer vessels in the world, was launched. The ship can operate in waters as deep as 40-1,000 meters, with a towing capacity of 12 streamers."

http://www.cnpc.com.cn/en/OilfieldServicesEngineeringConstructionandEquipmentManufacturing2011/AnnualBusinessReview_common.shtml