On May 9th, reporters learned that the CG STEER 625-175 rotary steering system independently developed by Chuanqing Drilling achieved success in its first on-site test. This breakthrough in the development of the key instrument marks that China has acquired a new technological tool to deal with unconventional oil and gas slim wells.

On May 10, reporters learned that the second ketone-benzene unit at Daqing Refining and Chemical Company has successfully completed the oil replacement for its ammonia compressor, fully substituting imported specialty refrigeration oil with domestically produced alternatives. This achievement not only breaks reliance on imports but also creates significant cost-saving potential—procurement costs dropped by 62.33% year-on-year, and each single-machine oil change saves approximately 76,000 yuan.

As of May 17, after applying CCUS-EOR (carbon dioxide capture, utilization and storage-enhanced oil recovery) technology in the Niuquanhu East area of Santanghu Oilfield, Tuha Oilfield has achieved cumulative oil production increase exceeding 20,000 tons in the pilot block, with a recovery factor improved by 1.4%, effectively doubling production in the test area.