中国石油网消息：5月29日获悉，川庆钻探自研反循环气体钻井技术在浙江油田YS108H4平台最后一口井表层固井施工中取得圆满成功。
China Oil News: On May 29th, it was learned that the self-developed reverse circulation gas drilling technology of Chuanqing Drilling Company achieved a complete success in the surface cementing operation of the last well at the YS108H4 platform of Zhejiang Oilfield.
这是国内油气领域首个平台井采用全自主知识产权反循环钻井技术成功完成表层“钻通固”批量化作业，顺利钻穿失返性漏层6个，并创造国内直径480毫米井眼反循环钻井最深360米和进尺最长356米两项纪录。
This is the first time that a platform well in the domestic oil and gas sector has successfully completed a batch of "drilling-through and solidification" operations using fully self-owned intellectual property reverse circulation drilling technology. It successfully drilled through six non-recoverable leakage layers and set two domestic records: the deepest reverse circulation drilling depth of 360 meters for a 480-millimeter diameter wellbore, and the longest drilling footage of 356 meters.
针对该平台地质和工程难题，川庆钻探反循环钻井技术团队制定了包括井漏、掉块、井斜控制及地层出水等处置措施的施工方案，圆满完成该平台3口井的反循环“钻通固”井作业，平均每口井较常规钻井节约堵漏复杂处理时间超7天，节省生产用水约5000立方米。
In response to the geological and engineering challenges of this platform, the anti-circulation drilling technology team of Sichuan Qingdao Drilling Company formulated a construction plan including measures for well leakage, blockage, well deviation control, and outflow of formation water, etc. They successfully completed the anti-circulation "drilling-through and solidification" well operations for 3 wells on this platform. On average, each well saved more than 7 days of complex leak sealing processing time compared to conventional drilling, and saved approximately 5,000 cubic meters of production water.
较常规气体钻井节约注气设备75%以上，避免井壁冲蚀失稳和井眼“大肚子”带来的挟砂难题，为页岩气平台表层井眼批量钻井开辟了新路径，缓解了大钻机资源紧张的生产矛盾及油田公司提前见产的迫切需求。
Compared with conventional gas drilling, it saves more than 75% of the gas injection equipment, avoids the problems of well wall erosion instability and "big belly" of the wellbore that lead to sand entrainment, and opens up a new path for batch drilling of surface wellbores on shale gas platforms. It also alleviates the production contradiction caused by the shortage of large drilling rigs and the urgent need for early production of oilfield companies.