甲酸钾钻井液技术现场应用

甲酸钾是国外90年代末用于钻井完井液的新型添加剂，成功地用于高密度钻井完井液体系中，具有强抑制，配伍性好，环境保护，油层保护等突出优点，着重介绍了甲酸钾在新疆克拉玛依莫北005区块MB5001井的现场使用状况，并对其钻井液技术进行了总结。现场应用结果表明，甲酸钾抑制粘土水分散膨胀能力强，控制坂含低，返出的钻屑呈小圆粒状，内部呈干性，钻井液水糊振动筛，不跑浆，具有抑制性强，失水造壁性好，润滑性好，机械钻速快，成本低，经济效益显等特点。

Drilling Fluid Technology

KCOOH is made of HCOOH and KOH at high temperature and high pressure (HTHP). It was successfully used as a new additive in high?density drilling and completion fluid system at the end of the 1990s' overseas. Because of the outstanding properties such as strong inhibition, good compatibi1ity, environmental protection, oi1 reservoir protection, and so on, this paper stressed the application technology of KCOOH in MB5001 well of Mobei 005 area, Kelamayi in Xinjiang. The results showed that KCOOH could strongly inhibit clay hydration, and made MBT low level,and the rock debris returning out from the well presented small circular particle, and its inside was dry, and drilling fluid would not be attached to screen shaker and ran out. So it had the special properties such as strong inhibition, good filtration characteristics, good lubrication, fast machine rotation, low cost,good economic benefits,and so on.