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由华北石油管理局与美国安拉交尔(ANADRILL)定向井公司合作,我国第一口中曲率水平井——任平1井——于1991年2月24日开始水平段钻进,设计水平段长度300m。该井上部井段由中方完成,先用10°/100m的造斜率钻至井斜38°,然后稳斜钻入潜山,下φ244.47mm技术套管。三开用φ215mm钻头,由安拉交尔定向井公司提供技术、工具,以14°/
By the North China Petroleum Administration and the United States AOL (ANADRILL) Directional Well Company cooperation, China’s first middle curvature horizontal well - Ren Ping 1 - in February 24, 1991 began horizontal drilling, design level Segment length 300m. The well section of the well was completed by the Chinese side. The slope was first drilled to a well inclination of 38 ° with a slope of 10 ° / 100m and then steeply diagonally into the buried hill with a φ244.47mm technical casing. Three opened with φ215mm drill bit, the company provided by Allah Jar directional well technology, tools, to 14 ° /