四川石油局、西南石油学院联合承担的“七五”国家科技攻关项目“四川定向井钻井技术研究”的重点试验井—隆40—1大斜度定向井,于5月底完钻,该井的各项技术指标均达到和超过专题合同要求。四川盆地地层破碎,裂缝发育,应用定向井工艺技术,是提高勘探成功率的有效途径。通过隆40—1井的试验、研究,初步形成了一套行之有效的钻大斜度定向井工艺技术及安全 Sichuan Petroleum Bureau, Southwest Petroleum Institute jointly undertake the “five” national scientific and technological project “Sichuan directional drilling technology research” key test well - Long 40-1 high angle directional well, completed by the end of May, the well The technical indicators have reached and exceeded the special contract requirements. The formation of fractures and fractures in the Sichuan Basin and the application of directional well technology are effective ways to improve the exploration success rate. Through the test and study of Long 40-1 well, a set of well-established drilling technology and safety technology of high gradient directional well have been formed