川中井下作业公司作业9队于1993年8月在文4-1井喜获工业油流。文4-1井是川中32725钻井队在原文4井1267m处开窗侧钻,造斜钻成的一口定向斜井。川中钻井、作业队职工精心操作,精心施工,终于在该井大安寨层喜获日产9.67m～3的工业油流及工业气流。这口侧钻井的试验成功,为川中油气公司积极采用 The operation team of Sichuan Zhongzhong Downhole Operations Company won the industrial oil flow in Wen-4-1 in August 1993. Wen 4-1 well is a directional well drilled by the 32725 drilling team in Sichuan Province at the 1267m site of the original 4 well. Drilling in Sichuan, working team carefully operating, meticulous construction, and finally in the well Da’an Walled won Nissan 9.67m ~ 3 industrial oil and industrial gas flow. The successful trial of this side-hole drilling was actively adopted by the Central Sichuan Oil and Gas Company