Abstract: This paper summarizes the techniques and experience of highly deviated wells in Sichuan Basin,Southwest China in the sixties,and gives the praspeet of future development.The more than 20 wells drilled in 1965-1966 include horizontal well,highly deviated multi-hole wells,mufti-hole coring wells with large horizontal displacement,and continuous coring deviated wells.Special instruments,tools and equipment were developed to meet the needs of drilling,coring,logging,cementing and completion of these highly deviated wells.Spevial technology was also developed,and some major parameters crf perfarrnance reached advanced world level at that time.

摘要： 六十年代在找国四川盆地进行了大规模的大斜度定向井科技攻关,其中包括水平井、大斜度多底井、储层内的大水平位移的取心多底井和连续取心单斜井共20多口的科技攻关.这次科技攻关中,在短期内成功地研(改)制了几十种钻井、取心、测井、固井和完井的地面设备,井下工具和仪器,提洪了必要的技术手段;创造了多种类型大斜度定向井的成套工艺技长,其主要项目指标均达到当时的世界先进永平.