合川气田快速钻井的难点与对策  

Difficulties and Solutions of Faster Drilling in Hechuan Gasfield

作　　者：梁益[1] 陈家凤[1] 王雁飞[1] 胡萍[1] 丁振龙[1] 

机构地区：[1]中国石油天然气集团公司川庆钻探工程公司,四川成都610051

出　　处：《天然气技术》2010年第1期52-54,共3页NATURAL GAS TECHNOLOGY

摘　　要：合川气田位于川中古隆平缓构造区的威远至龙女寺构造群。针对该气田地层夹层多、地层易漏、浅层油气显示活跃、须家河组地层可钻性差等影响钻井提速的因素,分析了第2次开钻和第3次开钻井身结构的破岩效率,提出了优化井身结构和钻头选型、采用旋转防喷器欠平衡钻进、使用井下动力钻具等提高机械钻速的措施。Located at Weiyuan-Longnvsi Structure of gentle structural area, Hechuan gasfield in the Central-Sichuan Paleuplift is characterized by much interlayer among strata, especially poor drillability, easy leaking, active oil/gas show and shallow safety window for Xujiahe Formation. These features can affect a faster drilling. In this paper, efficiency of breaking rock of casing program during second and third drilling is firstly analyzed, and then some solutions to increase a penetration rate are presented, such as underbalanced drilling with rotary blowout preventer, using downhole dynamics tools and optimizing bit selection.

关 键 词：合川气田 钻井 钻井速度 措施 

分 类 号：TE242[石油与天然气工程—油气井工程]