摘要
伊通地区地层层理裂隙发育,由于强地应力作用及地层倾角大,加剧了掉块井塌、井斜的发生。通过实验优选出强抑制性双聚防塌钻井液。经现场应用表明,通过采用该强抑制性双聚防塌钻井液,钻井施工顺利,较好地解决了井壁稳定问题,避免了井下复杂情况的发生,机械钻速提高5.08%,钻机月速度提高528.53m/台月,提高幅度为39.09%,钻井周期减少了4.9d,约缩短了11.52%,井身质量合格率为100%,固井质量合格率为100%,优质率为16.67%,井眼扩大率小于8%,井径规则,满足了伊59区块钻井施工的需要。
The polymer anti-caving drilling fluid is studied and optimized for the drilling difficulties relating to formations in Yitong.Using this polymer anti-caving drilling fluid,the rate of penetration is increased by 5.08%,drilling time is reduced by 11.52%,borehole enlargement rate is less than 8% and well bore quality and cement job quality are excellent.Owing good rheology and stability,the polymer anti-caving drilling fluid system can meet the requirement of drilling operation in block of Yi-59.
出处
《钻井液与完井液》
CAS
2010年第6期89-91,共3页
Drilling Fluid & Completion Fluid
关键词
双聚防塌钻井液
强抑制性
防塌
井壁稳定
Polymer anti-caving drilling fluid
High inhibition
Anti-caving
Borehole stability
