摘要
广安构造储层具有低孔、低渗、低压特征,储层水敏、盐敏、应力敏感,储层遇到损害后,很难用其它措施恢复产量。欠平衡水平井钻井技术是开发广安构造的主要手段。广安构造使用了中空玻璃微球欠平衡、油包水欠平衡、气体欠平衡等欠平衡技术;使用了长水平段水平井技术、分支井技术、旋转地质导向技术、电磁波随钻地质导向技术等先进的水平井技术。通过对多种技术的结合使用,完善了各项工艺技术,总结出了几套适合广安构造开发的水平井钻井方案。
Guang'an reservoir has such features as low porosity,low permeability,low pressure,water sensibility,salt sensibility and stress sensibility,so if the reservoir is damaged,it is very hard to regenerate the formation productivity.The application of UBD technique is the main measures to develop the Guang'an reservoir.In Guang'an structure,many types of drilling fluids have been applied such as XMAG(microballoon sphere drilling fluid),water-in-oil drilling fluid,gas drilling fluid etc.,meanwhile,the horizontal drilling technique with long horizontal section,multilateral well drilling technique,rotary geosteering drilling technique and EM-MWD technique have been used in the area.Through the conjunctive use of many technologies,the horizontal drilling schemes suited for Guang'an structure has been summarized.
出处
《钻采工艺》
CAS
北大核心
2008年第1期15-17,共3页
Drilling & Production Technology
关键词
欠平衡
水平井
钻井液
套管闽
PDC钻头
分支井
电磁波随钻地质导向
underbalanced drilling,horizontal well,low density drilling fluid,rotary geosteering,casing valve,PDC bit,multilateral well,EM-MWD,water-in-oil drilling fluid
