深水钻井井身结构设计方法  

Casing Design and Optimization for Deepwater Drilling

作　　者：管志川[1] 柯珂[2] 苏堪华[3] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555 [2]中国石化石油工程技术研究院,北京100101 [3]重庆科技学院石油与天然气工程学院,重庆401331

出　　处：《石油钻探技术》2011年第2期16-21,共6页Petroleum Drilling Techniques

基　　金：国家高技术研究发展计划("863"计划)课题"深水钻完井关键技术"(编号:2006AA09A106)部分研究成果

摘　　要：深水钻井导管常采取喷射下入方式,表层套管井段为开眼循环钻进,浅部地层破裂压力梯度低,地层压力信息具有较大的不确定性。因此,其井身结构在套管层次、尺寸和设计方法上,与浅水及陆地钻井有着较大区别。在对目前深水钻井井身结构调研的基础上,重点从深水钻井水下井口力学分析及导管下入深度确定方法、表层套管下入深度确定方法、压力信息不确定条件下的套管层次及下入深度确定方法等三个方面,对深水钻井井身结构设计方法进行了阐述,并在此基础上探讨了深水钻井井身结构设计方法的下一步研究内容。Deepwater drilling has the characteristics of special jet-in technique for conductor; open-hole drilling for surface casing section; low formation fracture pressure gradient in shallow formation,and higher uncertainty in formation pressure information. Therefore there are significant differences for casing design and optimization compared with shallow water and onshore drilling. The subsea wellhead mechanical stability and conductor setting depth, surface casing setting depth, casing program and setting depth under formation pressure uncertainties were detailed for deepwater casing design and optimization based on investigation of deepwater well structure. Further investigation of deepwater casing design was pointed out in this paper.

关 键 词：深水钻井 井身结构设计 导管 

分 类 号：TE22[石油与天然气工程—油气井工程]