钻井液对页岩井壁的稳定性能评价方法探讨  

Discussion on Evaluation Methods for Stabilizing Effect of Drilling Fluid on Shale Well Wall

作　　者：赵虎 司西强 王善举 孙举 

机构地区：[1]中原石油工程有限公司钻井工程技术研究院,河南濮阳457001

出　　处：《石油工业技术监督》2019年第2期12-15,共4页Technology Supervision in Petroleum Industry

基　　金：中国博士后科学基金项目"钻井液用两性甲基葡萄糖苷的合成及其作用机理"(编号:2012T50641);中石化集团公司科技攻关项目"页岩油气水平井水基钻井液技术研究"(编号:JP14021)

摘　　要：页岩气钻完井过程中较易出现掉块、反复划眼和憋停顶驱等井下复杂情况,因此井壁稳定是技术难题之一。较为精准地评价钻井液对页岩的井壁稳定能力,在坍塌周期内选取合理的钻井液钻完井成为关键。通过室内实验,分析钻井液对页岩井壁稳定性评价方法的优缺点,以期为不同页岩气地层合理选用钻井液提供参考依据。In the process of shale gas drilling and completion well, it is easy to occur complex downhole conditions such as block falling,repeated reaming and bit bouncing. Therefore, wellbore stability is one of the technical difficulties.It is the key to accurately evaluate the stability of drilling fluid to shale wellbore and to select reasonable drilling fluid to drilling and completion well in collapse period. The advantages and disadvantages of the evaluation methods for stabilizing effect of drilling fluid on shale well wall are analyzed in order to provide reference for reasonable selection of drilling fluid in different shale gas formations.

关 键 词：页岩气 水基钻井液 井壁稳定性能 评价方法 

分 类 号：TE254[石油与天然气工程—油气井工程]