摘要
针对渗透性漏失地层,开发出一种封堵效果好、封堵范围广的随钻堵漏剂ASK-1。ASK-1随钻堵漏剂主要由柔性粒子和聚合物复配组成,通过两者的共同作用达到快速有效封堵孔隙或微裂缝的作用。该堵漏剂对孔径较宽渗透漏层封堵作用良好。室内评价,在一定范围内,渗透率封堵率超过90%以上,封堵带强度大于8MPa。现场应用证明,可有效提高地层承压能力,且防漏及堵漏效果良好。
According to the features of permeable formation,a lost circulation additive ASK- 1 while drilling was developed. The lost circulation additive ASK- 1 was composed of flexible particle and polymer,their interaction could seal effectively pore and microfracture. The laboratory evaluation showed that the plugging rate of ASK- 1 was more than 90%,and the plugging strength was over 8 MPa. And field application proved the ASK- 1 could enhance formation bearing pressure and has good plugging effect.
出处
《钻采工艺》
CAS
北大核心
2015年第3期37-39,42,共4页
Drilling & Production Technology
基金
国家"十五"科技攻关项目(2002BA312B)
中国石油天然气集团公司重点科技攻关项目(06B2010203)资助
关键词
随钻
防漏
堵漏
钻井液
while drilling,leak protection,plugging,drilling fluid
