摘要
采用新型裂缝封堵评价装置对桥塞封堵裂缝的动态过程进行了分析,探索了桥塞堵漏材料在裂缝中的封堵规律,揭示了粒度连续分布的桥塞材料在裂缝中将形成多级封堵层这一现象,同时裂缝封堵过程中,随封堵压力的增加各级封堵层都将经历形成-被破坏-再形成的过程,且最后一级封堵层的位置由最大粒度的桥塞材料所决定。
A new evaluation device on plugging fracture was introduced to research the mechanism of bridge plugging.Study showed that plugging particles sized distribution will form a multiple-level barrier in fracture with the increase of pressure,then they experience formed,destroyed,and reformed process,and the last barrier's positon was determined by the maximum size of the bridge plug material.
出处
《钻井液与完井液》
CAS
北大核心
2014年第1期44-46,98,共3页
Drilling Fluid & Completion Fluid
基金
中石化科技部项目"川西深层复杂地层井筒强化技术研究"(P10037)部分研究成果
关键词
裂缝
桥接堵漏
封堵规律
多级封堵层
Fracture
Stop mud loss with bridging materials
Plugging mechanism
Multiple-level barrier
