动态负压作用机理研究综述  

Review on Dynamic Underbalance Mechanism Research

作　　者：常鹏刚[1] 王永清[1] 张彦杰[1] 谢刚儒 卢怡[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《重庆科技学院学报（自然科学版）》2014年第6期96-99,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项(2008ZX05054)

摘　　要：总结动态负压效应的各种作用机理,通过宏观作用机理和微观作用机理进行分析。宏观作用机理包括了压实带渗透性能的改善、应力突变致使微裂缝网的形成以及压实带强度的弱化;微观作用机理包括了射孔孔道直径的扩大、畅通孔道长度的增加以及压实带厚度的减小。This paper summarized all the mechanisms of the dynamic underbalance,both macro mechanism and micro mechanism. The macro mechanisms include the permeability of compacted zone improvement,the formation of micro fracture network caused by stress mutation and the decrease of strength of compacted zone. The micro mechanisms include expanding the diameter of the perforation tunnel,extending the length of open tunnel and decreasing the thickness of the compacted zone.

关 键 词：射孔技术 动态负压 射孔孔道 压实带 

分 类 号：TE312[石油与天然气工程—油气田开发工程]