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Technologies of Water and Gas Shuttoff in Horizontal Wells:An Overview
Author(s): 
Pages: 85-90,96
Year: Issue:  1
Journal: OILFIELD CHEMISTRY

Keyword:  调剖堵水堵气水平井调堵剂置入方式工艺方法综述;
Abstract: 水平井在开采过程中更容易出现过多产水产气现象,需要采用适当的调堵技术.本文归纳了复杂结构井调堵中应遵循的基本原则,比较详细地介绍了调堵剂置入方式不同的三大类调堵技术:①分隔注入技术,如使用预置式工作筒;②定位注入技术,在割缝套管水平井中使用环空化学封隔层,在连续套管水平井中使用二元注入法;③笼统注入技术.通过对众多现场试验的分析,讨论了高产气、高含水的原因,调堵措施,施工工艺,调堵结果及成功与失败的经验.图2参17.
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