生物酶可解堵钻井液降解动力学模型研究  

Dynamic Model Study on Drilling Fluid Degradation Using Biological Enzymes

作　　者：杨倩云[1] 郭保雨[1] 

机构地区：[1]胜利石油管理局钻井工程技术公司

出　　处：《钻井液与完井液》2007年第1期15-16,共2页Drilling Fluid & Completion Fluid

基　　金：中国石油化工集团公司2006-2008年度基金项目<生物酶可解堵钻井液体系的研究>(编号为:GKZ0607)部分内容

摘　　要：新型的生物酶可解堵钻井液是利用生物酶的生物降解特性,将钻进过程中侵入地层和黏附在井壁上的暂堵材料降解为二氧化碳和水,保障地下流体通道畅通,恢复油层渗透率,实现对地层超低污染、低伤害钻进。本文从生物酶降解处理剂的过程出发,以“稳态平衡”为前提,分析推导出了该体系的降解动力学模型,为实现该体系降解速度的人为可控提供了理论依据。The biological enzymes can be used in the degradation of the invading drilling fluids by converting the temporary bridging and plugging agents to carbon dioxide and water, recovering the permeability of the formations. Ultra-low contamination, low impairment to the formations can be achieved using biological enzymes. This paper introduces a dynamic model by which biological enzymes degrading the temporary bridging and plugging agents. Constructed using “steady equilibrium” theory, this model offers a way with which the degradation rate of the temporary bridging and plugging agents can be determined and controlled.

关 键 词：完井液 储集层 临时性封堵 生物酶可解堵钻井液 环境保护 

分 类 号：TE254.3[石油与天然气工程—油气井工程]