高压注水井解堵体系研制及实验分析  

Development and experimental analysis of plugging removal system for high pressure water injection wells

作　　者：郭奎[1] 李燕承 魏飞[1] 董小刚[1] GUO Kui;LI Yan-cheng;WEI Fei;DONG Xiao-gang(Jingbian Oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yulin 718500,China)

机构地区：[1]延长油田股份有限公司靖边采油厂,陕西榆林718500

出　　处：《化学工程师》2021年第6期42-45,共4页Chemical Engineer

基　　金：国家自然科学基金重点项目(No.41630312);延长油田科研项目(No.KT2016SFW0001)。

摘　　要：为解决油层保护方面的相关问题,对高压注水井解堵体系进行了研究。通过对地层污染堵塞原因进行系统分析,明确污染物后,选取ClO2溶液为实验解堵体系的研究对象。通过聚合物分解降粘实验和微生物菌体灭菌实验结果表明,SRB硫酸盐还原菌前提下,20mg·L^(-1)浓度的ClO2溶液反应15min即可以达到99.9%的最优灭菌率。TGB细菌前提下最低限度的5mg·L^(-1) ClO2溶液经过15min反应亦可达到100%的最优杀生率。当选取20mg·L^(-1)浓度药剂,经过120min后达到最佳处理效果为85%。In order to study the related problems of reservoir protection and help the development of high pressure water injection well plugging removal system.Through the systematic analysis of the causes of formation pollution and plugging,the ClO2 solution is selected as the research object of the experimental plugging removal system.The experiments of viscosity reduction by polymer decomposition and bacteria sterilization were carried out.The results showed that the optimal sterilization rate of SRB was 99.9%under the condition of SRB,20mg·L^(-1) ClO2 concentration for 15min.Under the premise of TGB bacteria,the minimum concentration of ClO2 solution was 5mg·L^(-1),and the optimal killing rate was 100%after 15min reaction.When the concentration of 20mg·L^(-1) was selected,the best treatment effect was 85%after 120min.

关 键 词：油田注水 储层解堵 储层酸化 实验分析 

分 类 号：TE242[石油与天然气工程—油气井工程]