气液微气泡驱见效特征及优化调整对策  

Effective characteristics of gas-liquid microbubble flooding and optimization adjustment measures

作　　者：沈焕文[1] 常崇武[1] 马云成[1] 王艳玲[1] 李化斌[1] 范鹏[1] SHEN Huanwen;CHANG Chongwu;MA Yuncheng;WANG Yanling;LI Huabin;FAN Peng(Oil Production Plant 3 of PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China)

机构地区：[1]中国石油长庆油田分公司第三采油厂,宁夏银川750006

出　　处：《石油化工应用》2025年第3期66-70,共5页Petrochemical Industry Application

摘　　要：气液微气泡驱技术具有对不同渗流流度比进行自适应调整的特点,从微观、宏观双向大幅度提高油田采收率。该技术在矿场16个井组历经3.7年试验表明,动态采收率提高2.6%,大幅度挖潜了水驱后未波及的剩余油和残余油。本文通过对见效井气液驱替特征、累计注入量、含水率阶段、采出程度等关键因素系统总结,认为气液驱替特征呈正相关关系,注入3个月(单井累计注入气体地下体积872 m^(3))开始见效,见效比例达83.2%,对采出程度大于30%的井以降液降含水率为主,对低采出、低液量井净增油效果显著。Gas-liquid microbubble flooding technology has the characteristics of self-adaptive adjustment of different seepage mobility ratios,which greatly improves oil recovery from both micro and macro directions.The technology has been tested in 16 well groups in the mine for 3.7 years,which shows that the dynamic recovery ratio has increased 2.6%,and the remaining oil and residual oil that have not been affected after water flooding have been greatly tapped.This paper systematically summarizes the key factors such as gas-liquid displacement characteristics,cumulative injection quantity,water-cut stage and recovery degree of effective wells,and holds that the gas-liquid displacement characteristics are positively correlated.After three months of injection(the cumulative underground volume of gas injected into a single well is 872 m^(3)),the effective ratio is 83.2%.For wells with recovery degree greater than 30%,the main method is to reduce liquid and water content,and the net oil increase effect is remarkable for wells with low recovery and low liquid volume.

关 键 词：气液微气泡驱 见效特征 调整对策 提高采收率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]