榆林气田污水回注井极限注入能力预测分析  

Prediction of Limit Water Injection Capacity of Sewage Injection Wells in Yulin Gas Field

作　　者：王瑞[1,2] 陈子豪[1] 赵发寿 游家庆 江丰 白海涛 张瑞超[1] Wang Rui;Chen Zihao;Zhao Fashou;You Jiaqing;Jiang Feng;Bai Haitao;Zhang Ruichao(Xi’an University of Petroleum,College of Petroleum Engineering;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University);Changbei Operating Company,PetroChina Changqing Oilfield Company;NO.11 Oil Production Plant,PetroChina Changqing Oilfield Company)

机构地区：[1]西安石油大学石油工程学院 [2]油气藏地质及开发工程国家重点实验室(西南石油大学) [3]中国石油长庆油田公司长北项目部 [4]中国石油长庆油田分公司第十一采油厂

出　　处：《油气田环境保护》2023年第5期20-26,共7页Environmental Protection of Oil & Gas Fields

基　　金：油气藏地质及开发工程国家重点实验室(西南石油大学)开放基金课题“深层页岩气藏气体吸附平衡诱导下的基质孔隙变形研究”(PLN2021-24);西安石油大学青年科研创新团队(2019QNKYCXTD04);国家自然科学基金(51374172)资助。

摘　　要：气田生产为了减少气田采出水对地表环境的污染,及补充气藏能量,将污水进行沉淀、过滤等处理后,常回注至废弃气井或专门的回注井。文章以容积法和渗流法两种方法,分别建立模型,对气田回注井的极限注入量、剩余可注入量、可回注年限进行预测,以榆林气田某区块两口污水回注井为例,选用回注井储层物性、回注井回注动态数据,进行计算和验证,并对比了两种预测结果。研究结果明确了气田污水回注井回注特征与规律,为提升回注工艺的应用效果提供了相应的理论依据。To reduce the pollution of gas field produced water to the surface environment and to replenish the energy of the gas reservoir,the wastewater is often injected back into the abandoned gas wells or specialized reinjection wells after precipitation and filtration treatment.In the article,two methods,volumetric method and seepage method,are used to establish models to predict the limiting injection volume,remaining injectable volume,and years of reinjection of gas field reinjection wells.Taking two sewage reinjection wells in a block of Yulin Gas Field as an example,the data on reservoir properties of reinjection wells and reinjection dynamics of reinjection wells were chosen to calculate and validate,and the results of the two kinds of predictions were compared.The research results clarify the characteristics and laws of gas field sewage reinjection well reinjection,and provide corresponding theoretical basis for improving the application effect of reinjection process.

关 键 词：榆林气田 污水回注 极限注入能力 Hall模型 

分 类 号：X703.1[环境科学与工程—环境工程] TE992.2[石油与天然气工程—石油机械设备]