WSC气藏水侵特征及其对改建储气库的影响评价研究  

Study on Water Invasion Characteristics of WSC Gas Reservoir and Its Impact on Reconstruction of Gas Storage

作　　者：卿雅兰 罗毓明 陈黎[2] 张伟[2] 周道勇 白雪媛 Qing Yalan;Luo Yuming;Chen Li;Zhang Wei;Zhou Daoyong;Bai Xueyuan(School of Petroleum Engineering,Chongqing University of Science and Technology,Chongqing 401331;Chongqing Gas Mine,Southwest Oil&Gasfield Company,Chongqing 400021)

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆401331 [2]中国石油西南油气田分公司重庆气矿,重庆400021

出　　处：《中外能源》2024年第7期60-67,共8页Sino-Global Energy

基　　金：重庆科技学院研究生科技创新项目“万顺场石炭系气藏改建储气库库容与工作气量计算”(编号:YKJCX2220122)。

摘　　要：对于有水气藏改建储气库前期评价而言,水侵特征及其对建库参数设计和储气库运行动态的影响是研究的重点内容,储气库注采井位部署、有效库容、调峰能力及储气库运行参数设计必须以水侵特征研究成果为基础。根据WSC气藏的动静态资料,从产水气井产出水水性分析与水淹时间识别、水侵量计算、气藏产水量预测等方面分析气藏的水侵特征和宏观水侵规律,评价水体的活跃性。基于建库参数和气藏三维地质模型,采用气藏数值模拟方法,分别从上限压力、井位部署、采气速度和库容损失方面模拟研究储气库的运行动态及水侵对建库的影响。并提出相应对策:将储气库采气井部署在海拔-2550m以上的构造高部位,控制储气库上限压力不超过原始地层压力,在采气规模3000×10^(4)m^(3)/d、34口井平均单井产量为88.24×10^(4)m^(3)/d的供气条件下,可有效控制水侵对储气库运行的危害。For the preliminary evaluation of water-bearing gas reservoirs to be converted into gas storage,the water invasion characteristics and their influence on the design of parameters of the gas storage construction and the operation of the gas storage are the key contents of the research.The well location deployment,effective storage capacity,peaking capacity,and operation parameter design of gas storage must be based on the research results of water invasion characteristics.According to the dynamic and static data of the WSCgas reservoir,the waterinvasion characteristics and macroscopic water invasion rule of the gas reservoir are analyzed from the aspects of water property analysis of water-producing gas wells,identification of flooding time,calculation of water invasion volume,and prediction of water production in gas reservoirs,and the activity of water bodies is evaluated.Based on gas storage construction parameters and a 3D geological model of the gas reservoir,the numerical simulation method of the gas reservoir is used to simulate the operating dynamics of the gas storage and the influence of water invasion on gas storage construction from the aspects of upper limit pressure,well location deployment,gas production rate,and storage capacity loss.Corresponding counter-measures are put forward:the gas production wells in the gas reservoir should be deployed at the high structural position above-2550m above sea level,and the upper limit pressure of the gas storage is controlled not to exceed the original formation pressure.Under the gas supply condition of 3000×10^(4)m^(3)/d gas production scale and 88.24×10^(4)m^(3)/d average single well production of 34 wells,the harm of water invasion to the operation of the gas storage can be effectively controlled.

关 键 词：有水气藏 改建储气库 水侵特征 井位部署 上限压力 采气速度 

分 类 号：TE37[石油与天然气工程—油气田开发工程] TE972