灯影组二段底水气藏试采特征及气井合理配产研究——以安岳气田GS1井区为例  

Research on the Trial Production Characteristics and Production Allocation ofGas Wells in the Gas Reservoir of Deng 2 Member with Bottom Water:A Case Study of Gas Reservoir of GS1 Well Block,Anyue Gas Field

作　　者：王维一 赵文韬 吴洪波[1] 聂权 韩琦 胡浩[1] 江林[1] 欧志鹏 江俊 WANG Weiyi;ZHAO Wentao;WU Hongbo;NIE Quan;HAN Qi;HU Hao;JIANG Lin;OU Zhipeng;JIANG Jun(Shunan Gas Mine,PetroChina Southwest Oil&Gasfield Company,Luzhou,Sichuan 646000,China;Exploration and Development Research Institute,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610041,China)

机构地区：[1]中国石油西南油气田公司蜀南气矿 [2]中国石油西南油气田公司勘探开发研究院

出　　处：《钻采工艺》2024年第5期179-184,共6页Drilling & Production Technology

基　　金：西南油气田分公司蜀南气矿科研项目“GS1井区灯二气藏气井生产特征及对策研究”(编号:2022012)。

摘　　要：四川盆地安岳气田GS1井区灯影组二段气藏为大型低幅宽缓构造、下部发育具统一气水界面底水的裂缝—孔洞型气藏,非均质性较强,开发过程中面临底水沿高角度裂缝、孔洞推进风险。为了提高GS1井区灯影组二段底水气藏开发效果,文章通过气藏特征综合研究,储层渗流特征、井区试采动态特征总结,综合考虑储层展布、气水关系将气藏划分四类水侵风险区,建立水侵机理模型并进行数值模拟,预测区域水侵模式。结合国内外典型缝洞型底水气藏研究,设计GS1井区底水气藏采气速度合理区间1.5%~3%,以延长无水采气期和确保长期稳产为目的,制定四类水侵风险区气井配产,有效指导气藏开发生产并获得了阶段性成效,为同类裂缝—孔洞型底水气藏的开发生产提供了有益指导。The second member of Dengying Formation in the GS1 well area of Anyue Gas Field in the Sichuan Basin is a large scale,low-magnitude,wide flat structure gas reservoir.The gas reservoir has strong heterogeneity,facing the risk of bottom water advancing high angle fractures and cavities during the development process.This paper establishes a water invasion risk zone classification through comprehensive research on gas reservoir characteristics,reservoir percolation characteristics,and well area trial production dynamic characteristics,reservoir distribution,and gas water contact relationships.A water invasion mechanism model is established for different risk zones,and numerical simulations are conducted to predict and summarize the regional water invasion mode.Based on the research of typical fractured-vuggy bottom water gas reservoirs at home and abroad,a reasonable range of gas production rate of 1.5%to 3%is designed,with the aim of extending the waterless gas production period and ensuring long-term stable production.The production allocation of gas wells in four types of water invasion risk areas ranges,effectively guiding the development and production of gas reservoirs,providing useful guidance for the development and production of similar fractured-vuggy type bottom water gas reservoirs.

关 键 词：底水气藏 水侵 机理模型 合理配产 

分 类 号：TE37[石油与天然气工程—油气田开发工程]