蓬探1井区灯二段底水气藏水侵机理  

Water Invasion Mechanism of the Second Member of Dengying Formation in Pengtan 1 Well Area Bottom Water Gas Reservoirs

作　　者：李娟[1] 汪周华[2] 欧家强 李钊名 杨洋[1] 吴金川 李松岑 LI Juan;WANG Zhou-hua;OU Jia-qiang;LI Zhao-ming;YANG Yang;WU Jin-chuan;LI Song-cen(North Part of Central Sichuan Gas Production Management of PetroChina Southwest Oil and Gasfield Company,Suining 629000,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油天然气股份有限公司西南油气田分公司川中北部采气管理处,遂宁629000 [2]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《科学技术与工程》2024年第23期9729-9736,共8页Science Technology and Engineering

基　　金：国家科技重大专项(2016ZX05015002)。

摘　　要：蓬探1井区灯二段气藏属于典型的超深层碳酸盐岩底水气藏,水侵是影响气藏开发效果的重要问题。目前气藏处于开发早期评价阶段,对气藏水侵机理认识模糊,制约了气藏开发技术政策的制定。基于气藏现有动静态资料,利用数值模拟手段建立不同开发区单井机理模型,开展水侵模式预判、水侵动态主控因素分析。研究表明,蓬探1井区不同类型储层隔夹层发育,隔夹层遮挡作用显著,水侵模式总体表现为水锥型与水脊型;配产比与避水高度分别是影响两类开发区水侵程度与开发效果的主控因素;对水侵机理认识为蓬探1井区开发技术政策制订提供了技术支撑。The gas reservoir of the second member of the Dengying Formation in Pengtan 1 well area is a typical ultra-deep carbonate bottom water gas reservoir,water invasion is an important issue affecting the effectiveness of gas reservoir development.The gas reservoir is currently in the early stages of evaluation for development,lack of understanding of water invasion mechanisms in gas reservoirs makes it difficult to develop a development strategies.Based on the existing production data and geological data of the gas reservoir,the mechanism model of single wells in different development zones was established by numerical simulation,to predict the way water invasin and to analyze the key factors affecting water invasion.Resalts show that different types of reservoir barrier layer in the Pengtan 1 well area are developed,the phenomenon of water being blocked by the barrier layer is significant,the overall manifestation of water invasion mode is water cone type and water crest type.The production allocation and the height of water avoidance are the main controlling factors affecting the degree of water invasion and the development effect of the two types of development areas.The understanding of water invasion mechanism obtained by thesis analysis provides technical support for the development strategies of Pengtan 1 well area.

关 键 词：底水气藏 水平井 合理配产 避水高度 水平段长度 

分 类 号：P618.1[天文地球—矿床学] TE319[天文地球—地质学]