水驱气藏水侵及开发效果主控因素数值模拟研究  

Numerical simulation study on main controlling factors of water invasion and development effect of water-driven gas reservoirs

作　　者：范昭宇 宋兆杰[2] 朱绍鹏 张骞 韩鑫 周鑫 FAN Zhaoyu;SONG Zhaojie;ZHU Shaopeng;ZHANG Qian;HAN Xin;ZHOU Xin(CNOOC China Limited Hainan Company,Haikou 570300,China;Unconventional Petroleum Research Institute,China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中海石油(中国)有限公司海南分公司,海南海口570300 [2]中国石油大学(北京)非常规油气科学技术研究院,北京102249

出　　处：《断块油气田》2025年第1期141-146,共6页Fault-Block Oil & Gas Field

基　　金：中国海洋石油有限公司综合科研项目“深水砂岩油气田高效开发关键技术(一期)”(KJZH-2024-2201)。

摘　　要：水侵是水驱气藏开发过程中面临的主要问题之一。L1气田是优质大型深水水驱气田,明确影响气藏水侵和开发效果的主控因素,对于气田的高效开发有重要意义。因此,在明确气田各井水侵风险的基础上,开展了考虑多影响因素的气藏水侵数值模拟,明确了影响水驱气藏水侵和开发效果的主控因素。结果表明:L1气田存在较高见水风险;水体类型和水体倍数为影响气藏水侵和开发效果的Ⅰ类主控因素;井型和K_(z)/K_(r)(储层垂向渗透率与平面渗透率之比)是影响气藏水侵和开发效果的Ⅱ类主控因素;日产量、射开程度、地层倾角为影响气藏水侵和开发效果的Ⅲ类主控因素。在气藏实际开发中,需要优先考虑Ⅰ类和Ⅱ类主控因素的影响。该研究结果可指导气田后续见水预测及生产制度优化。Water invasion is one of the main problems in the development of water-driven gas reservoirs.Gas field L1 is a high-quality large-scale deep-water water-driven gas field.Clarifing the main controlling factors affecting the water invasion and development effect of gas reservoirs is of great significance for the efficient development of gas fields.Therefore,on the basis of clarifying the water invasion risk of each well in the gas field,a numerical simulation of gas reservoir water invasion considering multiple influencing factors was carried out,and the main controlling factors affecting the water invasion and development effect of water-driven gas reservoirs were clarified.The results show that there is a high risk of water breakthrough in gas field L1.Water body type and water body multiple are the typeⅠmain controlling factors affecting the water invasion and development effect of gas reservoirs.Well type and K_(z)/K_(r)(ratio of reservoir vertical permeability to its plane permeability)are the typeⅡmain controlling factors affecting the water invasion and development effect of gas reservoirs.Daily production,perforation degree and formation dip angle are the typeⅢmain controlling factors affecting the water invasion and development effect of gas reservoirs.In the actual development of gas reservoirs,it is needed to give priority to the influence of typeⅠand typeⅡmain controlling factors.The research results can guide the subsequent water breakthrough prediction and production system optimization of gas fields.

关 键 词：水驱气藏 水侵 开发效果 主控因素 数值模拟 

分 类 号：TE341[石油与天然气工程—油气田开发工程]