不同类型有水气藏数值模拟历史拟合方法研究  

History-matching methods for numerical simulation on different types of gas reservoirs with edge and bottom water

作　　者：李瑶 朱国[1] 汪旭东 邓淇文 马国文 LI Yao;ZHU Guo;WANG Xudong;DENG Qiwen;MA Guowen(No.2 Gas Production Plant,Sinopec Southwest Oil&Gas Company,Langzhong,Sichuan 637400,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]中国石化西南油气分公司采气二厂,四川阆中637400 [2]油气藏地质及开发工程全国重点实验室·西南石油大学,四川成都610500

出　　处：《天然气技术与经济》2025年第2期7-14,共8页Natural Gas Technology and Economy

基　　金：中国石化西南油气分公司科研项目“元坝气田气井水侵及剩余气分布规律模拟研究”(编号:34450000-23-ZC0604-0017)。

摘　　要：针对四川盆地碳酸盐岩边底水气藏受水侵影响,使得该类气藏在运用数值模拟方法开展生产井历史拟合过程中存在产水井产水量拟合难、井口油压拟合难的问题,研究形成了一套分别针对调整相渗型、调整隔夹层型以及添加水体型产水气井历史拟合方法。研究结果表明:①对于气井储层水体规模及气水界面位置确定,模型计算的气井见水时间较实际存在偏差,但调整渗透率对见水时间无影响的气井,主要通过调整相渗曲线拟合,该种产水气井拟合方式即为调整相渗型;②对于气井钻井资料表明其储层中不存在水体,但其邻井产水的生产井,主要通过添加隔夹层的方法拟合,该种产水气井拟合方式即为调整隔夹层型;③对于气井储层中不存在水体,但是气井实际生产过程中产水,并且每万立方米气产水量普遍大于10 m3的产水气井,通过在模型中添加水体来拟合,水体体积由物质平衡法确定,该种产水气井拟合方式即为添加水体型。结论认为:上述三种产水气井历史拟合方法应用于元坝气田二叠系长兴组碳酸盐岩有水气藏取得了良好的效果。Influenced by water invasion,most carbonate gas reservoirs with edge and bottom water,Sichuan Basin,are confronted with history-matching difficulties of water production and wellhead tubing pressure in gas producers by means of numerical simulation.Thus,a set of history-matching methods were individually developed for three modes of water-producing gas wells with relative permeability adjustment,barrier and interbed adjustment,and waterbody supplement.Results show that(i)as for determining both waterbody size and gas-water contact in reservoirs,the water breakthrough time calculated from the simulation is deviated from the real time.However,the matching is realized for certain gas producers whose water breakthrough time is not conditioned by adjusting relative permeability curve.And this matching mode is called as relative permeability adjustment;(ii)for a few wells without water in reservoirs but with water in their neighboring wells,the matching is implemented by adding barrier and interbed.This matching mode is named as barrier and interbed adjustment;and(iii)for those wells without waterbody in reservoirs but water production generally over 10 cubic meters per ten thousand cubic meters of gas production in the actual production,the matching is realized by supplementing waterbody.And water bulk is confirmed by the way of material balance.This matching mode is known as waterbody supplement.In conclusion,these three history-matching methods for water-producing gas wells present remarkable effect after their application to Changxing carbonate gas reservoirs with edge and bottom water in Yuanba gasfield.

关 键 词：碳酸盐岩 边底水气藏 数值模拟 历史拟合 元坝气田 

分 类 号：TE37[石油与天然气工程—油气田开发工程]