气水过渡带内底水凝析气藏数值模拟研究——以吉拉克TⅡ2凝析气藏为例

李世川, 黄召庭, 江同文, 牛玉, 阳建平, 成荣红, 谢伟, 汪斌

doi:10.11764/j.issn.1672-1926.2014.11.1855

天然气地球科学 >

2014 , Vol. 25 >Issue 11: 1855 - 1860

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.11.1855

天然气开发

气水过渡带内底水凝析气藏数值模拟研究——以吉拉克TⅡ2凝析气藏为例

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1.中国石油塔里木油田分公司勘探开发研究院，新疆库尔勒 841000；
2.西南石油大学，四川成都 610500；
3.中国石油塔里木油田分公司，新疆库尔勒 841000

李世川(1966-)，男，重庆万州人，高级工程师，在读博士，主要从事气田开发研究. E-mail：tlmlsc@126.com.

收稿日期: 2013-12-11

修回日期: 2014-05-22

网络出版日期: 2019-09-20

基金资助

国家科技重大专项“高压气藏安全高效开发技术”(编号：2011ZX05015-001)|中国石油天然气股份有限公司重大专项“高压、超高压气田及凝析气田高效开发技术”(编号：2010E-2103-01)联合资助.

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The Numerical Simulation Study of Basal Water Condensate Gas Reservoir in Gas-Water Transition Zone：An Example from TⅡ2 Condensate Gas Reservoir in Jilake Gasfield

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1.Exploration and Development Research Institute,PetroChina Tarim Oilfield Company,Korla 841000,China| 2.Southwest Petroleum University,Chengdu 610500,China| 3.PetroChina Tarim Oilfield Company,Korla 841000,China)

Received date: 2013-12-11

Revised date: 2014-05-22

Online published: 2019-09-20

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摘要

吉拉克TⅡ2底水凝析气藏构造幅度低，非均质性强，气藏顶部存在低电阻气层段，气水关系复杂。结合气藏地质和生产特征，对压汞资料分类评价并归一化处理计算气水过渡带高度，结果表明该气藏总体处于气水过渡带内，为气水过渡带内的底水凝析气藏。在对比各种建立气藏原始饱和度方法的基础上，采用毛细管压力法建立该气藏原始饱和度场并进行数值模拟研究。利用2种方法实现了产水气井的精细模拟：一是考虑饱和顺序对相对渗透率曲线影响，实现主要受可动水影响，初期见水且低产稳产水气井的精细模拟|二是采用局部网格加密准确描述反凝析与底水锥进对近井地带影响，实现主要受底水影响，见水后产水量逐渐增大的气井精细模拟。研究结果表明，这些方法对复杂凝析气藏模拟具有很好的效果，对同类气藏模拟具有重要的参考作用。

关键词： 吉拉克气田; 气水过渡带; 毛细管压力; 饱和顺序; 局部网格加密; 数值模拟

本文引用格式

李世川, 黄召庭, 江同文, 牛玉, 阳建平, 成荣红, 谢伟, 汪斌 . 气水过渡带内底水凝析气藏数值模拟研究——以吉拉克TⅡ2凝析气藏为例[J]. 天然气地球科学, 2014 , 25(11) : 1855 -1860 . DOI: 10.11764/j.issn.1672-1926.2014.11.1855

Abstract

The TⅡ2 basal water condensate gas reservoir in Jilake Gasfield has some characters，i.e.,low amplitude of structure,severe heterogeneity,low resistivity gas horizon in the top of gas reservoir,complex gas-water distribution.Combined with the geology setting and production performance of the gas reservoir,mercury penetration data were classified and handled to calculate the height of gas-water transitional zone,and it is concluded that it is a basal water condensate gas reservoir in gas-water transitional zone.Capillary pressure method was used to establish initial water saturation and to simulate gas reservoir.Two methods were used to delicately simulate gas wells which are producing water.Some wells with low and sustained producing water which were mainly affected by movable water were preferably simulated by considering saturation procedure for relative permeability curve.Some wells which were mainly affected by basal water were finely simulated by LGR to accurately describe retrograde condensation and bottom water coning in near wellbore.The findings indicate that these methods take advantage of simulating complex condensate gas reservoir,so these methods can be applied to other gas reservoirs.

Key words： Jilake Gasfield; Gas-water transitional zone; Capillary pressure; Saturation procedure; Local grid refinement; Numerical simulation

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