[1]陈民锋,秦立峰,荣金曦,等.低渗透应力敏感储层衰竭开发产量递减规律研究[J].复杂油气藏,2022,15(03):78-83.[doi:10.16181/j.cnki.fzyqc.2022.02.014]
 CHEN Minfeng,QIN Lifeng,RONG Jinxi,et al.Production decline law of low permeability stress-sensitive reservoir during depletion development[J].Complex Hydrocarbon Reservoirs,2022,15(03):78-83.[doi:10.16181/j.cnki.fzyqc.2022.02.014]
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低渗透应力敏感储层衰竭开发产量递减规律研究()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
15卷
期数:
2022年03期
页码:
78-83
栏目:
油气开发
出版日期:
2022-10-25

文章信息/Info

Title:
Production decline law of low permeability stress-sensitive reservoir during depletion development
作者:
陈民锋12秦立峰2荣金曦2王兆琪2
1. 中国石油大学(北京)油气资源与探测国家重点实验室,北京102249;2. 中国石油大学(北京)石油工程学院,北京102249
Author(s):
CHEN Minfeng12QIN Lifeng2RONG Jinxi2WANG Zhaoqi2
1.State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum (Beijing),Beijing 102249,China;2.College of Petroleum Engineering in China University of Petroleum(Beijing),Beijing 102249,China
关键词:
应力敏感非稳态不等距差分压力分布产量递减
Keywords:
stress sensitivitytransient flownon-isometric differencepressure distributionproduction decline
分类号:
TE348
DOI:
10.16181/j.cnki.fzyqc.2022.02.014
文献标志码:
A
摘要:
准确分析和预测应力敏感储层非稳态条件下的产量变化规律,对高效开发此类油气藏具有重要作用。根据压力敏感储层基本特点,建立相应的不稳定渗流数学模型;在求解过程中采用不等距差分格式和显式处理渗透率的方法,得到每个时间步的高阶差分线性方程组;在证明差分方程组的数值稳定性和收敛性的基础上,采用追赶法求解得到储层中压力分布。根据衰竭开发过程中生产井的产量完全来源于地层的弹性能这一特点,利用地层压力分布求解生产井的产量。研究表明:在不稳定渗流阶段,不同应力敏感系数储层的压力分布差别较小,应力敏感系数大的储层渗流阻力大,产量小;在边界控制流阶段,无因次规整化产量与无因次时间变化关系呈现加速下降的趋势。QC气藏实例分析表明,考虑应力敏感条件的储层,前期不稳定渗流阶段产量相对较大,递减较快,是重要的生产阶段,所述方法可以简便准确地求解应力敏感条件下开发全过程的产量变化动态。
Abstract:
The production decline law of stress-sensitive reservoirs under unsteady conditions,which is accurately analyzed and predicted,plays an important role in the efficient development of such reservoirs. Based on the basic characteristics of the pressure-sensitive reservoir,the corresponding unstable seepage mathematical model is established. In the solution process,the unequal interval difference scheme and the method of explicitly dealing with the permeability are used to obtain the high-order difference linear equation system for each time step. Based on the numerical stability and convergence of the difference equations,the pressure distribution in the reservoir is solved by the method of catching up. According to the characteristic that the production of producing wells in the process of depletion development is completely derived from the elastic energy of the formation,the production of production wells is calculated by using the distribution of formation pressure. The research shows that in the stage of unstable seepage,the pressure distribution of reservoirs with different stress sensitivity coefficients has little difference,and the reservoirs with larger stress sensitivity coefficients have larger seepage resistance and lower production. In the stage of boundary control flow,the relationship between dimensionless normalized production and dimensionless time variation shows an accelerated downward trend. The case analysis of the QC gas reservoir shows that,considering the stress-sensitive condition of the reservoir,the production in the early unstable seepage stage is relatively large,and the decline is fast,which is an important production stage. The method presented in this paper can easily and accurately solve the production change dynamics in the whole development process under stress-sensitive conditions.

参考文献/References:

[1]李传亮.渗透率的应力敏感效应分析方法[J].新疆石油地质,2006,27(3):348-350.
[2] 郭平,张俊,杜建芬,等.采用两种实验方法进行气藏岩心应力敏感研究[J].西南石油大学学报(自然科学版),2007,29(2):7-9.
[3] 郭小哲,周长沙.考虑应力敏感的页岩气藏压裂水平井渗流模型建立与分析[J].长江大学学报(自然科学版),2015,12(5):44-50.
[4] 张波,段志强,薛媛,等.致密气藏气井递减方法研究[J].石油化工应用,2020,39(11):44-47,55.
[5] 刘会会,崔越华,吴优,等.基于分段拟合的致密气藏递减分析方法[J].石油化工应用,2020,39(3):20-24.
[6] OZKENE,RAGHAVANR.Newsolutionsforwell-testanalysisproblems:part2-computationalconside-rationsandapplications[J].SPEFormationEvaluation,1991,6(3):369-378.
[7] 徐梦雅,廖新维,刘姣姣.储层应力敏感性对致密气藏压裂水平井试井分析的影响[J].陕西科技大学学报,2012,30(5):57-61.
[8] 牛丽娟.压力敏感性对低渗透油藏弹性产能影响[J].科学技术与工程,2014,14(3):137-140.
[9] 段永刚,黄诚,陈伟,等.应力敏感裂缝性油藏不稳态压力动态分析[J].西南石油学院学报,2001,23(5):19-22.
[10]孙来喜,李成勇,李成,等.低渗透气藏应力敏感与气井产量分析[J].天然气工业,2009,29(4):74-76.
[11]孙贺东.油气井现代产量递减分析方法及应用[M].北京:石油工业出版社,2013.
[12]田冷,肖聪,顾岱鸿.考虑应力敏感与非达西效应的页岩气产能模型[J].天然气工业,2014,34(12):70-75.
[13]王伟,李阳,陈祖华,等.基于复杂渗流机理的页岩气藏压后数值模拟研究[J].油气藏评价与开发,2020,10(1):22-29.
[14]游良容,张建国,袁继明,等.低渗透气田产量递减评价方法研究[J].重庆科技学院学报(自然科学版),2017,19(2):29-32.
[15]杨金辉,李立,李钟洋,等.滑脱和应力敏感效应对页岩气开发动态影响的数值模拟研究[J].石油钻探技术,2017,45(1):83-90.

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备注/Memo

备注/Memo:
收稿日期:2021-04-23;改回日期:2021-08-03。
第一作者简介:陈民锋(1971—),博士,副教授,主要从事油田开发系统理论方法和提高采收率技术研究工作。E-mail:cmfllp96@126.com。
更新日期/Last Update: 2023-08-28