Unsteady-state filtration for condensate oil-gas flowand drawdown curves

doi:10.7623/syxb200602020

Editorial office of ACTA PETROLEI SINICA ›› 2006, Vol. 27 ›› Issue (2): 93-97.DOI: 10.7623/syxb200602020

• Oil Field Development • Previous Articles Next Articles

Unsteady-state filtration for condensate oil-gas flowand drawdown curves

Li Xiaoping¹, Zhao Tianfeng²

1. Petroleum Engineering Institute, Daqing Petroleum Institute, Daqing 163318, China;
2. Dalian University of Technology, Dalian 116024, China

Received:2005-03-29 Revised:2005-08-10 Online:2006-03-25 Published:2010-05-21

凝析油-气不稳态渗流问题及其压降曲线

李笑萍¹, 赵天奉²

1. 大庆石油学院石油工程学院, 黑龙江, 大庆, 163318;
2. 大连理工大学, 辽宁, 大连, 116024

作者简介:李笑萍,女,1949年10月生,1975年毕业于东北石油学院,现为大庆石油学院教授,主要从事油气藏渗流与试井研究.E-mail:LXPDQSYXY@163.com
基金资助:
国家重点科技攻关项目(970506-03)

Abstract

Abstract: On the basis of original phase state data of condensate gas field in Tarim Basin,a filtration equation of condensate oil-gas flow in porous medium was built.In consideration of phase-state redistribution of condensate oil-gas in well bore,a novel model of unsteady-state filtration for oil-gas two-phase flow in various complex gas reservoirs was established.The analytic solutions of condensate oil-gas two-phase pseudo-pressure under three kinds of typical boundary conditions for condensate gas reservoir were obtained,and the drawdown curve for bottom hole was drawn.An applied example of condensate gas filtration was given.

Key words: condensate gas reservoir, condensate oil-gas phase-state, unsteady filtration, complex reservoir, pressure analytic solution, mathematical model, drawdown curve

摘要： 根据凝析气相态特征,采用凝析气田的原始相态资料,研究了凝析气在相态转换过程中储层内气体中可凝缩液体的体积分数、质量分数与气藏压力的关系及具体计算方法,建立了凝析油-气在多孔介质中的渗流方程.在考虑到井筒内存在凝析油-气相态重分布的情况下,建立了凝析气在复杂气藏内油-气两相不稳态渗流问题的新模型,求出了3种典型气藏外边界条件下的凝析油-气两相拟压力分布解析解,并绘出了井底压降曲线,给出了应用实例.

关键词: 凝析气藏, 凝析油-气相态, 不稳定渗流, 复合气藏, 压力解析解, 数学模型, 压降曲线

CLC Number:

TE312

Li Xiaoping, Zhao Tianfeng. Unsteady-state filtration for condensate oil-gas flowand drawdown curves[J]. Editorial office of ACTA PETROLEI SINICA, 2006, 27(2): 93-97.

李笑萍, 赵天奉. 凝析油-气不稳态渗流问题及其压降曲线[J]. 石油学报, 2006, 27(2): 93-97.

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Unsteady-state filtration for condensate oil-gas flowand drawdown curves

凝析油-气不稳态渗流问题及其压降曲线

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