Well test interpretation methods and application in deep condensate gas reservoir with low permeability

Huang Xuefeng; Yang Shigang

doi:10.11743/ogg20040319

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Well test interpretation methods and application in deep condensate gas reservoir with low permeability
Vol. 25, Issue 3, Pages: 333-337(2004)
Online First：25 June 2004，

Published：2004
DOI： 10.11743/ogg20040319
稿件说明：

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DOI：

Huang Xuefeng, Yang Shigang. Well test interpretation methods and application in deep condensate gas reservoir with low permeability[J]. 2004, 25(3): 333-337. DOI： 10.11743/ogg20040319.

摘要

针对中原油田濮67、白庙、桥口等深层低渗凝析气藏的相态变化和渗流特征

综合运用考虑孔隙介质吸附、毛细凝聚等物理化学界面效应影响的凝析油气体系相平衡计算方法和凝析油气两相渗流方程

以及通过引入凝析油-气两相拟压力函数和渗流方程线性化处理所得到的均质凝析气藏试井解释方法

探索了适合于中原濮67、白庙、桥口等深层低渗凝析气藏试井资料的常规及现代试井解释方法。经实例分析

证实了孔隙介质吸附及毛细凝聚对试井解释结果有较大影响

一是储层有效渗透率降低;二是表皮系数增大。

Abstract

Considering the phase change and percolation characteristics of deep condensate gas reservoirs with low permeability

such as Pu 67

Baimiao and Qiaokou condensate reservoirs in Zhongyuan oilfield

conventional and modern well test interpretation methods

applicable to these reservoirs

have been developed by integrating phase equilibrium computation process of condensate oil-gas system that take into consideration of physical and chemical interfacial effects

such as pore medium adsorption and capillary condensation

and condensate oil-gas two-phase percolation equations

as well as well test interpretation methods of homogeneous condensate gas reservoirs that are achieved through introducing linearization of condensate oil-gas two phase pseudopressure function and percolation flow equation.A case study of the influences of pore medium adsorption and capillary condensation on well test interpretation results has also been made.