Formation Pressure Analysis of Water-Bearing Tight Gas Reservoirs with Unsteady Low-Velocity Non-Darcy Flow

被引：1
|
作者：
Song, Hongqing [1 ]
Yue, Ming [1 ]
Zhu, Weiyao [1 ]
He, Dongbo [2 ]
Yi, Huaijian [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China
[2] Res Inst Petrol Explorat & Dev Petro, Beijing 100083, Peoples R China
来源：
ADVANCED MANUFACTURING SYSTEMS, PTS 1-3 | 2011年 / 201-203卷
关键词：
Formation Pressure; Gas Reservoirs; Low-Velocity Non-Darcy; Unsteady Flow; Threshold Pressure Gradient (TPG); LOW-PERMEABILITY RESERVOIRS;
D O I：
10.4028/www.scientific.net/AMR.201-203.399
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous media containing water is the prerequisite of existence of threshold pressure gradient (TPG) for gas flow. Based on theory of fluid mechanics in porous medium considering TPG, the non-Darcy flow mathematical model is established for formation pressure analysis of water-bearing tight gas reservoirs. It could provide semi-analytic solution of unsteady radial non-Darcy flow. According to the solution of unsteady radial non-Darcy flow, an easy and accurate calculation method for formation pressure analysis is presented. It can provide theoretical foundation for development design of water-bearing tight gas reservoirs. The analysis of calculation results demonstrates that the higher TPG is, the smaller formation pressure of water-bearing tight gas reservoirs spreads. In the same output, the reservoir sweep of non-Darcy gas flow is larger than that of non-Darcy liquid flow. And the pressure drop near wellbore is smaller than that of non-Darcy liquid flow, which is different from Darcy flow.
引用
收藏
页码：399 / +
页数：2
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