WELL TESTING ANALYSIS FOR HORIZONTAL WELL WITH CONSIDERATION OF THRESHOLD PRESSURE GRADIENT IN TIGHT GAS RESERVOIRS

A fundamental solution for homogeneous reservoir in infinite space is derived by using the point source function with the consideration of the threshold pressure gradient. The fundamental solution of the continuous point source function is then derived based on the Green function. Various boundary c...

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Bibliographic Details
Published inJournal of hydrodynamics. Series B Vol. 24; no. 4; pp. 561 - 568
Main Authors GUO, Jing-jing, ZHANG, Su, ZHANG, Lie-hui, QING, Hairuo, LIU, Qi-guo
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.09.2012
Springer Singapore
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University,Chengdu 610500, China%Central Sichuan Mining District, PetroChina Southwest Oil and Gas Field Company, Suining 629000, China%Department of Geology, University of Regina, Regina, SK S4S 0A2, Canada
Subjects
Derivatives
Engineering
Engineering Fluid Dynamics
horizontal well
Horizontal wells
Hydrology/Water Resources
Mathematical models
non-linear gas flow
Numerical and Computational Physics
Point sources
Pressure gradients
Reservoirs
Simulation
threshold pressure gradient
Thresholds
tight gas reservoir
井底压力
启动压力梯度
均质油藏
气体流动
水平井
点源函数
致密气藏
试井分析
horizontal well
tight gas reservoir
non-linear gas flow
threshold pressure gradient
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Summary:A fundamental solution for homogeneous reservoir in infinite space is derived by using the point source function with the consideration of the threshold pressure gradient. The fundamental solution of the continuous point source function is then derived based on the Green function. Various boundary conditions of the reservoirs are considered for this case and the corresponding solutions are obtained through the mirror image reflection and the principle of superimposition. The line source solution is obtained by integration. Subsequently, the horizontal-well bottom hole pressure response function for a non-linear gas flow in the homogeneous gas reservoir is obtained, and the response curve of the dimensionless bottom hole pressure and the derivative for a horizontal well in the homogeneous gas reservoir are obtained. In the end, the sensitivities of the relevant parameters are analyzed. The well test model presented in this paper can be used as the basis of the horizontal well test analysis for tight gas reservoirs.
Bibliography:31-1563/T
A fundamental solution for homogeneous reservoir in infinite space is derived by using the point source function with the consideration of the threshold pressure gradient. The fundamental solution of the continuous point source function is then derived based on the Green function. Various boundary conditions of the reservoirs are considered for this case and the corresponding solutions are obtained through the mirror image reflection and the principle of superimposition. The line source solution is obtained by integration. Subsequently, the horizontal-well bottom hole pressure response function for a non-linear gas flow in the homogeneous gas reservoir is obtained, and the response curve of the dimensionless bottom hole pressure and the derivative for a horizontal well in the homogeneous gas reservoir are obtained. In the end, the sensitivities of the relevant parameters are analyzed, The well test model presented in this paper can be used as the basis of the horizontal well test analysis for tight gas reservoirs.
horizontal well, non-linear gas flow, threshold pressure gradient, tight gas reservoir
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1001-6058
1878-0342
DOI:10.1016/S1001-6058(11)60278-3