A Practical Method for Determining Reasonable Pressure Drawdown of Horizontal Well After Breakthrough With Bottom-Water Condition

2004 ◽  
Author(s):  
D. Zhou ◽  
T. Jiang ◽  
J. Feng ◽  
W. Bian ◽  
Y. Liu ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Practical Method ◽  
Water Condition

Optimum Stinger Length For a Horizontal Well In a Bottom Water Drive Reservoir

10.2118/98-19 ◽  
1998 ◽  
Author(s):  
P. Permadi ◽  
W. Wibowo ◽  
J. Erickson
Keyword(s):  
Horizontal Well ◽  
Bottom Water

A Semi-Analytical Model for Predicting Horizontal Well Performances in Fractured Gas Reservoirs With Bottom-Water and Different Fracture Intensities

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Yongsheng Tan ◽  
Haitao Li ◽  
Xiang Zhou ◽  
Beibei Jiang ◽  
Yongqing Wang ◽  
...  
Keyword(s):  
Porous Medium ◽  
Horizontal Well ◽  
Bottom Water ◽  
Flow Model ◽  
Numerical Solutions ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
New Model ◽  
Well Completion ◽  
Wellbore Pressure

Numerical simulation and prediction studies on horizontal well performances in gas reservoir are foundation for optimizing horizontal well completion process. To gain more understanding on this theory, a steady-state reservoir model coupling with wellbore is developed in the fractured gas reservoirs with bottom-water and different fracture intensities to predict the horizontal well performances. Based on the equivalent flow assumption, the fractured porous medium is transformed into anisotropic porous medium so that the gas reservoir flow model can be developed as a new model that incorporates formation permeability heterogeneity, reservoir anisotropy, and gas reservoir damage. The wellbore flow model which considers pressure drops in the tubing is applied. We compare this paper model solutions for inflow profile along the well to the numerical solutions obtained from a commercial simulator (ECLIPSE 2011), and the result shows a very good agreement. Moreover, sensitive analysis, in terms of various linear densities of fractures, matrix permeability, fracture width, and wellbore pressure drop, is implemented. The results show that the new model developed in this study can obtain a more practical representation to simulate the horizontal wells performance in fractured gas reservoir with different fracture intensities and bottom-water, thus can be used to optimize the parameters in horizontal well completion of fractured gas reservoirs with different fracture intensities and bottom-water.

Research of Water Flooded Performance and Pattern in Horizontal Well With Bottom-Water Drive Reservoir

2004 ◽  
Author(s):  
D. Zhou ◽  
T. Jiang ◽  
J. Feng ◽  
W. Bian ◽  
Y. Liu ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Bottom Water

Research on Variance Principle of Critical Producing Pressure Drop of Horizontal Well in Gas Reservoir with Bottom Water

2012 ◽  
Vol 616-618 ◽  
pp. 674-679
Author(s):  
Ke Liu Wu ◽  
Xiang Fang Li ◽  
Xiao Ting Gou
Keyword(s):  
Pressure Drop ◽  
Horizontal Well ◽  
Bottom Water ◽  
Material Balance ◽  
Sweep Efficiency ◽  
Gas Reservoir ◽  
Vertical Permeability ◽  
Balance Principle ◽  
Water Viscosity ◽  
The Difference

According to material balance principle, gas/water bearing height in gas reservoir with bottom water could be deduced. Additionally, sweep efficiency could be approximately determined, then based on the equivalent flowing resistance method and critical vertical velocity of bottom water drive, computational model of Critical Producing Pressure Drop during the development of gas reservoir with bottom water could be derived. Therefore, the variance principle of Critical Producing Pressure Drop of horizontal well can be expressed quantitatively, and this paper also analyzes that it is influenced by the ratio of vertical permeability to horizontal permeability, the difference between water and gas density, the ratio of water viscosity to gas viscosity and height for bottom water coning. The results could provide guidelines for the determination of reasonable producing pressure drop and producing rate of horizontal well in gas reservoir with bottom water.

Productivity Analysis of Transverse Horizontal Well Commingling in Stripped Gas Reservoir with Bottom Water

2013 ◽  
Vol 868 ◽  
pp. 657-663
Author(s):  
Wen Qi Zhao ◽  
Lian Yu ◽  
Lun Zhao ◽  
Li Chen ◽  
Song Chen
Keyword(s):  
Gas Flow ◽  
Horizontal Well ◽  
Bottom Water ◽  
Constant Pressure ◽  
Production Condition ◽  
Productivity Analysis ◽  
Gas Reservoir ◽  
Constant Rate ◽  
Seepage Theory ◽  
The Green Function

Banded gas reservoir with bottom water is a typical gas reservoir. Based on the development characteristics of formation, the further study on commingling production by transverse horizontal well is done, and also combined with seepage theory including the Green function, Duhamel method etc. the dimensionless definitions of relative parameter are given. Whats more, the derivation and formula of production can be achieved respectively under the constant pressure condition and constant production condition. Meanwhile, take commingling production with three banded gas layers for example. Whether the initial pseudo pressure for these layers are equal or not, in both of these cases, the variation curve of gas productivity under the constant pressure and constant rate conditions is described separately. And the law of variation of gas flow backward for some layer when the physical properties of these layers are significantly different.

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