Predicting Pressure Distribution in Irregularly Shaped Reservoirs under Water-drive Conditions

Many analytical methods use radial and rectangular systems to interpret unsteady-state reservoir flow problems. However, there is no information currently available for irregularly shaped water-drive reservoirs. For many practical cases the reservoir drainage shape is too complicated to be approxima...

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Bibliographic Details
Published inJournal of The Japan Petroleum Institute Vol. 35; no. 3; pp. 261 - 273
Main Authors KUO, M. C. T., LIN, C. C., WU, P. Y., WANG, W. L.
Format Journal Article
LanguageEnglish
Published Tokyo The Japan Petroleum Institute 1992
Sekiyu Gakkai
Subjects
Applied sciences
Bounded reservoir
Crude oil, natural gas and petroleum products
Crude oil, natural gas, oil shales producing equipements and methods
Energy
Exact sciences and technology
Fuels
Irregularly shaped reservoir
Pressure distribution
Pressure transient test
Prospecting and production of crude oil, natural gas, oil shales and tar sands
Reservoir engineering, simulation studies and models
Water drive reservoir
Drainage
Reservoir engineering
Transient pressure test
Oil field
Pressure distribution
Forecast model
Exploitation
Aquifers
Dimensionless number
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Summary:Many analytical methods use radial and rectangular systems to interpret unsteady-state reservoir flow problems. However, there is no information currently available for irregularly shaped water-drive reservoirs. For many practical cases the reservoir drainage shape is too complicated to be approximated by a circular or rectangular shape. In addition, many reservoirs are under water-drive conditions. This paper develops a means of predicting pressure-transient behavior in an irregularly shaped water-drive reservoirs. In this paper, the dimensionless-pressure function is obtained by superposing the line-source solutions of image wells in time. The method is first applied to regularly shaped reservoirs under water-drive conditions. The validity of the approach is then proved by comparison of the calculated dimensionlesspressure functions with literature values for various regular drainage shapes. The proven technique could be used to analyze the field pressure-transient data to provide information on reservoir engineering parameters, water-drive distribution and strength, fault sealingness and non-sealingness.
ISSN:0582-4664
DOI:10.1627/jpi1958.35.261