Coarse scale simulation of tight gas reservoirs

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Title: Coarse scale simulation of tight gas reservoirs
Author: El-Ahmady, Mohamed Hamed
Abstract: It is common for field models of tight gas reservoirs to include several wells with hydraulic fractures . These hydraulic fractures can be very long , extending for more than a thousand feet . A hydraulic fracture width is usually no more than about 0 .02 ft . The combination of the above factors leads to the conclusion that there is a need to model hydraulic fractures in coarse grid blocks for these field models since it may be impractical to simulate these models using fine grids . In this dissertation , a method was developed to simulate a reservoir model with a single hydraulic fracture that passes through several coarse gridblocks . This method was tested and a numerical error was quantified that occurs at early time due to the use of coarse grid blocks . In addition , in this work , rules were developed and tested on using uniform fine grids to simulate a reservoir model with a single hydraulic fracture . Results were compared with the results from simulations using non -uniform fine grids .
URI: http : / /hdl .handle .net /1969 .1 /70
Date: 2004-09-30

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Coarse scale simulation of tight gas reservoirs. Available electronically from http : / /hdl .handle .net /1969 .1 /70 .

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