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Coarse scale simulation of tight gas reservoirs

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.

Identiferoai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/70
Date30 September 2004
CreatorsEl-Ahmady, Mohamed Hamed
ContributorsWattenbarger, Robert A., Schlechter, David S.
PublisherTexas A&M University
Source SetsTexas A and M University
Languageen_US
Detected LanguageEnglish
TypeBook, Thesis, Electronic Dissertation, text
Format2147215 bytes, 116043 bytes, electronic, application/pdf, text/plain, born digital

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