Evaluation of the effect of stress-dependent permeability on production performance in shale gas reservoirs

Tariq A. Ali, James J. Sheng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

25 Scopus citations

Abstract

It is very important to predict well performance of unconventional reservoirs before designing a field development plan. Although these reservoirs have high initial production rates, it is common that their production performance decline faster than conventional reservoirs. Therefore, it is necessary to identify the reasons behind the reduction of production performance. One of these reasons is the increase in stress as a result of continuing production and decrease in pore pressure. The main objective of the research presented in this paper is to model the effects of stress-dependent permeability for both hydraulic and natural fractures on the production performance of shale gas reservoirs. We generate a new stress-dependent compaction table to history match the performances of a single well in Haynesville formation. We also investigate the optimum operation conditions at which no sever reduction in production performance occurs. The results of more than 50 simulation cases indicate that stress-dependent properties (permeability and porosity) have a significant effect on reservoir performance. The study also indicate that hydraulic fractures lose over 90% of its permeability with most of the permeability loss occurring at late time of production. The study also shows that we can delay the effect of stress-dependent properties by either increasing initial hydraulic fracture conductivity or operating wells at low drawdown pressure.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Eastern Regional Meeting 2015, ERM 2015
PublisherSociety of Petroleum Engineers (SPE)
ISBN (Electronic)9781613994252
DOIs
StatePublished - 2015
Event2015 SPE Eastern Regional Meeting, ERM 2015 - Morgantown, United States
Duration: Oct 13 2015Oct 15 2015

Publication series

NameSPE Eastern Regional Meeting
Volume2015-January

Conference

Conference2015 SPE Eastern Regional Meeting, ERM 2015
CountryUnited States
CityMorgantown
Period10/13/1510/15/15

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