Production Analysis and Well Performance Forecasting of Tight Gas and Shale Gas Wells Conference Paper uri icon

abstract

  • Abstract Estimation of reserves in tight gas and shale gas reservoirs is problematic due to the low to ultra-low permeability characteristics of these reservoir systems. The sole application of conventional decline curve analysis methodologies often yields erroneous reserve estimates. Therefore, the use of theoretically-based production analysis techniques has become a must to analyze well performance and estimate reserves. The primary objective of this work is to develop a systematic workflow, which integrates model-based production analysis and rate-time relations, for the analysis/interpretation of well performance data in unconventional reservoirs. The major steps in the proposed workflow are:Diagnosis of production data.Construction of a base well/reservoir model utilizing static well/reservoir data as well as completion/stimulation parameters.Extrapolation of the model to predict well performance along with the use of rate-time decline relations. The proposed methodology is demonstrated using data from unconventional reservoirs, including a horizontal well with multiple fractures. We present the application of rate-time relations to provide estimates of time-dependent reserves. The use of βq,cp-derivative is also illustrated in distinguishing data characteristics as well as identifying issues associated with data.

name of conference

  • SPE Eastern Regional Meeting

published proceedings

  • All Days

author list (cited authors)

  • Ilk, D., Currie, S. M., & Blasingame, T. A

complete list of authors

  • Ilk, D||Currie, SM||Blasingame, TA

publication date

  • January 1, 2010 11:11 AM

publisher

  • SPE  Publisher