Effects of stress-dependent permeabilities and non-darcy flow parameters on the productivity index of the hydraulically fractured completions in gas reservoirs

Document Type

Conference Proceeding

Publication Date

1-1-2014

Abstract

Non-Darcy flows are expected to be ubiquitous in near wellbore regions, completions, and in hydraulic fractures of high productivity gas wells. Further, the prevailing dynamic effective stress in the near wellbore region is expected to be an influencing factor for the completion conductivity and non-Darcy flow behavior in it. In other words, the properties (fracture permeability and beta-factor) can vary with the time and location in the reservoir (especially in regions close to the wellbore). Using constant values based on empirical correlations for reservoirs/completions properties can lead to erroneous cumulative productivity predictions. With the recent advances in the imaging technology, it is now possible to reconstruct pore geometries of the proppant packs under different stress conditions. With further advances in powerful computing platforms, it is possible to handle large amount of computations such as lattice Boltzmann (LB) simulations faster and more efficiently. The objective of this paper is to broaden the knowledge of completion performance with the hydraulic fractures by investigating the variations of the permeabilities and betafactor due to near wellbore stresses using the image-based simulations in proppant packs.

Publication Source (Journal or Book title)

Sustainable Engineering Forum 2014 - Core Programming Area at the 2014 AIChE Spring Meeting and 10th Global Congress on Process Safety

First Page

241

Last Page

242

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