Hits:

Indexed by:会议论文

Date of Publication:2015-06-29

Included Journals:EI、Scopus

Volume:1

Page Number:157-163

Abstract:Reservoir Geomechanics as a reckoned role incorporates with not only performances of reservoir flows but its leakage-proof security. In order to take near and far-field Geomechanics into account during modelling CO2 injection process into deep saline aquifer, it is studied how to sufficiently control a compatible numerical discretization between reservoir flow and reservoir Geomechanics. Application of gridding technique is implemented through source code programming. It is introduced self-developed realization in commercial software package from unstructured meshes for the sake of efficiently extending overlying strata up to ground surface, to a regularly refined focus capable of stepwise capturing CO2 plume, surrounding by circumference divided into cells gradually scaling up along radiant directions. The resultant distributions of ground surface deformation simulated using different gridding algorithms are compared and some principles counter-intuitive to a usual work flow in analyzing ground surface heave induced by deep gas injection are studied. In addition, as a foundation to facilitate the decoupling strategy, an tractable interface is programmed to provide completely identical models as well as their discretization between reservoir flow simulation software CMG's GEM and reservoir Geomechanics modelling package Itasca's FLAC-3D. Copyright 2015 ARMA, American Rock Mechanics Association.