01745nab a2200205 4500 20260520000317.0 260224s2014 xxu ing Inglés Compressibility of sorptive porous media Part 1. Background and theory sept. 2014 20/11/2014 ; 20/11/2014 11 p. ; 1761-1772 Transcripción del resumen del autor: This paper, the first of a two-part series, provides a sound background of the volumetric response of sorptive porous media to gas depletion under in situ boundary conditions in producing reservoirs. As a first step, the overall rock matrix deformation is split into two separate components, elastic deformation caused by mechanical decompression and the nonelastic swelling or shrinkage strain induced by adsorption or desorption of gas. The shrinkage or swelling compressibility is estimated by the first derivative of pure adsorption or desorption strain with variations of gas pressure. The pore volume, or fracture, compressibility is then estimated by application of a semi-empirical model under uniaxial strain conditions. Based on the proposed model, both shrinkage or swelling and pore volume compressibilities show strong pressure dependence for sorbing gases and are thus variables for which gas production is controlled by desorption of gas. In Part 2, the experimental work under best-replicated in situ conditions is described in detail along with the results obtained and application of the theory presented in this paper. 9 AAPG Bulletin 98 ARTICULO Liu, Shimin 54242 Harpalani, Satya 49118 188663 188663 0 0 0 0 256482 BAAB BAAB 2026-03-06 200060869 0 200060869 2026-03-06 00:18:44 2026-03-06 ARTICULO