000			01745nab a2200205 4500
005			20260520000317.0
008			260224s2014 xxu ing
041			_aInglés
245	0	0	_aCompressibility of sorptive porous media _bPart 1. Background and theory
260			_a _b _csept. 2014
270			_a20/11/2014 ; 20/11/2014
300			_a11 p. ; 1761-1772
520			_aTranscripción 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.
581			_a9
773	0		_tAAPG Bulletin _g98
942			_cARTICULO
100	1		_aLiu, Shimin _954242
100	1		_aHarpalani, Satya _949118
999			_c188663 _d188663