000			02159nab a2200205 4500
005			20260520002031.0
008			260224s2011 xxu
245	0	0	_aImproved Darcy and non-Darcy flow formulations around hydraulically fractured wells
260			_a _b _cjul. 2011
270			_a18/11/2011 ; 18/11/2011
300			_a11 p. ; 149-159
520			_aTranscripción del resumen del autor. Fracturing is one of the most common well stimulation techniques especially for tight gas reservoirs. Hence, considerable amount of efforts have been devoted to study the performance of hydraulically fractured wells (HFWs). However, there are uncertainties regarding the impact of some of the pertinent parameters, especially the non-Darcy effect. In this work, a number of simulators have been developed to study and compare the productivity of a HFW at both steady and pseudo steady states conditions. Description of HFWs in gas reservoirs using such numerical simulators requires the use of very fine grids to capture the significant changes of flow properties occurring in and around the fracture. This task is very cumbersome, time consuming and impractical. Therefore, the results of the in-house simulators have been used to develop more generalized formulae for calculation of Darcy flow fracture skin and effective wellbore radius. These formulae can be used in an equivalent open-hole system that replicates flow around HFW with no need for the fine grid exercise. Considering that inertial effect can significantly reduce the effective fracture conductivity, we have extended the application of these developed formulae to non-Darcy flow systems by replacing absolute fracture conductivity with the effective fracture conductivity. Here we have also addressed the conflicting reports on the extent of negative impact of inertia on the flow performance of HFWs and have identified the most reliable formula.
581			_a1
773	0		_tJournal of Petroleum Science & Engineering _g78
942			_cARTICULO
100	1		_aMahdiyar, H. _951757
100	1		_aJamiolahmady, M. _942523
100	1		_aSohrabi, M. _919862
999			_c186576 _d186576