000			02080nab a2200205 4500
005			20260520004413.0
008			260224s2012 xxu ing
041			_aInglés
245	0	0	_aA New Deconvolution Technique Based on Pressure-Derivative Data for Pressure-Transient-Test Interpretation
260			_a _b _cmar. 2012
270			_a10/12/2012 ; 10/12/2012
300			_a13 p. ; 307-320
520			_aTranscripción del resumen del autor In this paper, we present a new deconvolution method that removes the dependency of the deconvolved constant-rate drawdown responses on the initial reservoir pressure. It is well known that the late-time periods in particular of the deconvolved responses from the recent pressure-rate deconvolution methods are dependent on the initial reservoir pressure. A small error in the initial reservoir pressure could make a significant difference in the late-time periods of the deconvolved responses that can lead to an incorrect interpretation model, particularly misinterpretation of the boundaries. The new method presented is based on pressure-derivative data rather than pressure data that are used in all published deconvolution algorithms. Using pressure-derivative data in deconvolution leads to a nonlinear least-squares objective function that is different from those used in the earlier deconvolution methods and eliminates the dependency of the deconvolved responses on the initial reservoir pressure. Therefore, the new method minimizes incorrect interpretation because of an error or uncertainty in the initial reservoir pressure. We apply the new method to both simulated and field pressure-transient data sets. The results show that the new method offers a significant advantage over the earlier deconvolution methods for pressure-transient-test interpretation in cases where the initial reservoir pressure is unknown or uncertain.
581			_a1
773	0		_tSPE Journal _g17
942			_cARTICULO
100	1		_aOnur, Mustafa _923663
100	1		_aKuchuk, Fikri J. _923662
999			_c187493 _d187493