A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks

Abstract Permeability and porosity are the two most important parameters of rocks for the evaluation and exploitation of oil/gas reservoirs. In this study, a modified pulse‐decay method has been developed to measure both permeability and porosity simultaneously. In the present method, the gas pressu...

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Autores principales:	Yue Wang, Steffen Nolte, Zhiguo Tian, Alexandra Amann‐Hildenbrand, Bernhard Krooss, Moran Wang
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	permeability porosity porous media pulse‐decay method tight rocks Technology T Science Q
Acceso en línea:	https://doaj.org/article/d944406276f5498199ae0d57b3905b32
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spelling	oai:doaj.org-article:d944406276f5498199ae0d57b3905b322021-12-02T05:24:30ZA modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks2050-050510.1002/ese3.989https://doaj.org/article/d944406276f5498199ae0d57b3905b322021-12-01T00:00:00Zhttps://doi.org/10.1002/ese3.989https://doaj.org/toc/2050-0505Abstract Permeability and porosity are the two most important parameters of rocks for the evaluation and exploitation of oil/gas reservoirs. In this study, a modified pulse‐decay method has been developed to measure both permeability and porosity simultaneously. In the present method, the gas pressure in one chamber is changed (increased or decreased) instantaneously and then maintained constant, while the pressure response changing with time in the other one is monitored. A mathematical model of this procedure has been formulated, and a general analytical solution, including the early‐time and late‐time evolutions, has been obtained. The late‐time solution is presented for postprocessing of experimental data, which leads to the simultaneous measurement of permeability and porosity values of tight rocks. Our measurements agree well with those from the classical pulse‐decay and gas expansion methods. Compared with measuring the permeability and porosity separately, the proposed method can reduce the total test time and ensure the permeability and porosity are measured under the same effective stress condition.Yue WangSteffen NolteZhiguo TianAlexandra Amann‐HildenbrandBernhard KroossMoran WangWileyarticlepermeabilityporosityporous mediapulse‐decay methodtight rocksTechnologyTScienceQENEnergy Science & Engineering, Vol 9, Iss 12, Pp 2354-2363 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	permeability porosity porous media pulse‐decay method tight rocks Technology T Science Q
spellingShingle	permeability porosity porous media pulse‐decay method tight rocks Technology T Science Q Yue Wang Steffen Nolte Zhiguo Tian Alexandra Amann‐Hildenbrand Bernhard Krooss Moran Wang A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
description	Abstract Permeability and porosity are the two most important parameters of rocks for the evaluation and exploitation of oil/gas reservoirs. In this study, a modified pulse‐decay method has been developed to measure both permeability and porosity simultaneously. In the present method, the gas pressure in one chamber is changed (increased or decreased) instantaneously and then maintained constant, while the pressure response changing with time in the other one is monitored. A mathematical model of this procedure has been formulated, and a general analytical solution, including the early‐time and late‐time evolutions, has been obtained. The late‐time solution is presented for postprocessing of experimental data, which leads to the simultaneous measurement of permeability and porosity values of tight rocks. Our measurements agree well with those from the classical pulse‐decay and gas expansion methods. Compared with measuring the permeability and porosity separately, the proposed method can reduce the total test time and ensure the permeability and porosity are measured under the same effective stress condition.
format	article
author	Yue Wang Steffen Nolte Zhiguo Tian Alexandra Amann‐Hildenbrand Bernhard Krooss Moran Wang
author_facet	Yue Wang Steffen Nolte Zhiguo Tian Alexandra Amann‐Hildenbrand Bernhard Krooss Moran Wang
author_sort	Yue Wang
title	A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
title_short	A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
title_full	A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
title_fullStr	A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
title_full_unstemmed	A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
title_sort	modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/d944406276f5498199ae0d57b3905b32
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A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks

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