The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China

Abstract Tight sandstone gas (hereafter “tight gas”) has become a subject of unconventional gas exploration globally. The large-scale development and use of tight gas resources in the USA, in particular, facilitated the rapid rebound of natural gas production in the USA, in addition to driving the r...

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Autores principales:	Hong-Jun Qu, Bo Yang, Xia-He Tian, Xin-She Liu, Huan Yang, Wen-Wu Dong, Ya-Hui Chen
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2019
Materias:	Porosity and permeability Largest throat radius Movable fluid saturation Effective pore throat volume The range of gas–water two-phase seepage zone Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/4947c0e936694246a278858437815a0d
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spelling	oai:doaj.org-article:4947c0e936694246a278858437815a0d2021-12-02T12:09:37ZThe primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China10.1007/s12182-019-00373-51672-51071995-8226https://doaj.org/article/4947c0e936694246a278858437815a0d2019-11-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-00373-5https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Tight sandstone gas (hereafter “tight gas”) has become a subject of unconventional gas exploration globally. The large-scale development and use of tight gas resources in the USA, in particular, facilitated the rapid rebound of natural gas production in the USA, in addition to driving the rapid development of tight gas worldwide. In the eastern Ordos Basin, the Upper Paleozoic feature includes multiple layers of gas, a shallow depth, and notable potential for exploration and development. However, the reservoirs in the area are relatively tight, exhibit strong heterogeneity, and possess a complex micropore structure, thus restricting the effective economic development of oil and gas. Thus, research on the primary parameters controlling pore throat structure and the seepage capability of low-permeability reservoirs will be beneficial for the efficient exploration and development of natural gas in the eastern Ordos Basin. The parameters of reservoir porosity and percolation ability, as well as permeability, were analyzed using systematic sampling of the of the Upper Paleozoic Benxi, Taiyuan, and Shanxi Formations in the eastern Ordos Basin, constant-rate mercury injection experiments, nuclear magnetic resonance analysis, and gas–water-phase experimental studies. The results indicate that reservoir porosity is controlled by the effective pore volume and number, whereas permeability is controlled by the largest throat radius, rather than the average. The effective pore volume controls the movable fluid saturation, while reservoir percolation capability is controlled by the effective pore volume, irreducible water saturation, and size of the gas–water two-phase seepage zone.Hong-Jun QuBo YangXia-He TianXin-She LiuHuan YangWen-Wu DongYa-Hui ChenKeAi Communications Co., Ltd.articlePorosity and permeabilityLargest throat radiusMovable fluid saturationEffective pore throat volumeThe range of gas–water two-phase seepage zoneScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 6, Pp 1270-1284 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Porosity and permeability Largest throat radius Movable fluid saturation Effective pore throat volume The range of gas–water two-phase seepage zone Science Q Petrology QE420-499
spellingShingle	Porosity and permeability Largest throat radius Movable fluid saturation Effective pore throat volume The range of gas–water two-phase seepage zone Science Q Petrology QE420-499 Hong-Jun Qu Bo Yang Xia-He Tian Xin-She Liu Huan Yang Wen-Wu Dong Ya-Hui Chen The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China
description	Abstract Tight sandstone gas (hereafter “tight gas”) has become a subject of unconventional gas exploration globally. The large-scale development and use of tight gas resources in the USA, in particular, facilitated the rapid rebound of natural gas production in the USA, in addition to driving the rapid development of tight gas worldwide. In the eastern Ordos Basin, the Upper Paleozoic feature includes multiple layers of gas, a shallow depth, and notable potential for exploration and development. However, the reservoirs in the area are relatively tight, exhibit strong heterogeneity, and possess a complex micropore structure, thus restricting the effective economic development of oil and gas. Thus, research on the primary parameters controlling pore throat structure and the seepage capability of low-permeability reservoirs will be beneficial for the efficient exploration and development of natural gas in the eastern Ordos Basin. The parameters of reservoir porosity and percolation ability, as well as permeability, were analyzed using systematic sampling of the of the Upper Paleozoic Benxi, Taiyuan, and Shanxi Formations in the eastern Ordos Basin, constant-rate mercury injection experiments, nuclear magnetic resonance analysis, and gas–water-phase experimental studies. The results indicate that reservoir porosity is controlled by the effective pore volume and number, whereas permeability is controlled by the largest throat radius, rather than the average. The effective pore volume controls the movable fluid saturation, while reservoir percolation capability is controlled by the effective pore volume, irreducible water saturation, and size of the gas–water two-phase seepage zone.
format	article
author	Hong-Jun Qu Bo Yang Xia-He Tian Xin-She Liu Huan Yang Wen-Wu Dong Ya-Hui Chen
author_facet	Hong-Jun Qu Bo Yang Xia-He Tian Xin-She Liu Huan Yang Wen-Wu Dong Ya-Hui Chen
author_sort	Hong-Jun Qu
title	The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China
title_short	The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China
title_full	The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China
title_fullStr	The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China
title_full_unstemmed	The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China
title_sort	primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on upper paleozoic formation in the eastern ordos basin, northern china
publisher	KeAi Communications Co., Ltd.
publishDate	2019
url	https://doaj.org/article/4947c0e936694246a278858437815a0d
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The primary controlling parameters of porosity, permeability, and seepage capability of tight gas reservoirs: a case study on Upper Paleozoic Formation in the eastern Ordos Basin, Northern China

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