Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization

Abstract Traditional porous media imbibition models deviate from the actual imbibition process in oil and gas reservoirs. Experimental studies on gas–water imbibition in reservoirs were carried out to describe the dynamic profile variation process of wet phase saturation in reservoirs and to further...

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Autores principales:	Xuan Xu, Yujin Wan, Xizhe Li, Yong Hu, Shanshan Tian, Qingyan Mei, Chunyan Jiao, Changmin Guo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/efe6c78882cd4db78d9e5c7dc424d4ef
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spelling	oai:doaj.org-article:efe6c78882cd4db78d9e5c7dc424d4ef2021-12-02T18:27:47ZMicroscopic imbibition characterization of sandstone reservoirs and theoretical model optimization10.1038/s41598-021-87856-x2045-2322https://doaj.org/article/efe6c78882cd4db78d9e5c7dc424d4ef2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87856-xhttps://doaj.org/toc/2045-2322Abstract Traditional porous media imbibition models deviate from the actual imbibition process in oil and gas reservoirs. Experimental studies on gas–water imbibition in reservoirs were carried out to describe the dynamic profile variation process of wet phase saturation in reservoirs and to further reveal the variation of the imbibition front and the imbibition amount. Optimization and correction methods were established, and experimental verifications were performed. Studies have shown the following: (1) Unlike homogeneous porous media, the water phase imbibition process in oil and gas reservoirs is more complicated, and it is impossible for the maximum saturation of imbibition to reach 100%. (2) Contrary to the theoretical hypothesis, the imbibition of water is not piston-like, and there is a clear transition zone at the imbibition front. This transition zone is the main cause of water saturation variations in the imbibition zone; with the expansion of the imbibition zone, the influence of the transition zone on water saturation weakens. (3) Traditional theoretical models predict a positive correlation between the imbibition amount and the measurements; however, there is a large deviation in the numerical values, which must be corrected. (4) The L-W model was optimized and the parameter group fluid factor F and the reservoir factor R were proposed to characterize the properties of the fluid and the reservoir, respectively. These two parameters have a clear physical significance and are easy to accurately test. After experimental correction, the optimized model is favourably suitable for oil and gas reservoirs.Xuan XuYujin WanXizhe LiYong HuShanshan TianQingyan MeiChunyan JiaoChangmin GuoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xuan Xu Yujin Wan Xizhe Li Yong Hu Shanshan Tian Qingyan Mei Chunyan Jiao Changmin Guo Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
description	Abstract Traditional porous media imbibition models deviate from the actual imbibition process in oil and gas reservoirs. Experimental studies on gas–water imbibition in reservoirs were carried out to describe the dynamic profile variation process of wet phase saturation in reservoirs and to further reveal the variation of the imbibition front and the imbibition amount. Optimization and correction methods were established, and experimental verifications were performed. Studies have shown the following: (1) Unlike homogeneous porous media, the water phase imbibition process in oil and gas reservoirs is more complicated, and it is impossible for the maximum saturation of imbibition to reach 100%. (2) Contrary to the theoretical hypothesis, the imbibition of water is not piston-like, and there is a clear transition zone at the imbibition front. This transition zone is the main cause of water saturation variations in the imbibition zone; with the expansion of the imbibition zone, the influence of the transition zone on water saturation weakens. (3) Traditional theoretical models predict a positive correlation between the imbibition amount and the measurements; however, there is a large deviation in the numerical values, which must be corrected. (4) The L-W model was optimized and the parameter group fluid factor F and the reservoir factor R were proposed to characterize the properties of the fluid and the reservoir, respectively. These two parameters have a clear physical significance and are easy to accurately test. After experimental correction, the optimized model is favourably suitable for oil and gas reservoirs.
format	article
author	Xuan Xu Yujin Wan Xizhe Li Yong Hu Shanshan Tian Qingyan Mei Chunyan Jiao Changmin Guo
author_facet	Xuan Xu Yujin Wan Xizhe Li Yong Hu Shanshan Tian Qingyan Mei Chunyan Jiao Changmin Guo
author_sort	Xuan Xu
title	Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
title_short	Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
title_full	Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
title_fullStr	Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
title_full_unstemmed	Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
title_sort	microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/efe6c78882cd4db78d9e5c7dc424d4ef
work_keys_str_mv	AT xuanxu microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT yujinwan microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT xizheli microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT yonghu microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT shanshantian microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT qingyanmei microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT chunyanjiao microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization AT changminguo microscopicimbibitioncharacterizationofsandstonereservoirsandtheoreticalmodeloptimization
_version_	1718378072805212160

Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization

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