Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs

A large amount of fracturing fluid will be injected into the unconventional reservoirs during hydraulic fracturing. At present, the maximum amount of fracturing fluid injected into shale oil reaches 70000 m3 in Jimsar. The main function of fracturing fluid is to make fractures for traditional recons...

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Autores principales:	Tianlu Xu, Yingxian Lei, Chengmei Wu, Yinghao Shen
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi-Wiley 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/da1c33b70b7c427b9dd65089e11ac339
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spelling	oai:doaj.org-article:da1c33b70b7c427b9dd65089e11ac3392021-11-29T00:56:13ZInsight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs1468-812310.1155/2021/6438148https://doaj.org/article/da1c33b70b7c427b9dd65089e11ac3392021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/6438148https://doaj.org/toc/1468-8123A large amount of fracturing fluid will be injected into the unconventional reservoirs during hydraulic fracturing. At present, the maximum amount of fracturing fluid injected into shale oil reaches 70000 m3 in Jimsar. The main function of fracturing fluid is to make fractures for traditional reconstruction of fracturing; for unconventional reservoirs, fracturing fluid is also used to increase formation energy by large-scale injection. It is of great significance to improve the utilization efficiency of large-scale hydraulic fracturing fluid for shale oil to increase production and recovery. In this study, the method of improving the utilization efficiency of the large-scale hydraulic fracturing fluids is explored by experiment, numerical simulation, and field test of Jimsar shale oil formation. This research shows that fracture complexity can effectively increase the contact area between the fracturing fluids and the formation. The water absorption rate of the fractured core is increased, which lays the foundation for improving the liquid utilization efficiency. Reasonably, well shutting before production ensures the pressure balance in the fractures, and the fluid pressure can be transmitted to the far end, which improves the fracture effectiveness, increases formation energy, and promotes imbibition and oil displacement. By using the additive of enhanced imbibition displacement, the displacement efficiency and the displacement amount of crude oil in the micro-nanopores can be greatly improved, and the utilization ratio of liquid can be further enhanced. The experiment adopted in the field proves that improving energy utilization efficiency has an important impact on production. This study has great guiding significance for the efficient development and practical production of unconventional reservoirs.Tianlu XuYingxian LeiChengmei WuYinghao ShenHindawi-WileyarticleGeologyQE1-996.5ENGeofluids, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 Tianlu Xu Yingxian Lei Chengmei Wu Yinghao Shen Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs
description	A large amount of fracturing fluid will be injected into the unconventional reservoirs during hydraulic fracturing. At present, the maximum amount of fracturing fluid injected into shale oil reaches 70000 m3 in Jimsar. The main function of fracturing fluid is to make fractures for traditional reconstruction of fracturing; for unconventional reservoirs, fracturing fluid is also used to increase formation energy by large-scale injection. It is of great significance to improve the utilization efficiency of large-scale hydraulic fracturing fluid for shale oil to increase production and recovery. In this study, the method of improving the utilization efficiency of the large-scale hydraulic fracturing fluids is explored by experiment, numerical simulation, and field test of Jimsar shale oil formation. This research shows that fracture complexity can effectively increase the contact area between the fracturing fluids and the formation. The water absorption rate of the fractured core is increased, which lays the foundation for improving the liquid utilization efficiency. Reasonably, well shutting before production ensures the pressure balance in the fractures, and the fluid pressure can be transmitted to the far end, which improves the fracture effectiveness, increases formation energy, and promotes imbibition and oil displacement. By using the additive of enhanced imbibition displacement, the displacement efficiency and the displacement amount of crude oil in the micro-nanopores can be greatly improved, and the utilization ratio of liquid can be further enhanced. The experiment adopted in the field proves that improving energy utilization efficiency has an important impact on production. This study has great guiding significance for the efficient development and practical production of unconventional reservoirs.
format	article
author	Tianlu Xu Yingxian Lei Chengmei Wu Yinghao Shen
author_facet	Tianlu Xu Yingxian Lei Chengmei Wu Yinghao Shen
author_sort	Tianlu Xu
title	Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs
title_short	Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs
title_full	Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs
title_fullStr	Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs
title_full_unstemmed	Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs
title_sort	insight into the methods for improving the utilization efficiency of fracturing liquid in unconventional reservoirs
publisher	Hindawi-Wiley
publishDate	2021
url	https://doaj.org/article/da1c33b70b7c427b9dd65089e11ac339
work_keys_str_mv	AT tianluxu insightintothemethodsforimprovingtheutilizationefficiencyoffracturingliquidinunconventionalreservoirs AT yingxianlei insightintothemethodsforimprovingtheutilizationefficiencyoffracturingliquidinunconventionalreservoirs AT chengmeiwu insightintothemethodsforimprovingtheutilizationefficiencyoffracturingliquidinunconventionalreservoirs AT yinghaoshen insightintothemethodsforimprovingtheutilizationefficiencyoffracturingliquidinunconventionalreservoirs
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Insight into the Methods for Improving the Utilization Efficiency of Fracturing Liquid in Unconventional Reservoirs

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