$Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan$
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Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan

Abstract Shale fractures are an important factor controlling shale gas enrichment and high-productivity zones in the Longmaxi Formation, Jiaoshiba area in eastern Sichuan. Drilling results have, however, shown that the shale fracture density does not have a straightforward correlation with shale gas...

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Autores principales:	Yu-Feng Li, Wei Sun, Xi-Wu Liu, Dian-Wei Zhang, Yan-Chun Wang, Zhi-Yuan Liu
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Azimuthal anisotropy Fracture prediction Shale Shale gas Shale reservoir preservation conditions Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/2559f1375bb742b9b366f522318fea5a
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spelling	oai:doaj.org-article:2559f1375bb742b9b366f522318fea5a2021-12-02T05:39:38ZStudy of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan10.1007/s12182-018-0249-71672-51071995-8226https://doaj.org/article/2559f1375bb742b9b366f522318fea5a2018-08-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0249-7https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Shale fractures are an important factor controlling shale gas enrichment and high-productivity zones in the Longmaxi Formation, Jiaoshiba area in eastern Sichuan. Drilling results have, however, shown that the shale fracture density does not have a straightforward correlation with shale gas productivity. Based on logging data, drilling and seismic data, the relationship between shale fracture and shale gas accumulation is investigated by integrating the results of experiments and geophysical methods. The following conclusions have been drawn: (1) Tracer diffusion tests indicate that zones of fracture act as favorable channels for shale gas migration and high-angle fractures promote gas accumulation. (2) Based on the result of azimuthal anisotropy prediction, a fracture system with anisotropy strength values between 1 and 1.15 represents a moderate development of high-angle fractures, which is considered to be favorable for shale gas accumulation and high productivity, while fracture systems with anisotropy strength values larger than 1.15 indicate over-development of shale fracture, which may result in the destruction of the shale reservoir preservation conditions.Yu-Feng LiWei SunXi-Wu LiuDian-Wei ZhangYan-Chun WangZhi-Yuan LiuKeAi Communications Co., Ltd.articleAzimuthal anisotropyFracture predictionShaleShale gasShale reservoir preservation conditionsScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 3, Pp 498-509 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Azimuthal anisotropy Fracture prediction Shale Shale gas Shale reservoir preservation conditions Science Q Petrology QE420-499
spellingShingle	Azimuthal anisotropy Fracture prediction Shale Shale gas Shale reservoir preservation conditions Science Q Petrology QE420-499 Yu-Feng Li Wei Sun Xi-Wu Liu Dian-Wei Zhang Yan-Chun Wang Zhi-Yuan Liu Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan
description	Abstract Shale fractures are an important factor controlling shale gas enrichment and high-productivity zones in the Longmaxi Formation, Jiaoshiba area in eastern Sichuan. Drilling results have, however, shown that the shale fracture density does not have a straightforward correlation with shale gas productivity. Based on logging data, drilling and seismic data, the relationship between shale fracture and shale gas accumulation is investigated by integrating the results of experiments and geophysical methods. The following conclusions have been drawn: (1) Tracer diffusion tests indicate that zones of fracture act as favorable channels for shale gas migration and high-angle fractures promote gas accumulation. (2) Based on the result of azimuthal anisotropy prediction, a fracture system with anisotropy strength values between 1 and 1.15 represents a moderate development of high-angle fractures, which is considered to be favorable for shale gas accumulation and high productivity, while fracture systems with anisotropy strength values larger than 1.15 indicate over-development of shale fracture, which may result in the destruction of the shale reservoir preservation conditions.
format	article
author	Yu-Feng Li Wei Sun Xi-Wu Liu Dian-Wei Zhang Yan-Chun Wang Zhi-Yuan Liu
author_facet	Yu-Feng Li Wei Sun Xi-Wu Liu Dian-Wei Zhang Yan-Chun Wang Zhi-Yuan Liu
author_sort	Yu-Feng Li
title	Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan
title_short	Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan
title_full	Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan
title_fullStr	Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan
title_full_unstemmed	Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan
title_sort	study of the relationship between fractures and highly productive shale gas zones, longmaxi formation, jiaoshiba area in eastern sichuan
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/2559f1375bb742b9b366f522318fea5a
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_version_	1718400282544570368

Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan

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