Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China

The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Xiao HE [verfasserIn] Qingsong TANG [verfasserIn] Guanghui WU [verfasserIn] Fei LI [verfasserIn] Weizhen TIAN [verfasserIn] Wenjun LUO [verfasserIn] Bingshan MA [verfasserIn] Chen SU [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Chinesisch

Erschienen:	2023

Schlagwörter:	pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin

Übergeordnetes Werk:	In: Petroleum Exploration and Development - KeAi Communications Co., Ltd., 2018, 50(2023), 6, Seite 1282-1294
Übergeordnetes Werk:	volume:50 ; year:2023 ; number:6 ; pages:1282-1294

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/S1876-3804(24)60466-0

Katalog-ID:	DOAJ099033682

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allfields	10.1016/S1876-3804(24)60466-0 doi (DE-627)DOAJ099033682 (DE-599)DOAJ3f80daa3c2664645b24574a26844027f DE-627 ger DE-627 rakwb eng chi TP690-692.5 Xiao HE verfasserin aut Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs. pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin Petroleum refining. Petroleum products Qingsong TANG verfasserin aut Guanghui WU verfasserin aut Fei LI verfasserin aut Weizhen TIAN verfasserin aut Wenjun LUO verfasserin aut Bingshan MA verfasserin aut Chen SU verfasserin aut In Petroleum Exploration and Development KeAi Communications Co., Ltd., 2018 50(2023), 6, Seite 1282-1294 (DE-627)588778257 (DE-600)2471051-9 18763804 nnns volume:50 year:2023 number:6 pages:1282-1294 https://doi.org/10.1016/S1876-3804(24)60466-0 kostenfrei https://doaj.org/article/3f80daa3c2664645b24574a26844027f kostenfrei http://www.sciencedirect.com/science/article/pii/S1876380424604660 kostenfrei https://doaj.org/toc/1876-3804 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 50 2023 6 1282-1294
spelling	10.1016/S1876-3804(24)60466-0 doi (DE-627)DOAJ099033682 (DE-599)DOAJ3f80daa3c2664645b24574a26844027f DE-627 ger DE-627 rakwb eng chi TP690-692.5 Xiao HE verfasserin aut Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs. pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin Petroleum refining. Petroleum products Qingsong TANG verfasserin aut Guanghui WU verfasserin aut Fei LI verfasserin aut Weizhen TIAN verfasserin aut Wenjun LUO verfasserin aut Bingshan MA verfasserin aut Chen SU verfasserin aut In Petroleum Exploration and Development KeAi Communications Co., Ltd., 2018 50(2023), 6, Seite 1282-1294 (DE-627)588778257 (DE-600)2471051-9 18763804 nnns volume:50 year:2023 number:6 pages:1282-1294 https://doi.org/10.1016/S1876-3804(24)60466-0 kostenfrei https://doaj.org/article/3f80daa3c2664645b24574a26844027f kostenfrei http://www.sciencedirect.com/science/article/pii/S1876380424604660 kostenfrei https://doaj.org/toc/1876-3804 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 50 2023 6 1282-1294
allfields_unstemmed	10.1016/S1876-3804(24)60466-0 doi (DE-627)DOAJ099033682 (DE-599)DOAJ3f80daa3c2664645b24574a26844027f DE-627 ger DE-627 rakwb eng chi TP690-692.5 Xiao HE verfasserin aut Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs. pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin Petroleum refining. Petroleum products Qingsong TANG verfasserin aut Guanghui WU verfasserin aut Fei LI verfasserin aut Weizhen TIAN verfasserin aut Wenjun LUO verfasserin aut Bingshan MA verfasserin aut Chen SU verfasserin aut In Petroleum Exploration and Development KeAi Communications Co., Ltd., 2018 50(2023), 6, Seite 1282-1294 (DE-627)588778257 (DE-600)2471051-9 18763804 nnns volume:50 year:2023 number:6 pages:1282-1294 https://doi.org/10.1016/S1876-3804(24)60466-0 kostenfrei https://doaj.org/article/3f80daa3c2664645b24574a26844027f kostenfrei http://www.sciencedirect.com/science/article/pii/S1876380424604660 kostenfrei https://doaj.org/toc/1876-3804 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 50 2023 6 1282-1294
allfieldsGer	10.1016/S1876-3804(24)60466-0 doi (DE-627)DOAJ099033682 (DE-599)DOAJ3f80daa3c2664645b24574a26844027f DE-627 ger DE-627 rakwb eng chi TP690-692.5 Xiao HE verfasserin aut Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs. pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin Petroleum refining. Petroleum products Qingsong TANG verfasserin aut Guanghui WU verfasserin aut Fei LI verfasserin aut Weizhen TIAN verfasserin aut Wenjun LUO verfasserin aut Bingshan MA verfasserin aut Chen SU verfasserin aut In Petroleum Exploration and Development KeAi Communications Co., Ltd., 2018 50(2023), 6, Seite 1282-1294 (DE-627)588778257 (DE-600)2471051-9 18763804 nnns volume:50 year:2023 number:6 pages:1282-1294 https://doi.org/10.1016/S1876-3804(24)60466-0 kostenfrei https://doaj.org/article/3f80daa3c2664645b24574a26844027f kostenfrei http://www.sciencedirect.com/science/article/pii/S1876380424604660 kostenfrei https://doaj.org/toc/1876-3804 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 50 2023 6 1282-1294
allfieldsSound	10.1016/S1876-3804(24)60466-0 doi (DE-627)DOAJ099033682 (DE-599)DOAJ3f80daa3c2664645b24574a26844027f DE-627 ger DE-627 rakwb eng chi TP690-692.5 Xiao HE verfasserin aut Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs. pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin Petroleum refining. Petroleum products Qingsong TANG verfasserin aut Guanghui WU verfasserin aut Fei LI verfasserin aut Weizhen TIAN verfasserin aut Wenjun LUO verfasserin aut Bingshan MA verfasserin aut Chen SU verfasserin aut In Petroleum Exploration and Development KeAi Communications Co., Ltd., 2018 50(2023), 6, Seite 1282-1294 (DE-627)588778257 (DE-600)2471051-9 18763804 nnns volume:50 year:2023 number:6 pages:1282-1294 https://doi.org/10.1016/S1876-3804(24)60466-0 kostenfrei https://doaj.org/article/3f80daa3c2664645b24574a26844027f kostenfrei http://www.sciencedirect.com/science/article/pii/S1876380424604660 kostenfrei https://doaj.org/toc/1876-3804 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_187 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 50 2023 6 1282-1294
language	English Chinese
source	In Petroleum Exploration and Development 50(2023), 6, Seite 1282-1294 volume:50 year:2023 number:6 pages:1282-1294
sourceStr	In Petroleum Exploration and Development 50(2023), 6, Seite 1282-1294 volume:50 year:2023 number:6 pages:1282-1294
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin Petroleum refining. Petroleum products
isfreeaccess_bool	true
container_title	Petroleum Exploration and Development
authorswithroles_txt_mv	Xiao HE @@aut@@ Qingsong TANG @@aut@@ Guanghui WU @@aut@@ Fei LI @@aut@@ Weizhen TIAN @@aut@@ Wenjun LUO @@aut@@ Bingshan MA @@aut@@ Chen SU @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	588778257
id	DOAJ099033682
language_de	englisch chinesisch
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However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. 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callnumber-first	T - Technology
author	Xiao HE
spellingShingle	Xiao HE misc TP690-692.5 misc pre-Cambrian misc strike-slip fault misc carbonate reservoir misc fracturing misc controlling factor misc Sichuan Basin misc Petroleum refining. Petroleum products Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China
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topic_title	TP690-692.5 Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China pre-Cambrian strike-slip fault carbonate reservoir fracturing controlling factor Sichuan Basin
topic	misc TP690-692.5 misc pre-Cambrian misc strike-slip fault misc carbonate reservoir misc fracturing misc controlling factor misc Sichuan Basin misc Petroleum refining. Petroleum products
topic_unstemmed	misc TP690-692.5 misc pre-Cambrian misc strike-slip fault misc carbonate reservoir misc fracturing misc controlling factor misc Sichuan Basin misc Petroleum refining. Petroleum products
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title	Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China
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title_full	Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China
author_sort	Xiao HE
journal	Petroleum Exploration and Development
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author_browse	Xiao HE Qingsong TANG Guanghui WU Fei LI Weizhen TIAN Wenjun LUO Bingshan MA Chen SU
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title_sort	control of strike-slip faults on sinian carbonate reservoirs in anyue gasfield, sichuan basin, sw china
callnumber	TP690-692.5
title_auth	Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China
abstract	The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs.
abstractGer	The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs.
abstract_unstemmed	The largest Precambrian gas field (Anyue Gasfield) in China has been discovered in the central Sichuan Basin. However, the deep ancient Ediacaran dolomite presents a substantial challenge due to their tightness and heterogeneity, rather than assumed large-area stratified reservoirs controlled by mound-shoal microfacies. This complicates the characterization of “sweet spot” reservoirs crucial for efficient gas exploitation. By analyzing compiled geological, geophysical and production data, this study investigates the impact of strike-slip fault on the development and distribution of high-quality “sweet spot” (fracture-vuggy) reservoirs in the Ediacaran dolomite of the Anyue Gasfield. The dolomite matrix reservoir exhibits low porosity (less than 4%) and low permeability (less than 0.5×10–3 μm2). Contrarily, fractures and their dissolution processes along strike-slip fault zone significantly enhance matrix permeability by more than one order of magnitude and matrix porosity by more than one time. Widespread “sweet spot” fracture-vuggy reservoirs are found along the strike-slip fault zone, formed at the end of the Ediacaran. These fractured reservoirs are controlled by the coupling mechanisms of sedimentary microfacies, fracturing and karstification. Karstification prevails at the platform margin, while both fracturing and karstification control high-quality reservoirs in the intraplatform, resulting in reservoir diversity in terms of scale, assemblage and type. The architecture of the strike-slip fault zone governed the differential distribution of fracture zones and the fault-controlled “sweet spot” reservoirs, leading to wide fractured-vuggy reservoirs across the strike-slip fault zone. In conclusion, the intracratonic weak strike-slip fault can play a crucial role in improving tight carbonate reservoir, and the strike-slip fault-related “sweet spot” reservoir emerges as a unique and promising target for the efficient development of deep hydrocarbon resources. Tailored development strategies need to be implemented for these reservoirs, considering the diverse and differential impacts exerted by strike-slip faults on the reservoirs.
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title_short	Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China
url	https://doi.org/10.1016/S1876-3804(24)60466-0 https://doaj.org/article/3f80daa3c2664645b24574a26844027f http://www.sciencedirect.com/science/article/pii/S1876380424604660 https://doaj.org/toc/1876-3804
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Control of strike-slip faults on Sinian carbonate reservoirs in Anyue gasfield, Sichuan Basin, SW China

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