Discovery of Yanting-Tongnan Trough of Late Permian in Sichuan Basin and Its Significance
ABSTRACT： Reef-bank of Sichuan （四川） basin have been explored along the platform margin belt on both sides of the Kaijiang （开江）-Liangping （梁平） trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After th...
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| Published in | Journal of earth science (Wuhan, China) Vol. 23; no. 4; pp. 582 - 596 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
China University of Geosciences
China University of Geosciences
01.08.2012
Springer Nature B.V |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-487X 1867-111X |
| DOI | 10.1007/s12583-012-0276-z |
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| Abstract | ABSTRACT： Reef-bank of Sichuan （四川） basin have been explored along the platform margin belt on both sides of the Kaijiang （开江）-Liangping （梁平） trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After the breakthroughs of Kaijiang-Liangping trough, how reef-bank exploration will proceed？ Is there another ＂Kaijiang-Liangping trough＂ in Sichuan basin？ Previous research shows that Sichuan basin underwent intracratonic rift and basement fault activities in Late Permian, developing a paleogeography framework of ＂three uplifts and three depressions＂ under the background of the regional large ramp, including Exi （鄂西）-Chengkou （城口） trough, Kaijiang-Liangping trough and Yanting （盐亭）-Tongnan （潼南） trough. Based on sedimentology and tectonics dynamics analysis, data of drillings, outcrops and seismic, Yanting-Tongnan trough has been discovered in central Sichuan basin in our study which distributes from Mianzhu （绵竹）, Jiangyou （江油） in western Sichuan basin through Nan-chong （南充） to Guang＇an （广安）, as long as about 210 km, extending in NW-SE nearly paralleling to Kaijiang-Liangping trough, opening to the sea north-westward, and gradually pinchout to the east platform. Similar to Kaijiang-Liangping trough, another platform margin reef belt distributes along a U-shape belt around Yanting-Tongnan trough, which is expected to become another natural gas accumulation zone after the platform margin around Kaijiang-Liangping trough. The discovery of Yanting-Tongnan trough expands favorable reef exploration area from original 2x 10^4 km2 on both sides of Kaijiang-Liangping trough to more than 6x10^4 km2 in Yanting-lbngnan trough platform margin belt and Kaijiang-Liangping platform margin belt, greatly enlarging the reef exploration field. But com-pared to Kaijiang-Liangping trough, YantingTongnan trough is relatively shallower and smaller, and the scale and quality of reef-bank reservoirs in its margin belt is a little poor relatively. Therefore, much research should be done timely such as comparative study of two troughs, detailed research of formation and evolution of the trough, regularity of reef migration, meticulous depiction of reef-bank reservoir size andDiscovery of Yanting-Tongnan Trough of Late Permian in Sichuan Basin and Its Significancedistribution in order to obtain major breakthroughs around the Yanting-Tongnan trough. |
|---|---|
| AbstractList | Reef-bank of Sichuan () basin have been explored along the platform margin belt on both sides of the Kaijiang ()-Liangping () trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After the breakthroughs of Kaijiang-Liangping trough, how reef-bank exploration will proceed? Is there another "Kaijiang-Liangping trough" in Sichuan basin? Previous research shows that Sichuan basin underwent intracratonic rift and basement fault activities in Late Permian, developing a paleogeography framework of "three uplifts and three depressions" under the background of the regional large ramp, including Exi ()-Chengkou () trough, Kaijiang-Liangping trough and Yanting ( )-Tongnan (æ½¼) trough. Based on sedimentology and tectonics dynamics analysis, data of drillings, outcrops and seismic, Yanting-Tongnan trough has been discovered in central Sichuan basin in our study which distributes from Mianzhu (), Jiangyou () in western Sichuan basin through Nanchong () to Guang'an (), as long as about 210 km, extending in NW-SE nearly paralleling to Kaijiang-Liangping trough, opening to the sea north-westward, and gradually pinchout to the east platform. Similar to Kaijiang-Liangping trough, another platform margin reef belt distributes along a U-shape belt around Yanting-Tongnan trough, which is expected to become another natural gas accumulation zone after the platform margin around Kaijiang-Liangping trough. The discovery of Yanting-Tongnan trough expands favorable reef exploration area from original 2×10^sup 4^ km^sup 2^ on both sides of Kaijiang-Liangping trough to more than 6×10^sup 4^ km^sup 2^ in Yanting-Tongnan trough platform margin belt and Kaijiang-Liangping platform margin belt, greatly enlarging the reef exploration field. But compared to Kaijiang-Liangping trough, Yanting-Tongnan trough is relatively shallower and smaller, and the scale and quality of reef-bank reservoirs in its margin belt is a little poor relatively. Therefore, much research should be done timely such as comparative study of two troughs, detailed research of formation and evolution of the trough, regularity of reef migration, meticulous depiction of reef-bank reservoir size and distribution in order to obtain major breakthroughs around the Yanting-Tongnan trough.[PUBLICATION ABSTRACT] Reef-bank of Sichuan () basin have been explored along the platform margin belt on both sides of the Kaijiang ()-Liangping () trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After the breakthroughs of Kaijiang-Liangping trough, how reef-bank exploration will proceed? Is there another "Kaijiang-Liangping trough" in Sichuan basin? Previous research shows that Sichuan basin underwent intracratonic rift and basement fault activities in Late Permian, developing a paleogeography framework of "three uplifts and three depressions" under the background of the regional large ramp, including Exi ()-Chengkou () trough, Kaijiang-Liangping trough and Yanting ( )-Tongnan (ae1/214) trough. Based on sedimentology and tectonics dynamics analysis, data of drillings, outcrops and seismic, Yanting-Tongnan trough has been discovered in central Sichuan basin in our study which distributes from Mianzhu (), Jiangyou () in western Sichuan basin through Nanchong () to Guang'an (), as long as about 210 km, extending in NW-SE nearly paralleling to Kaijiang-Liangping trough, opening to the sea north-westward, and gradually pinchout to the east platform. Similar to Kaijiang-Liangping trough, another platform margin reef belt distributes along a U-shape belt around Yanting-Tongnan trough, which is expected to become another natural gas accumulation zone after the platform margin around Kaijiang-Liangping trough. The discovery of Yanting-Tongnan trough expands favorable reef exploration area from original 210 super(4) km super(2) on both sides of Kaijiang-Liangping trough to more than 610 super(4) km super(2) in Yanting-Tongnan trough platform margin belt and Kaijiang-Liangping platform margin belt, greatly enlarging the reef exploration field. But compared to Kaijiang-Liangping trough, Yanting-Tongnan trough is relatively shallower and smaller, and the scale and quality of reef-bank reservoirs in its margin belt is a little poor relatively. Therefore, much research should be done timely such as comparative study of two troughs, detailed research of formation and evolution of the trough, regularity of reef migration, meticulous depiction of reef-bank reservoir size and distribution in order to obtain major breakthroughs around the Yanting-Tongnan trough. ABSTRACT： Reef-bank of Sichuan （四川） basin have been explored along the platform margin belt on both sides of the Kaijiang （开江）-Liangping （梁平） trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After the breakthroughs of Kaijiang-Liangping trough, how reef-bank exploration will proceed？ Is there another ＂Kaijiang-Liangping trough＂ in Sichuan basin？ Previous research shows that Sichuan basin underwent intracratonic rift and basement fault activities in Late Permian, developing a paleogeography framework of ＂three uplifts and three depressions＂ under the background of the regional large ramp, including Exi （鄂西）-Chengkou （城口） trough, Kaijiang-Liangping trough and Yanting （盐亭）-Tongnan （潼南） trough. Based on sedimentology and tectonics dynamics analysis, data of drillings, outcrops and seismic, Yanting-Tongnan trough has been discovered in central Sichuan basin in our study which distributes from Mianzhu （绵竹）, Jiangyou （江油） in western Sichuan basin through Nan-chong （南充） to Guang＇an （广安）, as long as about 210 km, extending in NW-SE nearly paralleling to Kaijiang-Liangping trough, opening to the sea north-westward, and gradually pinchout to the east platform. Similar to Kaijiang-Liangping trough, another platform margin reef belt distributes along a U-shape belt around Yanting-Tongnan trough, which is expected to become another natural gas accumulation zone after the platform margin around Kaijiang-Liangping trough. The discovery of Yanting-Tongnan trough expands favorable reef exploration area from original 2x 10^4 km2 on both sides of Kaijiang-Liangping trough to more than 6x10^4 km2 in Yanting-lbngnan trough platform margin belt and Kaijiang-Liangping platform margin belt, greatly enlarging the reef exploration field. But com-pared to Kaijiang-Liangping trough, YantingTongnan trough is relatively shallower and smaller, and the scale and quality of reef-bank reservoirs in its margin belt is a little poor relatively. Therefore, much research should be done timely such as comparative study of two troughs, detailed research of formation and evolution of the trough, regularity of reef migration, meticulous depiction of reef-bank reservoir size andDiscovery of Yanting-Tongnan Trough of Late Permian in Sichuan Basin and Its Significancedistribution in order to obtain major breakthroughs around the Yanting-Tongnan trough. Reef-bank of Sichuan (四川) basin have been explored along the platform margin belt on both sides of the Kaijiang (开江)-Liangping (梁平) trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After the breakthroughs of Kaijiang-Liangping trough, how reef-bank exploration will proceed? Is there another “Kaijiang-Liangping trough” in Sichuan basin? Previous research shows that Sichuan basin underwent intracratonic rift and basement fault activities in Late Permian, developing a paleogeography framework of “three uplifts and three depressions” under the background of the regional large ramp, including Exi (鄂西)-Chengkou (城口) trough, Kaijiang-Liangping trough and Yanting (盐 亭)-Tongnan (潼南) trough. Based on sedimentology and tectonics dynamics analysis, data of drillings, outcrops and seismic, Yanting-Tongnan trough has been discovered in central Sichuan basin in our study which distributes from Mianzhu (绵竹), Jiangyou (江油) in western Sichuan basin through Nanchong (南充) to Guang’an (广安), as long as about 210 km, extending in NW-SE nearly paralleling to Kaijiang-Liangping trough, opening to the sea north-westward, and gradually pinchout to the east platform. Similar to Kaijiang-Liangping trough, another platform margin reef belt distributes along a U-shape belt around Yanting-Tongnan trough, which is expected to become another natural gas accumulation zone after the platform margin around Kaijiang-Liangping trough. The discovery of Yanting-Tongnan trough expands favorable reef exploration area from original 2×10 4 km 2 on both sides of Kaijiang-Liangping trough to more than 6×10 4 km 2 in Yanting-Tongnan trough platform margin belt and Kaijiang-Liangping platform margin belt, greatly enlarging the reef exploration field. But compared to Kaijiang-Liangping trough, Yanting-Tongnan trough is relatively shallower and smaller, and the scale and quality of reef-bank reservoirs in its margin belt is a little poor relatively. Therefore, much research should be done timely such as comparative study of two troughs, detailed research of formation and evolution of the trough, regularity of reef migration, meticulous depiction of reef-bank reservoir size and distribution in order to obtain major breakthroughs around the Yanting-Tongnan trough. |
| Author | 李秋芬 汪泽成 李军 江青春 王铜山 殷积峰 谢芬 苗顺德 |
| AuthorAffiliation | College of Energy Resources, China University of Geosciences, Beijing 100083, China; Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China CNOOC Research Institute, Beijing 100027, China |
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| Cites_doi | 10.1007/s12583-011-0160-2 10.1007/978-1-4612-6383-8 10.1306/11030606062 10.3799/dqkx.2008.004 10.1007/s11434-011-4668-8 10.3799/dqkx.2008.071 10.1007/978-1-4612-6383-8_1 |
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| Keywords | Yanting-Tongnan trough migration of reef-bank body lithofacies paleogeography Sichuan basin |
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| Notes | Jun Li , Qingchun Jiang , Tongshan Wang , Jifeng Yin , Fen Xie Qiufen Li College of Energy Resources, China University of Geosciences, Beijing 100083, China; Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China Zecheng Wang , Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China Shunde Miao CNOOC Research Institute, Beijing 100027, China Yanting-Tongnan trough, migration of reef-bank body, lithofacies paleogeography,Sichuan basin. ABSTRACT： Reef-bank of Sichuan （四川） basin have been explored along the platform margin belt on both sides of the Kaijiang （开江）-Liangping （梁平） trough for a long time. Correspondingly, a series of major breakthroughs have been obtained and a number of large oil and gas fields have been found. After the breakthroughs of Kaijiang-Liangping trough, how reef-bank exploration will proceed？ Is there another ＂Kaijiang-Liangping trough＂ in Sichuan basin？ Previous research shows that Sichuan basin underwent intracratonic rift and basement fault activities in Late Permian, developing a paleogeography framework of ＂three uplifts and three depressions＂ under the background of the regional large ramp, including Exi （鄂西）-Chengkou （城口） trough, Kaijiang-Liangping trough and Yanting （盐亭）-Tongnan （潼南） trough. Based on sedimentology and tectonics dynamics analysis, data of drillings, outcrops and seismic, Yanting-Tongnan trough has been discovered in central Sichuan basin in our study which distributes from Mianzhu （绵竹）, Jiangyou （江油） in western Sichuan basin through Nan-chong （南充） to Guang＇an （广安）, as long as about 210 km, extending in NW-SE nearly paralleling to Kaijiang-Liangping trough, opening to the sea north-westward, and gradually pinchout to the east platform. Similar to Kaijiang-Liangping trough, another platform margin reef belt distributes along a U-shape belt around Yanting-Tongnan trough, which is expected to become another natural gas accumulation zone after the platform margin around Kaijiang-Liangping trough. The discovery of Yanting-Tongnan trough expands favorable reef exploration area from original 2x 10^4 km2 on both sides of Kaijiang-Liangping trough to more than 6x10^4 km2 in Yanting-lbngnan trough platform margin belt and Kaijiang-Liangping platform margin belt, greatly enlarging the reef exploration field. But com-pared to Kaijiang-Liangping trough, YantingTongnan trough is relatively shallower and smaller, and the scale and quality of reef-bank reservoirs in its margin belt is a little poor relatively. Therefore, much research should be done timely such as comparative study of two troughs, detailed research of formation and evolution of the trough, regularity of reef migration, meticulous depiction of reef-bank reservoir size andDiscovery of Yanting-Tongnan Trough of Late Permian in Sichuan Basin and Its Significancedistribution in order to obtain major breakthroughs around the Yanting-Tongnan trough. 42-1788/P SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23 |
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| Snippet | ABSTRACT： Reef-bank of Sichuan （四川） basin have been explored along the platform margin belt on both sides of the Kaijiang （开江）-Liangping （梁平）... Reef-bank of Sichuan (四川) basin have been explored along the platform margin belt on both sides of the Kaijiang (开江)-Liangping (梁平) trough for a long... Reef-bank of Sichuan () basin have been explored along the platform margin belt on both sides of the Kaijiang ()-Liangping () trough for a long time.... |
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| StartPage | 582 |
| SubjectTerms | Basins Belts Biogeosciences Comparative studies Coral reefs Earth and Environmental Science Earth science Earth Sciences Exploration Geochemistry Geology Geotechnical Engineering & Applied Earth Sciences Hydrocarbons Lithosphere Natural gas Oil and gas fields Permian Platforms Reefs Reservoirs Sedimentology Seismic phenomena 动力学分析 勘探领域 发展中国家 四川盆地 断裂活动 晚二叠世 网页翻译 西部盆地 |
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| Title | Discovery of Yanting-Tongnan Trough of Late Permian in Sichuan Basin and Its Significance |
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