Marine petroleum exploration in South China
Marine strata in South China are mainly distributed in the Paleozoic and Mesozoic. The strata are old and the thermal evolution degree is high. It was controlled by the multi-cycle sedimentary and multi-stage structural evolution history. The petroleum basic geological conditions are superior, but t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Petroleum Geology and Experiment
2020-09-01
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| Series: | Shiyou shiyan dizhi |
| Subjects: | |
| Online Access: | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202005675 |
| _version_ | 1797277244642557952 |
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| author | Xusheng GUO Dongfeng HU Jinbao DUAN |
| author_facet | Xusheng GUO Dongfeng HU Jinbao DUAN |
| author_sort | Xusheng GUO |
| collection | DOAJ |
| description | Marine strata in South China are mainly distributed in the Paleozoic and Mesozoic. The strata are old and the thermal evolution degree is high. It was controlled by the multi-cycle sedimentary and multi-stage structural evolution history. The petroleum basic geological conditions are superior, but the distribution of oil and gas is complicated. Oil and gas exploration has mainly gone through three stages: general survey, structural reservoir, massive lithologic gas reservoir and shale gas exploration. Although major breakthroughs have been made in many fields, the overall detection rate is low. A systematic summary of the early discovery of large gas fields and the new progress of exploration was made in order to clarify the prospects for oil and gas exploration. There is a large potential for marine petroleum exploration in South China. Deep and ultra-deep strata as well as new areas are important breakthrough directions in the Sichuan Basin. The unconventional shale gas reservoirs in the Upper Ordovician Wufeng-Lower Silurian Longmaxi formations and the conventional gas reservoirs in the platform margin zone of the Upper Sinian Dengying Formation in Langzhong-Yuanba, the platform inner beach facies in the Sinian-Cambrian in Tongnanba, the pre-salt strata in the lower assemblage in Qijiang in the southern Sichuan and the reef beach facies in the Permian-Triassic have a total resource amount to trillions of cubic meters, which is expected to achieve a new round of breakthroughs and discoveries. Besides, unconventional shale gas in the Permian and Jurassic and some new targets for conventional gas such as hydrothermal dolomites, karst fissure group, stucco limestones and sedimentary tuffs in the Permian show a great exploration potential. New discoveries continue to be made in complex basin-margin regions in the Sichuan Basin. Shale gas in the residual syncline area and conventional piedmont areas in the basin margin are the main exploration directions. The periphery of ancient uplifts and the progressive deformation area in the southern periphery have weak structural deformation, and the preservation conditions are favorable with a certain exploration potential, and are expected to become a strategic succession area for oil and gas. |
| first_indexed | 2024-03-07T15:44:52Z |
| format | Article |
| id | doaj.art-c2e0cc692cf0421aa8cecd0202d7755a |
| institution | Directory Open Access Journal |
| issn | 1001-6112 |
| language | zho |
| last_indexed | 2024-03-07T15:44:52Z |
| publishDate | 2020-09-01 |
| publisher | Editorial Office of Petroleum Geology and Experiment |
| record_format | Article |
| series | Shiyou shiyan dizhi |
| spelling | doaj.art-c2e0cc692cf0421aa8cecd0202d7755a2024-03-05T04:42:20ZzhoEditorial Office of Petroleum Geology and ExperimentShiyou shiyan dizhi1001-61122020-09-0142567568610.11781/sysydz202005675sysydz-42-5-675Marine petroleum exploration in South ChinaXusheng GUO0Dongfeng HU1Jinbao DUAN2SINOPEC Exploration Company, Chengdu 610041, ChinaSINOPEC Exploration Company, Chengdu 610041, ChinaSINOPEC Exploration Company, Chengdu 610041, ChinaMarine strata in South China are mainly distributed in the Paleozoic and Mesozoic. The strata are old and the thermal evolution degree is high. It was controlled by the multi-cycle sedimentary and multi-stage structural evolution history. The petroleum basic geological conditions are superior, but the distribution of oil and gas is complicated. Oil and gas exploration has mainly gone through three stages: general survey, structural reservoir, massive lithologic gas reservoir and shale gas exploration. Although major breakthroughs have been made in many fields, the overall detection rate is low. A systematic summary of the early discovery of large gas fields and the new progress of exploration was made in order to clarify the prospects for oil and gas exploration. There is a large potential for marine petroleum exploration in South China. Deep and ultra-deep strata as well as new areas are important breakthrough directions in the Sichuan Basin. The unconventional shale gas reservoirs in the Upper Ordovician Wufeng-Lower Silurian Longmaxi formations and the conventional gas reservoirs in the platform margin zone of the Upper Sinian Dengying Formation in Langzhong-Yuanba, the platform inner beach facies in the Sinian-Cambrian in Tongnanba, the pre-salt strata in the lower assemblage in Qijiang in the southern Sichuan and the reef beach facies in the Permian-Triassic have a total resource amount to trillions of cubic meters, which is expected to achieve a new round of breakthroughs and discoveries. Besides, unconventional shale gas in the Permian and Jurassic and some new targets for conventional gas such as hydrothermal dolomites, karst fissure group, stucco limestones and sedimentary tuffs in the Permian show a great exploration potential. New discoveries continue to be made in complex basin-margin regions in the Sichuan Basin. Shale gas in the residual syncline area and conventional piedmont areas in the basin margin are the main exploration directions. The periphery of ancient uplifts and the progressive deformation area in the southern periphery have weak structural deformation, and the preservation conditions are favorable with a certain exploration potential, and are expected to become a strategic succession area for oil and gas.https://www.sysydz.net/cn/article/doi/10.11781/sysydz202005675conventional gasshale gasreservoir development mechanismaccumulation mechanismdeep and ultra-deep stratasouthern marine areachina |
| spellingShingle | Xusheng GUO Dongfeng HU Jinbao DUAN Marine petroleum exploration in South China Shiyou shiyan dizhi conventional gas shale gas reservoir development mechanism accumulation mechanism deep and ultra-deep strata southern marine area china |
| title | Marine petroleum exploration in South China |
| title_full | Marine petroleum exploration in South China |
| title_fullStr | Marine petroleum exploration in South China |
| title_full_unstemmed | Marine petroleum exploration in South China |
| title_short | Marine petroleum exploration in South China |
| title_sort | marine petroleum exploration in south china |
| topic | conventional gas shale gas reservoir development mechanism accumulation mechanism deep and ultra-deep strata southern marine area china |
| url | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202005675 |
| work_keys_str_mv | AT xushengguo marinepetroleumexplorationinsouthchina AT dongfenghu marinepetroleumexplorationinsouthchina AT jinbaoduan marinepetroleumexplorationinsouthchina |