Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China
Based on the comprehensive analysis of core, thin section, logging and seismic data, this study carried out the identification and comparison of Permian Changxing Formation sequences, clarified the typical sedimentary architectures of intra-platform shoal, investigated the vertical and horizontal de...
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KeAi Communications Co., Ltd.
2023-04-01
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| Series: | Petroleum Exploration and Development |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380423603957 |
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| author | Dong WANG Hong LIU Song TANG Jinhao BAI Gang ZHOU Zhengyong LI Feng LIANG Xiucheng TAN Chao GENG Ying YANG |
| author_facet | Dong WANG Hong LIU Song TANG Jinhao BAI Gang ZHOU Zhengyong LI Feng LIANG Xiucheng TAN Chao GENG Ying YANG |
| author_sort | Dong WANG |
| collection | DOAJ |
| description | Based on the comprehensive analysis of core, thin section, logging and seismic data, this study carried out the identification and comparison of Permian Changxing Formation sequences, clarified the typical sedimentary architectures of intra-platform shoal, investigated the vertical and horizontal development and distribution of intra-platform shoal in each sequence, and thus established the sedimentary evolution model of shoal body. The study results are reflected in four aspects. First, there are two complete third-order sequences (SQ1 and SQ2) in Changxing Formation in central Sichuan Basin. SQ1 is generally thick in the north and thin in the south, and SQ2 shows a thickness differentiation trend of “two thicknesses and three thinnesses”. Second, the Changxing Formation in central Sichuan Basin mainly develops intra-platform shoal, inter-shoal sea and intra-platform depression subfacies. In the vertical direction, the intra-platform shoal mainly presents two typical sedimentary sequences: stable superposed and high-frequency interbedded. Third, the stable superimposed sedimentary sequence is developed in the shoal belt at the edge of intra-platform depression, which is composed of two shoal-forming periods and located in the highstand systems tracts (HSTs) of SQ1 and SQ2. The high-frequency interbedded sedimentary sequence is developed in the southern shoal belt of intra-platform depression, which is composed of four shoal-forming periods and mainly located in the HST of SQ2. Fourth, during the SQ1 deposition, the intra-platform shoal was mainly developed at the edge of the intra-platform depression on the north side of the study area, and the inter-shoal sea subfacies was mainly developed on the south side. During the SQ2 deposition, the intra-platform shoal was widely developed in the area, forming two nearly parallel intra-platform shoal belts. The study results provide direction and ideas for exploration of Changxing Formation intra-platform shoal reservoirs in central Sichuan Basin. |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-04-09T17:20:30Z |
| publishDate | 2023-04-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Petroleum Exploration and Development |
| spelling | doaj.art-67cb733ff17f4d71ab9b9b65ddbb9da82023-04-19T04:22:13ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042023-04-01502388403Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW ChinaDong WANG0Hong LIU1Song TANG2Jinhao BAI3Gang ZHOU4Zhengyong LI5Feng LIANG6Xiucheng TAN7Chao GENG8Ying YANG9State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China; Sichuan Natural Gas Geology Key Laboratory, Southwest Petroleum University, Chengdu 610500, ChinaSichuan Natural Gas Geology Key Laboratory, Southwest Petroleum University, Chengdu 610500, China; Southwest Petroleum University, Division of Key Laboratory of Carbonate Reservoirs, CNPC, Chengdu 610500, China; Corresponding authorCentral Sichuan Oil and Gas District, PetroChina Southwest Oilfield Company, Suining 629000State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China; Sichuan Natural Gas Geology Key Laboratory, Southwest Petroleum University, Chengdu 610500, ChinaResearch Institute of Petroleum Exploration and Development, PetroChina Southwest Oilfield Company, Chengdu 610041, ChinaCentral Sichuan Oil and Gas District, PetroChina Southwest Oilfield Company, Suining 629000Gas Production Administrative Department of Northern Central Sichuan Gas District, PetroChina Southwest Oilfield Company, Suining 629000, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China; Southwest Petroleum University, Division of Key Laboratory of Carbonate Reservoirs, CNPC, Chengdu 610500, ChinaSouthern Sichuan Gas District, PetroChina Southwest Oilfield Company, Luzhou 646000, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China; Sichuan Natural Gas Geology Key Laboratory, Southwest Petroleum University, Chengdu 610500, ChinaBased on the comprehensive analysis of core, thin section, logging and seismic data, this study carried out the identification and comparison of Permian Changxing Formation sequences, clarified the typical sedimentary architectures of intra-platform shoal, investigated the vertical and horizontal development and distribution of intra-platform shoal in each sequence, and thus established the sedimentary evolution model of shoal body. The study results are reflected in four aspects. First, there are two complete third-order sequences (SQ1 and SQ2) in Changxing Formation in central Sichuan Basin. SQ1 is generally thick in the north and thin in the south, and SQ2 shows a thickness differentiation trend of “two thicknesses and three thinnesses”. Second, the Changxing Formation in central Sichuan Basin mainly develops intra-platform shoal, inter-shoal sea and intra-platform depression subfacies. In the vertical direction, the intra-platform shoal mainly presents two typical sedimentary sequences: stable superposed and high-frequency interbedded. Third, the stable superimposed sedimentary sequence is developed in the shoal belt at the edge of intra-platform depression, which is composed of two shoal-forming periods and located in the highstand systems tracts (HSTs) of SQ1 and SQ2. The high-frequency interbedded sedimentary sequence is developed in the southern shoal belt of intra-platform depression, which is composed of four shoal-forming periods and mainly located in the HST of SQ2. Fourth, during the SQ1 deposition, the intra-platform shoal was mainly developed at the edge of the intra-platform depression on the north side of the study area, and the inter-shoal sea subfacies was mainly developed on the south side. During the SQ2 deposition, the intra-platform shoal was widely developed in the area, forming two nearly parallel intra-platform shoal belts. The study results provide direction and ideas for exploration of Changxing Formation intra-platform shoal reservoirs in central Sichuan Basin.http://www.sciencedirect.com/science/article/pii/S1876380423603957Sichuan BasinPermian Changxing Formationintra-platform shoalsequence stratigraphic frameworktypical sedimentary sequencesedimentary evolution model |
| spellingShingle | Dong WANG Hong LIU Song TANG Jinhao BAI Gang ZHOU Zhengyong LI Feng LIANG Xiucheng TAN Chao GENG Ying YANG Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China Petroleum Exploration and Development Sichuan Basin Permian Changxing Formation intra-platform shoal sequence stratigraphic framework typical sedimentary sequence sedimentary evolution model |
| title | Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China |
| title_full | Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China |
| title_fullStr | Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China |
| title_full_unstemmed | Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China |
| title_short | Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin, SW China |
| title_sort | sedimentary architecture and distribution of intra platform shoal in sequence framework of permian changxing formation in central sichuan basin sw china |
| topic | Sichuan Basin Permian Changxing Formation intra-platform shoal sequence stratigraphic framework typical sedimentary sequence sedimentary evolution model |
| url | http://www.sciencedirect.com/science/article/pii/S1876380423603957 |
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