Characteristics of Paleo-structure and Hydrocarbon Accumulation of Marine Sequence in the Middle and Upper Yangtze Region(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2016年第03期
- Page:
- 365-377
- Research Field:
- 基础地质与矿产地质
- Publishing date:
Info
- Title:
- Characteristics of Paleo-structure and Hydrocarbon Accumulation of Marine Sequence in the Middle and Upper Yangtze Region
- Author(s):
- ZHOU Yan; LI Shuang-jian; ZHANG Rong-qiang; YE Li-qin; CHAI Tong
- 1. Laboratory of Structural and Sedimentological Reservoir Geology, Petroleum Exploration and Production Research Institute of SINOPEC, Beijing 100083, China; 2. School of Earth Sciences and Engineering, Xian Shiyou University, Xi’an 710065, Shaanxi, China
- Keywords:
- paleo-structure; marine stratum; Yangtze Plate; preservation condition; Paleozoic; petroleum accumulation; exploration direction; favourable area
- PACS:
- P618.13
- DOI:
- -
- Abstract:
- The uplift and depression patterns are early control factors of hydrocarbon accumulation and preservation conditions in marine sequence. Based on the geology, drilling, seismic and test data, the depth maps of critical interface, erosion degree maps, paleo geological map, superimposed tectonic map and evolution profiles of paleo-structure were compiled, and the uplift and depression patterns of marine sequence were studied, and the petroleum migration and accumulation, and preservation conditions were analyzed. The results show that the uplift and depression patterns in Caledonian are dominated by EW and NE directions, and appear four depressions including West Hubei depression, South Sichuan depression, Southeast Guizhou depression and North Jianghan Basin depression, and three uplifts including Jiangnan-Xuefeng uplift, Middle Guizhou uplift and Leshan-Longnusi uplift; paleo-uplifts and large-scale slope belts with long-term stability in the southern and northern edges of Yangtze Plate, controls the hydrocarbon migration and accumulation of Lower Cambrian source rocks; the tectonic inversion of Indosinian to Caledonian is obvious, and the Indosinian depression locates on the Caledonian paleo-uplift; the uplift and depression patterns in Yangtze region are dominated by SN and NE directions, forming Luzhou uplift, West Sichuan depression, and West Hunan and Hubei-Southeast Guizhou depression; the paleo-uplift formed controls the hydrocarbon migration and accumulation of Lower Silurian and Lower Permian source rocks.
Last Update: 2016-06-02