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- Title
Characterization of natural gas migration in the ancient buried hill, east deep water area of Qiongdongnan Basin.
- Authors
Xing LI; Jun GAN; Xi-bin YANG; Gang LIANG; Zi-ling WANG
- Abstract
In recent years, there has been a significant breakthrough in natural gas exploration of east deep water area of Qiongdongnan Basin, but the research on the characterization of natural gas migration is still lacking, which limits the effectiveness of further exploration. Through the analysis of gas source correlation, natural gas migration path and quantitative accumulation characterization in the east deep water area, the mechanism of natural gas migration and accumulation in the paleo buried hills of Pre-Paleogene was clarified. The research shows that the natural gas of Paleogene and paleo-buried hill in eastern part of the deep water mainly originated from highefficiency hydrocarbon-generating stoves which located in slope-near concave zone of the Songnan-Baodao Sag. Natural gas has accumulated under the action of overpressure and buoyancy by a large scale intrusion tectonic ridges including continuous littoral sandstone, buried hill sandy weathered crust and weathered fracture moreover quantitative calculation of fluid potential and transport system differences indicate that the south Songnan low uplift is the main migration direction. It is believed that the most favorable area for natural gas exploration in east deep water is ancient buried hill of Y1 area near the slope zone.
- Subjects
GAS migration; NATURAL gas prospecting; NATURAL gas; CHEMICAL weathering; NATURAL gas processing plants; WATER; GAS analysis
- Publication
Natural Gas Geoscience, 2020, Vol 31, Issue 7, p9
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2020.02.007