Three-Dimensional Geophysical Characterization of
Deeply Buried Paleokarst System in the Tahe Oilfield,
Tarim Basin, China
发布时间：2024-01-08
元数据
名 称
Three-Dimensional Geophysical Characterization of
Deeply Buried Paleokarst System in the Tahe Oilfield,
Tarim Basin, China
科技资源标识
CSTR:11738.14.NCDC.XDA14.PP6165.2024
DOI
10.3390/w11051045
数据共享方式
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摘 要
Paleokarst reservoirs are the major type of the Ordovician carbonate reservoirs in the Tahe Oilfield. Due to the strong heterogeneity in distribution, it is a real challenge to detect the spatial distribution of paleokarst reservoirs, especially those deeply buried more than 5500 m in the Tahe area. Based on the abundant core samples, this paper first described the structure of paleocaves drilled by well. Second, after time–depth conversions, the results from drilled wells were tied to three-dimensional (3D) seismic datasets, and then the threshold of host rocks and caves in wave impedance were identified. Third, the seismic-scale mapping and visualization of the paleokarstreservoirs were achieved by tracing the distribution of paleocaves. This approach was applied inthe well T403 area, and the structure of the paleokarst, especially the runoff zone, was interpreted.3D structure and spatial distribution of the paleokarst system was demonstrated by plane, vertical,and 3D models. Additionally, according to the hydrology genetic relationships, the paleocaves in the runoff zone were divided into sinkholes, main channel, and branch channel. The approach of a3D geophysical characterization of a deeply buried paleokarst system can be applicable to Tahe andother similar paleokarst oilfields, which will guide hydrocarbon exploration in paleokarst reservoirs.
田飞,王中兴. Three-Dimensional Geophysical Characterization of
Deeply Buried Paleokarst System in the Tahe Oilfield,
Tarim Basin, China. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.14.NCDC.XDA14.PP6165.2024.
田飞,王中兴. Three-Dimensional Geophysical Characterization of
Deeply Buried Paleokarst System in the Tahe Oilfield,
Tarim Basin, China. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.3390/w11051045.
本作品采用
知识共享署名
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CSTR:11738.14.NCDC.XDA14.PP6165.2024
10.3390/w11051045