@article{YANG2024, 
author = {Debin YANG and Xinbian LU and Dian BAO and Fei CAO and Yan WANG and Ming WANG and Runcheng XIE},
title = {New insights into the genetic types and characteristics of the Ordovician marine fault-karst carbonate reservoirs in the northern Tarim Basin},
year = {2024},
journal = {Oil & Gas Geology},
volume = {45},
number = {2},
pages = {357-366},
keywords = {genetic type, carbonate rock, fault-karst reservoir, Ordovician, Tarim Basin},
url = {https://www.sciopen.com/article/10.11743/ogg20240204},
doi = {10.11743/ogg20240204},
abstract = {The previously coined fault-karst reservoirs have become new exploration and exploitation targets and types of marine carbonate hydrocarbon reservoirs. However, these reservoirs are significantly different from conventional weathering-crust karst reservoirs and also show diverse reservoir types and structural characteristics themselves. By delving into the differences in the dissolution and tectonic fracturing of fault-karst reservoirs, we categorize these reservoirs into three types: the over-dissolved residual type, the fractured and highly dissolved type, and the highly fractured and weakly dissolved type. Investigations into these types of fault-karst reservoirs reveal that these reservoirs significantly differ in dissolution intensity, fracture and vug sizes, cumulative oil production, formation energy, and fracture-vug connectivity. Furthermore, the distribution of over-dissolved residual fault-karst reservoirs is influenced by both weathering crust unconformities and the longitudinal dissolution of fault zones. In contrast, the formation and distribution of the remaining two types, manifesting a minimal association with unconformities and tectonic locations, are primarily governed by the fracturing and dissolution intensity of dissolved fault zones. Specifically, large-scale caves occur in the cores of dissolved fault zones, gradually transitioning to fractured-vuggy and fractured reservoirs towards their both sides.}
}