The Distribution Characteristics of the Epikarst Reservoir in Lunnan Ordovician Buried Hill
详细信息
- 责任者：Chen Lixin (Research Institute of Petroleum Exploration & Development ; Tarim Oilfield Company ; PetroChina ; Korla 841000 ; China) ; Pan Wenqing
- 刊名：Carsologica Sinica
- 出版年：2011
- 卷期：30(3)
- 关键词：碳酸盐岩储集层 ; carbonate reservoirs ; 岩溶环境 ; karst environment ; 塔里木盆地 ; Tarim Basin
- 页码：p.327-333
- 图表：5 illus., 9 refs.
- 分类号：1003
- issnNo：ISSN1001-4810
- isbnNo：CN45-1157/P
摘要
With the study on the formation and distribution characteristics of epikarst in Lunnan ancient weathering crust and its influence factors, the results show that epikarst belt characterized by well developed karst fracture-cave system with certain connectivity, is range from 0 to 40 m under the ancient weathering surface, which is the karst reservoir well developed part. The karst effective reservoir space is mainly corrosion pore,small-scale cave and corrosion fissure. Under the different paleo-topography and paleo-hydrodynamic conditions, the thickness and karst shape of the epikarst, as well as scale and filling characteristics of karst fracture-cave system in the epikarst are different.
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