Palaeokarst Reservoirs and Exploration Areas of Maokou Formation in theSoutheast of Sichuan Basin

Abstract

Abstract: The recent exploration breakthrough in the southeast of Sichuan shows that Maokou formation reservoir in Southeast
Sichuan has great exploration potential. The main technical methods are the vertical division，the seismic reflection characteristics
and the recovery palaeogeomorphology. Maokou formation palaeokarst can be divided into vertical vadose zone，horizontal
phreatic zones and deep slow flow zones in the vertical direction. Karst-type reservoirs are largely distributed in vertical vadose
and horizontal phreatic zones. There are featured by“Oblique bright spot”and“catastrophic amplitude”in the seismic
reflection characteristics，which are distributed within Longsheng，Tiantangba and Simianshan areas. Qijiang-Fuling area have
a nice exploration prospect，beacause it is located in east slope of Guandu karst slope.

Key words: Maokou Formation, palaeokarst, palaeogeomorphology, exploration prospect, Sichuan Basin

Guo Xusheng;Li Yuping;Wei Quanchao. Palaeokarst Reservoirs and Exploration Areas of Maokou Formation in theSoutheast of Sichuan Basin[J]. 西南石油大学学报(自然科学版), 2012, 34(6): 0-8.

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Palaeokarst Reservoirs and Exploration Areas of Maokou Formation in theSoutheast of Sichuan Basin

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