Research on Faults and Oil and Gas in Niuxintuo Sag of Liaohe Depression

Abstract

Abstract: Niuxintuo Sag is the first rifting sag in the west of Liaohe Depression, of which Es4 is the most complete. Faults research shows that the uplift and dextral strike-slip of structural cycles of Eocene and Late Oligocene leads to the formation of reverse faults on the east and west sides of Niuxintuo Sag. A series of extrusion, strike-slip, and extensional faults come into being, different types of structural styles are formed, such as extrusion structure, flower structure, and nasal fracture structure. Fracture determines the distribution of source rocks and reservoirs as well as the oil and gas transporting system. The development characteristics and hydrocarbon potential of different petroliferous zones are determined by different fault zones. So the research on development characteristics of different fault zones is of great significance to the optimization and evaluation of favorable petroliferous zones and traps.

Key words: fault structure, flower structure, source rocks, transporting system, oil and gas reservoir, Niuxintuo Sag, Liaohe Depression, oil and gas distribution

CLC Number:

P618.13

Wang Guangming. Research on Faults and Oil and Gas in Niuxintuo Sag of Liaohe Depression[J]. China Petroleum Exploration, 2009, 14(2): 31-35,6.

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Research on Faults and Oil and Gas in Niuxintuo Sag of Liaohe Depression

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