3D Structural Characteristics in the Middle of Kelasu Structural Belt in Kuqa Depression

Abstract

Abstract: Kelasu structural belt is located in the northern margin of Kuqa depression. Kela-1 structure and Kela-2 structure are anticlinal traps, which are under salt layer in Kumugeliemu formation of the Eogene in Kelasu structural belt. However, the drilling results are very different between the two structures. It shows that transition structure zone and structural accommodation zone exist between Kela-1 and Kela-2 structures by structural seismic interpretation and 3D structural models. The structural accommodation zone results in the complication of Kelasu anticline. At the side joint between the two structures forms transfer zone which occurs in forms of fault and fold. And anticlinal accommodation zone exists between the transfer zone and Kela-2 structure, which is the main oil-gas trap in Kela-2 structure.

Key words: Kuqa depression, Kelasu structural belt, 3D structural modeling, transfer zone, structural accommodation zone, 3D seismic interpretation

CLC Number:

P631.445.6

BIAN Hai-guang, LI Ben-liang, JIN Jiu-qiang, TIAN Ji-qiang, CHEN Zhu-xin, GUAN Shu-wei. 3D Structural Characteristics in the Middle of Kelasu Structural Belt in Kuqa Depression[J]. Xinjiang Petroleum Geology, 2011, 32(4): 359-362.

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