FRACTURE DEVELOPMENT PREDICTION BASED ON AZIMUTHAL ANISOTROPY ANALYSIS OF PRE-STACK SEISMIC-TAKE XUJIAHE FORMATION OF PUGUANG GAS FIELD FOR EXAMPLE

XIONG Jin-hong; CHEN Cen; CAO Zhan-yuan; TAN Xian-feng; KUANG Hao

2017 Vol. 23, No. 2

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XIONG Jin-hong, CHEN Cen, CAO Zhan-yuan, TAN Xian-feng, KUANG Hao. FRACTURE DEVELOPMENT PREDICTION BASED ON AZIMUTHAL ANISOTROPY ANALYSIS OF PRE-STACK SEISMIC-TAKE XUJIAHE FORMATION OF PUGUANG GAS FIELD FOR EXAMPLE[J]. Journal of Geomechanics, 2017, 23(2): 280-287.

Citation:

FRACTURE DEVELOPMENT PREDICTION BASED ON AZIMUTHAL ANISOTROPY ANALYSIS OF PRE-STACK SEISMIC-TAKE XUJIAHE FORMATION OF PUGUANG GAS FIELD FOR EXAMPLE

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
School of Earth and Space Sciences, Peking University, Beijing 100871, China
3.
Chongqing University of Science & Technology, Chongqing 401331, China
4.
Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences/Key Laboratory of Petroleum Resources Research, Lanzhou 730000, Gansu, China

Received Date: 14 February 2017

Publish Date: 25 April 2017

Abstract

Abstract

In the beginning of this paper, the forward model is established and stimulation is carried out on the fractures from different angles according to the unique lithology characteristics of Xujiahe formation in North Puguang. In view of the different point of azimuthal to simulate the fracture, the rule is summed up that along the direction of the fraction the amplitude of the fraction reduces as the offset increases.Then, the pre-stack seismic data is processed.The velocity analysis and the pre-stack time migration stack are processed to meet the requirement of fracture prediction.Finally, based on the analysis of the variations the amplitude with azimuth and the analysis of the variations the frequency with azimuth, through invesion, the data cubes of strike direction and the density of reservoir fractures are obtained. Guided by the fracture prediction, Pulu1-2H Well was deployed, and a good anticipated effect was achieved.
- Puguang gas field /
- Xujiahe formation /
- pre-stack seismic /
- fracture prediction

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References

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