FORECAST OF LOWER ORDER FAULTS IN COMPLEX FAULT BLOCK RESERVOIRS BY NUMERICAL SIMULATION OF TECTONIC STRESS FIELD: TAKING M AREA IN NANPU SAG AS AN EXAMPLE

SHANG Lin; LIU Xiao-han; WU Hai-tao; MA Xiao-li; ZOU Juan

Volume 22 Issue 2

Jun. 2016

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Article Navigation > Journal of Geomechanics > 2016 > 22(2): 357-365

SHANG Lin, LIU Xiao-han, WU Hai-tao, et al., 2016. FORECAST OF LOWER ORDER FAULTS IN COMPLEX FAULT BLOCK RESERVOIRS BY NUMERICAL SIMULATION OF TECTONIC STRESS FIELD: TAKING M AREA IN NANPU SAG AS AN EXAMPLE. Journal of Geomechanics, 22 (2): 357-365.

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FORECAST OF LOWER ORDER FAULTS IN COMPLEX FAULT BLOCK RESERVOIRS BY NUMERICAL SIMULATION OF TECTONIC STRESS FIELD: TAKING M AREA IN NANPU SAG AS AN EXAMPLE

1.
Research Institute of Exploration and Development, PetroChina Jidong Oilfied Company, Tangshan 063004, Hebei, China
2.
School of Earth Sciences, China University of Geosciences, Wuhan 430074, China

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Abstract

Abstract

The tectonic stress field of Guantao formation is simulated based on the confirmation of development period and tectonic setting about lower order faults. According to the failure criterion of rock, the favorable development regions of the lower order faults are analyzed through the minor principal stress, the favorable directions are discussed by the plane shear stress, and the tendencies are analyzed by the vertical shear stress. The activity of the third faults in M Area of Nanpu Sag presents obvious segment and generation: The middle part of the above studied region is the main region of the lower order faults owing to the coefficient of the regional NS extension and the regional camber stress by paroxysmal eruption, the east part develops a set of nearly NE-trending lower fault, the west part develops a set of nearly NW-trending fault, and the apparent dip mainly presents north tendency.
- tectonic stress field,
- complex fault block,
- lower order fault,
- Nanpu sag

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