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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 3    March 2016

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Using structure restoration maps to comprehensively identify potential faults and fractures in compressional structures
Ou Cheng-hua(欧成华)1, Chen Wei(陈伟)1, Li Chao-chun(李朝纯)2

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
(Southwest Petroleum University), Chengdu 610500, China;
2. State-owned Asset Management Office (Southwest Petroleum University), Chengdu 610500, China

Abstract:Faults and fractures of multiple scales are frequently induced and generated in compressional structural system. Comprehensive identification of these potential faults and fractures that cannot be distinguished directly from seismic profile of the complex structures is still an unanswered problem. based on the compressional structural geometry and kinematics theories as well as the structural interpretation from seismic data, a set of techniques is established for the identification of potential faults and fractures in compressional structures. Firstly, three-dimensional (3D) patterns and characteristics of the faults directly interpreted from seismic profile were illustrated by 3D structural model. Then, the unfolding index maps, the principal structural curvature maps, and tectonic stress field maps were obtained from structural restoration. Moreover, potential faults and fractures in compressional structures were quantitatively identified relying on comprehensive analysis of these three maps. Successful identification of the potential faults and fractures in Mishrif limestone formation and in Asmari dolomite formation of Buzurgan anticline in Iraq demonstrates the applicability and reliability of these techniques.

 

Key words: potential fault and fracture; comprehensive identification; structure restoration maps; 3d structural modeling; compressional structures

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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