Journal
JOURNAL OF GEOPHYSICS AND ENGINEERING
Volume 12, Issue 3, Pages 502-514Publisher
OXFORD UNIV PRESS
DOI: 10.1088/1742-2132/12/3/502
Keywords
extensional structure system; structural modeling; structural restoration; sub-seismic low-displacement extensional faults or fractures; quantitative identification; technique processes
Categories
Funding
- National Basic Research Program of China [2014CB239201]
- National Science and Technology Major Project of China [20011ZX05030-005-003]
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Quantitative characterization of complex sub-seismic extensional structure system that essentially controls petroleum exploitation is difficult to implement in seismic profile interpretation. This research, based on a case study in block M of Myanmar, established a set of quantitative treatment schemes and technique processes for the identification of subseismic low-displacement (SSLD) extensional faults or fractures upon structural deformation restoration and geometric inversion. Firstly, the master-subsidiary inheritance relations and configuration of the seismic-scale extensional fault systems are determined by analyzing the structural pattern. Besides, three-dimensional (3D) pattern and characteristics of the seismic-scale extensional structure have been illustrated by a 3D structure model built upon seismic sections. Moreover, according to the dilatancy obtained from structural restoration on the basis of inclined shear method, as well as the fracture-flow index, potential SSLD extensional faults or fractures have been quantitatively identified. Application of the technique processes to the sub-seismic low-displacement extensional structures in block M in Myanmar is instructive to quantitatively interpret those SSLD extensional structure systems in practice.
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