Structural Simulation of Fold-thrust Belt in Northwestern Taiwan through Distinct Element Method
Abstract
The main oil and gas production structure is a series of parallel anticlines in NNE-SSW orientation in western foothills, part of Taiwan fold-thrust belt. Chinshui and Chuhuangkeng anticlines are the most productive structures among them. The CPC (Chinese Petroleum Corporation) surmises that Pakuali structure, which is east of Chuhuangkeng anticline, could also have the potential to be a production structure. Nevertheless, it is inefficient to carry out geophysical exploration and field investigation in the inner western foothills where Pakuali structure is located. Taking advantage of the abundant surface and subsurface geological data of anticlines west of the Pakuali structure, it is legitimate to reason the tectonic characteristics and structural evolution of the fold-thrust belt. The aim of this study is to construct a geological cross-section which can be balanced kinematically and simulated mechanically by MOVE commercial software and PFC2D simulation software. The result of the cross-section shows that Chinshui anticline, Chuhuangkeng anticline, and Pakuali structure are formed by buckling along the decollement under the strata. The distribution of fractures in these anticlines can be delineated base on PFC2D models. It is expected to be helpful for the evaluation of the hydrocarbon potential of Pakuali structure.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.T41E0347C
- Keywords:
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- 1165 Sedimentary geochronology;
- GEOCHRONOLOGYDE: 8169 Sedimentary basin processes;
- TECTONOPHYSICSDE: 8175 Tectonics and landscape evolution;
- TECTONOPHYSICSDE: 8177 Tectonics and climatic interactions;
- TECTONOPHYSICS