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Volume 26 Issue 3
Jul 2015
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Chao Wang, Yongchao Lu, Hongguang Huang, Fengcun Xing, Lei Chen, Xuebin Du, Zhanhong Liu, Wenjun Zhang. New seismic attribute technology for predicting dissolved pore-fracture of deeply buried platform margin reef-beach system in Northeast Sichuan Basin, China. Journal of Earth Science, 2015, 26(3): 373-383. doi: 10.1007/s12583-015-0540-0
Citation: Chao Wang, Yongchao Lu, Hongguang Huang, Fengcun Xing, Lei Chen, Xuebin Du, Zhanhong Liu, Wenjun Zhang. New seismic attribute technology for predicting dissolved pore-fracture of deeply buried platform margin reef-beach system in Northeast Sichuan Basin, China. Journal of Earth Science, 2015, 26(3): 373-383. doi: 10.1007/s12583-015-0540-0

New seismic attribute technology for predicting dissolved pore-fracture of deeply buried platform margin reef-beach system in Northeast Sichuan Basin, China

doi: 10.1007/s12583-015-0540-0
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  • Corresponding author: Hongguang Huang, wangchao0502@163.com
  • Received Date: 02 Jan 2015
  • Accepted Date: 07 May 2015
  • Publish Date: 01 Jun 2015
  • The large reef complexes of the Upper Permian Changxing Formation, with a significant breakthrough for petroleum exploration, are an important target for petroleum exploration in the Yuanba area of the Sichuan Basin in SW China. The storage space types of reef complexes are dominated by the dissolved pore-fracture (DPF). However, using only single geophysical methods, it is difficult to predict effective distribution of DPF. Based on a combination of geological models and geophysics technology, this study proposes two new geophysical methods, including anisotropy coherence technique (ACT) and fracture intensity inversion (FII), to research the characteristics of DPF by facies-controlling in Changxing Formation in Yuanba area. Two major findings are presented as follows: (1) the characteristics of DPF varying with facies are the result of different diagenetic and petrophysical property. The intensity of DPF decreases from reef and bioclastic bank to interbank sea and slope; (2) ACT can qualitatively identify the distribution of DPF with no-directional and dispersed distribution, while FII can quantitatively characterize the intensity of DPF development within various sedimentary facies. When integrated into the geological study, ACT and FII can provide an effective way to predict the distribution of DPF in similar geological settings and the predicted DPF have been supported by the historical well data.

     

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