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

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• 作者：Chao Wang ; Yongchao Lu ; Hongguang Huang ; Fengcun Xing ; Lei Chen…
• 关键词：dissolved pore ; fracture ; reef ; beach system ; seismic attribute ; Changxing Formation ; Yuanba area ; Northeast Sichuan Basin
• 刊名：Journal of Earth Science
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：26
• 期：3
• 页码：373-383
• 全文大小：6,961 KB
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• 作者单位：Chao Wang (1) (2)
  Yongchao Lu (1) (2)
  Hongguang Huang (3)
  Fengcun Xing (4) (5)
  Lei Chen (1) (2)
  Xuebin Du (1) (2)
  Zhanhong Liu (1) (2)
  Wenjun Zhang (6)
  
  1. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, 430074, China
  2. Faculty of Earth Resource, China University of Geosciences, Wuhan, 430074, China
  3. Administrative Department, CNOOC Zhanjiang Branch Company, Zhanjiang, 524057, China
  4. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, 610059, China
  5. State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, 610059, China
  6. SINOPEC Exploration Southern Company, Chengdu, 610041, China
  
• 刊物主题：Earth Sciences, general; Geotechnical Engineering & Applied Earth Sciences; Biogeosciences; Geochemistry; Geology;
• 出版者：Springer Berlin Heidelberg
• ISSN：1867-111X

文摘

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.