利用曲率类属性预测储层裂缝的流程及应用实例

doi:10.11720/wtyht.2020.1378

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Abstract

Based on the curvature attribute,this paper proposes for the first time a set of processes for predicting "fracture zones-fracture development direction-fracture initiation".Firstly,the curvature calculation of the seismic data is carried out to predict the developing area of the fractured reservoir;then,the rose diagrams of the curvature data are calculated and compared with the rose diagrams from the log data to determine the direction of fracture;two dominant directions of fracture development are selected according to the directions of fracture development,and then the intensity properties of the two dominant directions of the curvature volume are calculated according to the main directions of fracture development;finally,the two azimuth intensity attributes are intersected with productivity respectively,and the one with the better correlation is the opening azimuth of the fractures.The above method was applied to K oilfield in Kazakh.The authors made the prediction that the fracture-vug reservoir is mainly developed in the eastern part of K oilfield,while the fracture reservoir is mainly developed in the western part,and that there are mainly two groups of fractures developed in the NW and the NW direction,of which the opening property of the NE trend fractures is good in the north part,while the opening property of the NW trend fractures is good in the south part.According to the prediction results,commercial oil flow was detected in the two proposed wells.

Key words： fractured reservoir anisotropy curvature azimuth intensity rose diagram

Received: 12 August 2019 Published: 26 October 2020

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	Articles by authors
	Zhi-Gang CHEN
	Wen-Jie MA
	Hong-Zhong ZHAO
	Feng XU
	Quan-Zhang CUI
	Hui MA
	Xing SUN

Cite this article:

Zhi-Gang CHEN,Wen-Jie MA,Hong-Zhong ZHAO, et al. A technical workflow of fracture prediction with curvature-related attributes and its applications[J]. Geophysical and Geochemical Exploration, 2020, 44(5): 1201-1207.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1378 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I5/1201

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