岩性油气藏 ›› 2018, Vol. 30 ›› Issue (1): 133–139.doi: 10.3969/j.issn.1673-8926.2018.01.013

• 技术方法 • 上一篇    下一篇

川东北元坝东部须四段裂缝型致密砂岩储层预测

章惠, 关达, 向雪梅, 陈勇   

  1. 中国石化石油物探技术研究院, 南京 210014
  • 收稿日期:2017-06-29 修回日期:2017-08-20 出版日期:2018-01-21 发布日期:2018-01-21
  • 第一作者:章惠(1987-),女,硕士,工程师,主要从事地震资料解释及储层预测方面的研究工作。地址:(210014)江苏省南京市江宁区上高路219号。Email:zhanghui714@126.com。
  • 基金资助:
    中国石化石油物探技术研究院课题“元坝东三维地震资料解释”（编号：34550004-13-FW0399-0001）资助

Prediction for fractured tight sandstone reservoir of Xu 4 member in eastern Yuanba area,northeastern Sichuan Basin

ZHANG Hui, GUAN Da, XIANG Xuemei, CHEN Yong   

  1. Sinopec Geophysical Research Institute, Nanjing 210014, China
  • Received:2017-06-29 Revised:2017-08-20 Online:2018-01-21 Published:2018-01-21

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摘要： 裂缝型致密砂岩储层是四川盆地三叠系须家河组重要的储层类型，由于该类储层具有低孔、低渗、强非均质性特征，其储层的预测是川东北油气勘探开发的重点和难点。为准确预测该类储层的分布，提出了“相控找砂，砂中找缝”的“两步法”技术思路，针对目标靶区，综合地质地震资料开展砂体展布及裂缝预测。该方法利用地震多属性综合与相控地震反演技术，定性和定量预测有利砂体分布区；结合叠前叠后裂缝检测技术、基于断-缝联系法和储-盖差异法的断裂-裂缝有效性评价技术，评价断裂-裂缝发育带；最终综合有利砂体和裂缝分布区圈定优质储层发育带。预测结果经后期钻井证实可靠性较高，表明该技术思路对裂缝型致密储层预测具有借鉴意义。

关键词: 碳酸盐胶结物, 储层质量, 平湖组, 西湖凹陷

Abstract: The tight-fracture reservoir is an important reservoir type of Triassic Xujiahe Formation in Sichuan Basin. Since the reservoir has low porosity,low permeability and strong heterogeneity characteristics,the accurate prediction of properties of Xujiahe Formation is the key and difficult point of oil and gas exploration and development in northeastern Sichuan Basin. Facing with these problems,We proposed a theoretical workflow of reservoir prediction. The main idea of our workflow is to define sand in face and define fracture in sand. Firstly,the distribution of favorable sand was predicted by seismic attributes and seismic inversion on the basis of facies-controlled techniques;then using pre-stack and post-stack technology to predict multi-scale fractures,at the same time,based on the method of relation of fault-fracture and difference of reservoir-cap to evaluate effective faultfracture system;Finally,considering the prediction result of sand and fractures point out the favorable exploration target area. The reliability of our method has been testified by comparing with drilling data,and we believe our method can be used to predict others tight sandy reservoir.

Key words: carbonate cements, reservoir quality, Pinghu Formation, Xihu Sag

中图分类号: 

  • P631.4
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