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天然气地球科学

• 天然气勘探 • 上一篇    下一篇

多方位AVO裂缝检测技术在汪家屯地区应用及效果

王鹏,王志章，潘仁芳，纪友亮，段文浩，金吉能   

  1. 1.中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249；
    2.长江大学油气资源与勘查技术教育部重点实验室,湖北 武汉 430100;
    3.中石油煤层气有限责任公司,北京 100028
  • 收稿日期:2013-10-22 修回日期:2014-02-14 出版日期:2014-06-10 发布日期:2014-06-10
  • 通讯作者: 王鹏,blur_317@163.com. E-mail:blur_317@163.com.
  • 作者简介:王鹏（1986-），男，陕西神木人，博士研究生，主要从事油气藏开发地质研究. E-mail：blur_317@163.com.
  • 基金资助:
    国家科技重大专项（编号:2008ZX05007-002）资助.
     

     

Application and Effect of Multi-azimuth AVO Fractural Detection Techniquein Wangjiatun Field

WANG Peng，WANG Zhi-zhang，PAN Ren-fang，JI You-liang，DUAN Wen-hao，JIN Ji-neng   

  1. 1.State Key Laboratory of Petroleum Resources and Prospecting//China University of Petroleum,
    Beijing 102249,China;2.Key Laboratory of Exploration Technologies for Oil and Gas Resources,
    Ministry of Education//Yangtze University,Wuhan 430100,China;
    3.Petrochina Coalbed Methane Campany Limited,Beijing 100028,China
  • Received:2013-10-22 Revised:2014-02-14 Online:2014-06-10 Published:2014-06-10

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702

摘要：

汪家屯气田营城组为非均质性强的低孔渗火山岩储层，裂缝对储层气孔和溶蚀孔洞起着非常重要的沟通作用，由于储层具有孔隙、裂缝双重介质特征，孔、缝间配置关系复杂多样，目前常用的利用叠后资料对裂缝的进一步精细描述及量化来识别小尺度裂缝的方法已经无法满足气藏的评价需求。提出了通过在处理前将地震资料重新进行方位角分选，提取到不受流体影响的横波差异属性，最终将变化处理后的属性参数以强度形式来表征，并以此来预测裂缝的发育情况的方法。应用多方位AVO裂缝检测技术预测了汪家屯地区营城组火山岩储层裂缝发育情况，相比传统相干技术，多方位AVO裂缝检测技术具有高的分辨率和识别小尺度裂缝的特点，预测结果与实际井解释结果也具有高的吻合度。

关键词: 汪家屯气田, 裂缝, 方位角, 属性, 多方位AVO, 相干体

Abstract:

Reservoirs of Yingcheng group of Wangjiatun Gasfield are strong non-homogeneous volcanic reservoirs with low porosity and low permeability,in which cracks play a very important role for the communication between porosity and corrosion holes.Because of the dual media features of pores and cracks,between which configuration relations are complex and diverse,using post-stack data has been unable to meet the demands of gas reservoir evaluation to make further fine description of crack and quantitatively identify small-scale cracks.In this study,we resorted azimuth before processing the seismic data,extracted transverse difference properties which are not affected by fluid,finally we characterized the attribute parameter changes after processing in the form of strength,and predicted the development of the of cracks;Using multi-azimuthal AVO crack detection technology,we predicted the fracture development of the volcanic reservoir of Yingcheng Group of Wangjiatun region.Compared to conventional coherent technology,multi-azimuthal AVO crack detection technology has characteristics of high resolution and identification of small-scale cracks.The predicted results also have a high degree of agreement with actual well interpret results.

Key words: Wangjiatun Gasfield, Fracture, Azimuth, Attribute, Multi-azimuthal AVO, Coherence cube

中图分类号: 

  • TE132.1+4

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