西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

井震反演识别复合砂体内单一河道

徐立恒,郝兰英,刘江玉   

  1. 中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712
  • 出版日期:2014-04-01 发布日期:2014-04-01
  • 基金资助:

    国家重点基础研究发展计划(2009CB219307)。

Recognition of Single Channel in Composite Sand Body Based on
Well-seismic and Inversion

Xu Liheng, Hao Lanying, Liu Jiangyu   

  1. Exploration and Development Research Institute,Daqing Oilfield Company Limited,Daqing,Heilongjiang 163712,China
  • Online:2014-04-01 Published:2014-04-01

摘要:

随着开发井网依次加密,储层砂体分布趋势逐渐明确,在纵向上可根据测井资料准确地识别砂体,但横向上
很难确定井间砂体的分布特征。针对连井剖面上进行单一河道识别任务重且存在多解性的难题,提出了采用井震结
合反演技术来预测复合砂体内单一河道的边界,再进一步利用测井曲线特征对河道边界进行验证。基于该思路,在反
演剖面上识别了复合砂体内单一河道的4 个典型标志,并依据地震反演属性平面图上的砂岩变差带发育位置,清晰识
别出8 条同层不同期单一河道,且单一河道识别成果在完善油田注采关系、挖潜剩余油上见到良好效果,展现了较好
的应用前景。

关键词: 井震结合, 反演技术, 单一河道, 复合砂体, 识别

Abstract:

With the well pattern successively infills,the distributing tend of reservoir sandbody is gradually determined,the
distributing characteristics of sandbody in vertical direction can be accurately recognized according to the logging data,but
that in horizontal direction is difficulty to be identified. Aiming at the problems of the heavy tasks and the ambiguity on the
recognition of a single channel on well-tie sections,the technique of well-seismic and inversion to predict the boundary of a
single channel in composite sand body was proposed in the paper,and the river channel boundaries were further proved by
the logging curve characteristics. Four typical indicators of the single river channel in composite sand body are recognized
on the inversion sections,8 synchronous but not simultaneous single channels are identified clearly by sandstone poor belt
conditions of the seismic inversion plan. With the single channel recognition achievement,good effects are obtained on the
injection-production relation and remaining oil tapping,which shows a good application prospect.

Key words: well-seismic, inversion, single river channel, composite sand body, recognition