天然气地球科学

• 天然气勘探 • 上一篇    下一篇

塔中地区鹰山组储层分布规律与地震预测

欧阳永林,曾庆才,郭晓龙,代春萌,潘春孚,李璇,包世海,李新豫   

  1. 中国石油勘探开发研究院廊坊分院,河北 廊坊065007
  • 收稿日期:2014-11-25 修回日期:2015-01-12 出版日期:2015-05-10 发布日期:2015-05-10
  • 作者简介:欧阳永林(1958-),男,湖南衡阳人,教授级高级工程师,主要从事天然气藏勘探与开发研究. E-mail:ylinoy69@petrochina.com.cn.
  • 基金资助:

    国家重大科技专项(编号:2011ZX05013)资助.

Reservoirs Distribution and Seismic Prediction of the Lower Ordovician Yingshan Formation at the Tazhong Area

OUYANG Yong-lin,ZENG Qing-cai,GUO Xiao-long,DAI Chun-meng,PAN Chun-fu,LI Xuan,BAO Shi-hai,LI Xin-yu   

  1. Langfang Branch of PetroChina Research Institute of Petroleum Exploration and Development, Langfang 065007,China
  • Received:2014-11-25 Revised:2015-01-12 Online:2015-05-10 Published:2015-05-10

摘要:

塔中气田以往以“串珠”作为钻探目标,早期取得了一定的效果,但在气田开发中发现“串珠”并不是含气储层的主要特征,需要对塔中气田鹰山组储层分布规律重新认识。研究认为,鹰山组受差异溶蚀和走滑断层分割双重因素控制,储层在地震剖面上表现为“层状”,平面上为“块状”分布特点,而不是呈孤立分布的“串珠”。鹰山组气层、水层在常规地震剖面上振幅差异小,传统的“亮点”技术无法对含气储层有效识别。通过实际测井资料进行多参数交会分析和AVO模型正演说明,泊松比为鹰山组储层含气性最敏感的弹性参数,气层地震反射属于第三AVO类型,用AVO近远道表征和主振幅主频率地震预测技术可以有效预测鹰山组气层,在研究区见到很好的效果,并得到了钻井的证实。

关键词: 碳酸盐岩, 鹰山组储层, 差异溶蚀, 泊松比, 近远道表征

Abstract:

Taking “Beads” as exploration objects,Tazhong gas field achieved some effects.With the development of exploitation,we found that “Beads” are not the main features of gas reservoirs,and “Beads” are fewer and fewer.We need to recognize the distribution regularities of gas reservoirs to seek the effective prediction methods.This paper shows that,Tazhong area has been uplifting after the sedimentation of Yingshan Formation,which is influenced by the interaction of differential corrosion and segmentation of strike-slip faults,resulting in the strong heterogeneity of reservoir distribution and the complexity of gas-water distribution.Despite the Yingshan reservoir has complicated distribution and strong anisotropy,through the logging data analysis we found the most sensitive pre-elastic parameters of Yingshan gas reservoirs-Poisson's ratio.AVO modeling shows Yingshan gas reservoirs have three types of AVO abnormal.That means the “Near-Far AVO characterization” and the “Major amplitude & Major frequencies” can predicate the gas reservoir and increase the drilling rate.It is significant in the carbonate exploitation.

Key words: Carbonate, Reservoirs of Yingshan Formation, Differential corrosion, Near-far offset traces characteristization, Gas and water identification

中图分类号: 

  • TE122.1

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