塔里木盆地阿北—顺北区块东河砂岩预测方法研究
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摘要
讨论了塔里木盆地阿北—顺北区块东部东河砂岩预测的方法。由于本区二维地震测网密度较稀,探井很少,且东河砂岩分布复杂,目的层埋藏较深,压实程度较大等地震地质特点,采用常规的波阻抗反演方法很难取得较好的预测效果。因此,本文采用了由波阻抗反演出发,运用频谱成像技术预测东河砂岩的空间展布位置,结合常规的波阻抗反演所得到的速度求取储层厚度,应力场分析预测储层的运移通道和储层的储集空间发育情况,以及地震反射振幅吸收衰减分析预测储层的含油气性等技术手段,对本区东河砂岩的发育、分布和含油气性进行预测、描述,取得了较好的效果。
Donghe sandstone prediction methods in the east of Abei-Shunbei tract of He'nan exploration region of Tarim basin are discussed in this paper. Due to the following characteristics of rare seismic survey,low well number,complex distribution of Donghe sandstone,deep burial depth and serious compaction,it is difficult to get good prediction effect with common methods of impedance inversion. In this paper,a new method with frequency image technique is introduced. It can be used to predict space location of the Donghe sandstone,together with velocity calculated with impedance inversion technique,getting reservoir thickness. Shift channel and space development of reservoir are predicted with stress analysis. Petroleum bearing ability is predicted with the absorption attena analysis of seismic reflect amplitude. The above techniques have gained good results in the prediction of generation,distribution and petroleum bearing ability of Donghe sandstone.
Donghe sandstone prediction methods in the east of Abei-Shunbei tract of He'nan exploration region of Tarim basin are discussed in this paper. Due to the following characteristics of rare seismic survey,low well number,complex distribution of Donghe sandstone,deep burial depth and serious compaction,it is difficult to get good prediction effect with common methods of impedance inversion. In this paper,a new method with frequency image technique is introduced. It can be used to predict space location of the Donghe sandstone,together with velocity calculated with impedance inversion technique,getting reservoir thickness. Shift channel and space development of reservoir are predicted with stress analysis. Petroleum bearing ability is predicted with the absorption attena analysis of seismic reflect amplitude. The above techniques have gained good results in the prediction of generation,distribution and petroleum bearing ability of Donghe sandstone.
引文
[1]王娟,王西文,苏明军,等.滚动勘探开发阶段的储层反演技术[J].石油地球物理勘探,2003,38(增刊):42￣46
[2]俞寿朋.高分辨率地震勘探[M].北京:石油工业出版社,1992
[3]熊翥.我国物探技术的进步及进展[J].石油地球物理勘探,2004,39(3):354￣358
[4]徐怀大.寻找非构造油气藏的新思路[J].勘探家,1996,(1):43～45
[2]俞寿朋.高分辨率地震勘探[M].北京:石油工业出版社,1992
[3]熊翥.我国物探技术的进步及进展[J].石油地球物理勘探,2004,39(3):354￣358
[4]徐怀大.寻找非构造油气藏的新思路[J].勘探家,1996,(1):43～45
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