METHOD AND TECHNIQUE FOR PREDICTION OF SUPER-DEEP CARBONATE RESERVOIRS IN NORTH TARIM BASIN

Li ZongJie; Wang Qinchong

doi:10.11743/ogg20020107

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METHOD AND TECHNIQUE FOR PREDICTION OF SUPER-DEEP CARBONATE RESERVOIRS IN NORTH TARIM BASIN
Vol. 23, Issue 1, Pages: 35-40(2002)
Online First：25 March 2002，

Published：2002
DOI： 10.11743/ogg20020107
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DOI：

Li ZongJie, Wang Qinchong. METHOD AND TECHNIQUE FOR PREDICTION OF SUPER-DEEP CARBONATE RESERVOIRS IN NORTH TARIM BASIN[J]. 2002, 23(1): 35-40. DOI： 10.11743/ogg20020107.

摘要

塔北塔河油田碳酸盐岩储层具有埋藏深、地震反射信号弱和非均质性强的特点。针对这一特点

一是采用地震层拉平技术恢复古地貌

利用地震振幅属性参数恢复古水系

以此为基础

分析岩溶性储层发育的有利部位;二是利用相干体、振幅、波阻抗反演、约束测井反演等地震属性参数进行储层有效性分析;三是运用模式识别预测含油性。为避免单一参数的局限性

可采用直方图、二维交会图、三维交会图等方法综合运用多种参数进行储层和含油气性预测。实际应用证实效果良好

根据古地貌分析预测的碳酸盐岩储层有利分布区与实际相符;古水系的研究为地下河、溶洞的展布提供了可靠的地质依据;波阻抗反演、振幅、相干参数预测的储层吻合率达80%

模式识别预测含油气性经钻井证实是正确的;直方图预测区域钻井符合率达 70%以上

二维、三维交会图为分析有利储层的分布提供了可靠的技术手段。

Abstract

The Carbonate reservoirs of Tahe Oilfield in North Tarim are characterized by large buried depth

week seismic reflection signal and high heterogineity.Three methods could be used to predict this kind of reservoirs:1.use seismic horizon flattening technique to restore fossil landform;use seismic attribute parameters to restor fossil water system.Then predict the karst reservoir developed position;2.use the parameters of coherence

amplitude

wave impedance inversion and constrained logging to analyze the validity of the reservoir;3.use pattern recognition technique to predict reservoir's oil and gas potential

including hystogram

2-D cross plot and 3-D cross plot.The practice has proved that the predicted distribution areas of available carbonate reservoirs fit well with the actural ones

and the coincidence is 70%～80%.