Carbonate reservoir prediction technology and its application in Ka-1 3D acreage in Tazhong area,Tarim Basin

Yang Jiangfeng; Guan Da; Zhu Wenbin; Zhang xuedong; Xiang Xuemei; Wu Dali

doi:10.11743/ogg20120108

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Carbonate reservoir prediction technology and its application in Ka-1 3D acreage in Tazhong area,Tarim Basin
Vol. 33, Issue 1, Pages: 61-69(2012)
Online First：28 February 2012，

Published：2012
DOI： 10.11743/ogg20120108
稿件说明：

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DOI：

Yang Jiangfeng, Guan Da, Zhu Wenbin, et al. Carbonate reservoir prediction technology and its application in Ka-1 3D acreage in Tazhong area,Tarim Basin[J]. 2012, 33(1): 61-69. DOI： 10.11743/ogg20120108.

摘要

塔里木盆地塔中地区卡1三维工区前期勘探成果表明

奥陶系鹰山组碳酸盐岩储层以"裂缝、溶孔"型为主

但近期重新处理的地震数据中发现了一些"串珠、短轴状"强振幅地震反射异常体。针对这一现象

在新处理地震数据体的基础上

采用地震数字正演模拟、不连续性检测、古地貌恢复和地震多属性分析等技术

重新开展了卡1三维工区奥陶系鹰山组碳酸盐岩储层预测研究。结果表明

平面上呈"折线"状分布的强振幅异常体是火成岩的响应

而平面上呈散点状、剖面上呈"串珠"状的强振幅反射是较大尺度溶洞型碳酸盐岩储层的响应。这一成果已得到近期完钻井W20的证实

为本区下一步勘探部署开拓了新的方向。

Abstract

Previous exploration and research results show that the carbonate reservoir spaces of the Ordovician Yingshan Formation in Ka-1 3D acreage in Tazhong area are dominated by fractures and dissolution pores.However

recent reprocessed seismic data reveal some bead-shaped and short-axis-shaped high amplitude anomalies in Ka-1 3D seismic data.For this reason

many techniques

such as numeral seismic forward modeling

incoherence detection

palaeogeomorphology restoration and multiple seismic attribute extraction

are integrated to re-predict the Ordovician YingShan Formation carbonate reservoirs in Ka-1 3D acreage.The results show that the zig-shaped strong amplitude anomalies in plane view represent igneous rocks

while strong amplitude anomalies being scattered in plane view and beads-shaped on profile represent carbonate reservoirs with large cavities.These interpretations have been verified by well W20 completed recently.