Seismic prediction of fault damage zones in carbonates in Halahatang area,Tarim Basin

Wan Xiaoguo; Wu Guanghui; Xie En; Zhang Yintao; Gao Lianhua

doi:10.11743/ogg20160519

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Seismic prediction of fault damage zones in carbonates in Halahatang area,Tarim Basin
Vol. 37, Issue 5, Pages: 786-791(2016)
Online First：08 October 2016，

Published：2016
DOI： 10.11743/ogg20160519
稿件说明：

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DOI：

Wan Xiaoguo, Wu Guanghui, Xie En, et al. Seismic prediction of fault damage zones in carbonates in Halahatang area,Tarim Basin[J]. 2016, 37(5): 786-791. DOI： 10.11743/ogg20160519.

摘要

碳酸盐岩断裂带往往具有较宽阔的破碎带，是缝洞体储层发育的有利部位，断层破碎带的识别与预测对油气井位的优选具有重要意义。在塔里木盆地哈拉哈塘地区奥陶系碳酸盐岩井-震响应分析的基础上，通过地震方法与技术的对比分析，利用相干加强（AFE）与裂缝地震相分析技术，结合地震均方根振幅、地震曲率、缝洞体雕刻等多技术手段，可以进行碳酸盐岩断层破碎带的预测与刻画。结果表明，哈拉哈塘地区碳酸盐岩断层破碎带沿断裂带条带状、扇状展布，一般具有200~2 500 m的较宽范围，与钻探结果吻合程度高。哈拉哈塘地区奥陶系碳酸盐岩大型缝洞体储层的分布受控于断层破碎带，破碎带规模越大，缝洞体越发育。

Abstract

Carbonate fault zone often has relatively wide damage zone

which is favorable for the development of fracture-cave system

and its identification and prediction is of great significance for oil/gas target optimization.On the basis of well-seismic responses analysis of the Ordovician carbonates in Halahatang area of the Tarim basin

comparative analysis of various seismic techniques reveals that the carbonate fault fractured zone can be identified and described by using coherent enhancement technique(AFE) and fracture seismic facies analysis technique

combining with the seismic root-mean-square amplitude

seismic curvature and fracture-cave system description.The results show that the carbonate fault damage zones are in stripped

fan-shaped distribution along the fault zone

generally with a width of 200-2 500 m

which have good agreement with the well data.The fault fractured zone controlled the distribution of large scale fracture-cave system

and the wider the damage zone is

the larger the fracture-cave system is.