Quantitative forward m odelling of cavity volume in carbonate reservoirs in Tazhong area

doi:10.11743/ogg20100621

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Quantitative forward m odelling of cavity volume in carbonate reservoirs in Tazhong area
Vol. 31, Issue 6, Pages: 871-878(2010)
Online First：28 December 2010，

Published：2010
DOI： 10.11743/ogg20100621
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DOI：

Quantitative forward m odelling of cavity volume in carbonate reservoirs in Tazhong area[J]. 2010, 31(6): 871-878. DOI： 10.11743/ogg20100621.

摘要

采用波动方程正演模拟方法，针对储层地震响应特征分析和缝洞体体积计算等制约塔中地区碳酸盐岩勘探开发的关键问题进行了探讨。通过大量正演模拟，明确了碳酸盐岩串珠状强振幅、羊排状强振幅、杂乱反射和弱振幅等各类复杂地震响应特征的地质意义，同时开展了正演校正下溶洞体体积计算新方法的探索。研究表明这是一套行之有效的碳酸盐岩溶洞体积计算方法，可以为高效开发和储量计算提供参考依据。

Abstract

In this paper，we discuss key issues constraining exploration and development of carbonate reservoirs in the Tazong area such as analysis of seism ic response characteristics and calculation of cavity volume by using wave equation forward modelling.Through many forward modellings，we figure out the geological implication of various complex seism ic responses such asmoniliform high amplitude，mutton chop-shaped high amplitude，chaotic reflection and low amplitude.We also bring forward a new method for calculating cavity volume with forward modelling correction.The study shows that this method is an effective way to calculate cavity volume of carboˉnates and can provide help for efficient development and reserve estimation.