Application of AVO techniques to reservoirs prediction of oolitic beach facies in Puguang gas field

Guo Xusheng; Fan Rui

doi:10.11743/ogg20070210

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Application of AVO techniques to reservoirs prediction of oolitic beach facies in Puguang gas field
Vol. 28, Issue 2, Pages: 198-202(2007)
Online First：25 April 2007，

Published：2007
DOI： 10.11743/ogg20070210
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DOI：

Guo Xusheng, Fan Rui. Application of AVO techniques to reservoirs prediction of oolitic beach facies in Puguang gas field[J]. 2007, 28(2): 198-202. DOI： 10.11743/ogg20070210.

摘要

普光气田为长兴组一飞仙关组礁滩相白云岩储层为主的构造-岩性复合圈闭特大型气田

储层综合预测技术为气田勘探关键之一.基于叠前时间偏移资料进行AVO属性处理

较好地解决了AVO异常的归位问题

使AVO响应更清晰

提高了AVO资料的分析质量.在测井和地质资料综合分析的基础上

通过正演模拟

建立普光气田飞仙关组鲕滩储气层AVO异常的识别模式

开展AVO属性分析

取得了较好的应用效果

为在四川盆地川东北区油气勘探寻找到一条有效途径.

Abstract

For Puguang gas field

a giant structural-lithologic gas field with dolomite reservoirs of reef flat facies in Changxing-Feixianguan formations as the main zones of interest

the comprehensive reservoir prediction technology is considered one of the key solutions for gas exploration.Through AVO attribute processing of pre-stack time migration data

the problem of migration of AVO abnormality is well solved

the AVO responses are enhanced

and the quality of AVO data analysis is improved.Based on an integrated analysis of logging and geologic data

recognition patterns are established for the AVO abnormality of the Feixianguan Formation gas reservoirs of oolitic beach facies in Puguang gas field through forward modeling

and AVO attribute analysis is also performed.AVO techniques can be effectively applied to oil & gas exploration in northeastern Sichuan.