Title

Seismic prediction method for deep glutinite bodies in the northern zone of Dongying Depression

单位

1中国石油化工股份有限公司胜利油田分公司物探研究院，山东东营257100；2中国石油大学（北京），北京102249

Organization

Geophysical Prospecting Institute,Shengli Oilfield Branch Company,SINOPEC,Dongying 257100,China

摘要

东营凹陷北带盐下砂砾岩体具有良好的成藏条件，但由于深层地震资料的分辨率低，盐下砂砾岩体勘探具有较大的风险。因此，基于现有资料，对盐下砂砾岩体的地震预测技术进行了探索。首先进行了成藏控制因素和成藏模式分析，将扇体分为近岸水下扇和深水浊积扇两大类；〖JP+1〗然后针对不同类型的扇体，分别讨论了相应的地震预测方法。对于近岸水下扇，采用岩石物理分析、正演模拟、地层切片和叠前弹性阻抗反演等方法进行储层预测和流体识别；对于深水浊积扇，利用地震属性分析、测井约束反演和吸收特征分析等方法，进行储层预测和含气性分析。预测结果与钻井结果的对比表明，上述地震预测方法可以有效识别储层的含气性，划分有利勘探区。

Abstract

Seismic prediction method for deep glutinite bodies in the northern zone of Dongying Depression.. Wang Shugang,Li Hongmei,Wei Wen,Wang Fanjian,Wang Hong.GPP,2009,48(6):584~590
The subsalt glutinite bodies in the northern zone of Dongying Depression provide favorable pooling potential.However,because of the low resolution of seismic data from deep layers,the exploration of subsalt glutinite bodies still has risky.Therefore,based on the existing data,we probed seismic prediction technique of subsalt glutinite bodies.Firstly,the pooling controlling factors and pooling patterns were analyzed,and the fans were classified into nearshore subaqueous fan and deepwater turbidite fan.Then,seismic prediction methods discussed for different types of fans.For nearshore subaqueous fan,petrophysical analysis,forward modeling,strata slice and prestack elastic impedance inversion can be used for reservoir prediction and fluid identification;for deepwater turbidite fan,seismic attributes analysis,logging constraint inversion and absorption characteristics analysis can be adopted for reservoir prediction and gasbearing analysis.The comparison between prediction results and drilling results show that the above seismic prediction method can effectively recognize the gasbearing of reservoirs and identify favorable exploration area.

关键词：

砂砾岩体; 成藏控制因素; 成藏模式; 弹性阻抗反演; 地震属性; 吸收特征分析;

Keywords:

glutinite body; pooling controlling factor; pooling pattern; elastic impedance inversion; seismic attribute; absorption characteristics analysis;

基金项目

DOI

东营凹陷北带深层砂砾岩体的地震预测方法