AVO分析技术在塔中碳酸盐岩油气检测中的应用  

Application of AVO in hydrocarbon detection at Tazhong area

作　　者：鲜强 蔡志东 王祖君 王熊飞 梁国平 吕海清 张磊[1] 靳懿鑫 XIAN Qiang CAI Zhidong WANG Zujun WANG Xiongfei LIANG Guoping LV Haiqing ZHANG Lei JIN Yixing(Korla Branch of Bureau of Geophysical Prospecting CO. ,Ltd, CNPC, korla 841000 ,China Development and Production Seismic Division,BGP Inc. ,CNPC Zhuozhuo 072750 ,China)

机构地区：[1]中国石油东方地球物理公司研究院库尔勒分院,库尔勒841000 [2]中国石油东方地球物理公司新兴物探开发处,涿州072750

出　　处：《物探化探计算技术》2017年第2期260-265,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国石油集团重大专项(2014E-2109JT)

摘　　要：塔中西部奥陶系为不整合面相关的岩溶风化壳型油气藏,储层被不同的流体及泥质充填后,储层的地震响应都为"串珠状"反射,储层的AVO响应是不同的。在对地震、测井及地质资料分析的基础上,利用AVO分析技术对其流体属性进行预测。AVO分析技术主要包括正演及反演两个方面,通过正演可以认识到储层充填不同流体的AVO响应,从而确定AVO异常的类型,然后AVO属性反演(P,G等属性)预测不同的流体,最终达到降低勘探风险的目的。The Ordovician strata of west Tazhong area is the weathering karst reservoir connected with unconformi ty. When reservoirs are filled by brine, oil and shale, the seismic responses of the reservoirs are the ＂bead - like＂ reflections, but the AVO responses are different. We analyze seismic？ logging and geological data. AVO analysis technique is used to predict the fluids property in this paper. AVO analyzing technology mainly includes two aspects, the forward modeling and inversion modeling. The forward modeling can be used to recognize the AVO response of different fillings property and determine the type of AVO abnormal. Then we can predict different fillings by means of AVO attributes inversion （such as P, G attributes）. Ultimately, we can achieve the goal of lower the exploration risk.

关 键 词：AVO 碳酸盐岩 油气检测 AVO调谐效应 

分 类 号：P631.4[天文地球—地质矿产勘探]