多波多分量技术在广安构造中的初步应用  

PRELIMINARY APPLICATION OF MULTIWAVE MULTICOMPONENT SEISMIC TECHNOLOGY IN GUANG'AN STRUCTURE

作　　者：黄东山[1] 谢芳[1] 李忠[1] 王鸿燕[1] 李登亮[1] 

机构地区：[1]四川石油管理局石油地球物理勘探公司物探研究中心

出　　处：《天然气工业》2006年第8期44-46,共3页Natural Gas Industry

摘　　要：现最常用的多波地震是利用纵波震源激发、三分量检波器接收,其接收到的不仅有纵波信息,还有转换横波信息,多波多分量地震勘探就是综合利用纵波、横波信息。相对于常规的纵波勘探而言,多波地震勘探可以提供的地下信息更为丰富,联合纵波和横波特性有助于更准确地确定地下储层和流体特性,减小多解性。文章介绍了多波多分量技术在四川盆地川地区广构造上的初步应用情况,该区块在多波多分量采集处理获得较好资料的基础上,进行了纵波、转换波(P-SV波)的层位匹配、转换波层位标定、制作了压缩剖面,通过对纵波转换波剖面的对比分析,纵波、转换波(P-SV波)的联合反演,提取了纵横波速度比、λρ、μρ等属性参数,对须六段进行了储层预测并取得了初步成效。The most common multiwave exploration at present uses P-wave source shooting technique and three-component geophones, which receive not only P-wave signals but also converted shear wave signals. Mutiwave multicomponent seismic exploration is to comprehensively utilize the P-wave and shear wave signals. In comparison with the conventional P-wave exploration, multiwave seismic exploration can obtain more subsurface information, and the combination of P-wave and shear wave helps to more accurately determine the properties of reservoir and fluids and reduce ambiguity of interpretation. This paper introduces the preliminary application of the mutiwave multicomponent seismic technology in Guang'an structure in the Sichuan Basin. Based on the results of multiwave multicomponent seismic acquisition and processing in this block, horizon correlation of P-wave and converted wave, i.e. P-SV wave, and horizon calibration of converted wave are carried out and compressed section is generated. Attribute parameters, such as compressional to shear velocity ratio, λ_ρ and μ_ρ are extracted through comparative analysis of P-wave converted section and combined inversion of P-wave and converted wave, i.e. P-SV wave. The reservoirs in the 6th member of Xujiahe Fm are predicted and preliminary results have been obtained.

关 键 词：转换波 速度比 储集层 预测 四川盆地广安 

分 类 号：P631.4[天文地球—地质矿产勘探]