川东石炭系岩石物性圈闭探索性研究  

Research on lithologic trap in Carboniferous system in east Sichuan basin.

作　　者：黄平[1] 涂涛[1] 刘兴刚[1] 

机构地区：[1]四川石油管理局研究院

出　　处：《石油地球物理勘探》2000年第3期326-332,共7页Oil Geophysical Prospecting

摘　　要：根据宽带约束反演及岩性约束反演得到地震资料约束反演 (DCI)剖面 ,由 DCI剖面求出岩石密度衰减系数及其与石炭系厚度的乘积 (储层 CDT值 )。储层 CDT值描述了储层的相对好坏。根据储层 CDT值的分布 ,结合地质情况 ,可以识别出岩石物性圈闭。将此技术用于明月峡构造带 ,把明月峡构造带石炭系储层分为三个区 ,并且识别出五个岩石物性圈闭 ,从区带划分上看 ,储层具有北好南差的特点。restrictive inversion and lithology restrictive inversion may be used to produce seismic data controlled inversion section, from which rock density attenuation coefficient and reservoir CDT( product of the coefficient and the thickness of Carboniferous system ) are derived easily. Reservoir CDT values reflect reservoir quality. Lithologic trap may be then discovered by analysing CDT distribution and geologic structure. This technique has been applied to Mingyuexia tectonic belt to map out three kinds of Carboniferous reservoir areas, in which five lithologic traps are delineated obviously. Analysis says that the reservoir is better in its north than in its south.

关 键 词：CDT值 岩石密度 圈闭 碳系 储集层 地震勘探 

分 类 号：P631.4[天文地球—地质矿产勘探] P618.130.2[天文地球—地质学]