莺—琼盆地岩石物理特性参数研究  

A STUDY ON PETROPHYSICAL PARAMETERS IN YING-QIONG BASIN

作　　者：朱水英 李维新 秦瑞宝 李艳萍 

机构地区：[1]中海石油研究中心勘探研究院,河北高碑店,074010

出　　处：《中国海上油气（地质）》2003年第2期140-144,共5页China Offshore Oil and Gas(Geology)

摘　　要：依据10口井的全波测井资料,对莺-琼盆地的泥岩、砂岩、灰岩及含气砂岩的纵横波速度比范围值进行了统计,并对其纵横波时差和纵横波速度比与密度、孔隙度、流体类型的关系进行了分析,在此基础上总结了这些岩类的纵横波速度关系式.莺-琼盆地泥岩的纵横波时差及速度比与其压实程度有关;砂岩的纵横波时差随孔隙度增大、密度减小而增大,气层的纵横波速度比随孔隙度增大、密度减小而降低,水层反之;地层含气后,纵波时差增大,横波时差基本不变,纵横波速度比降低.Based on the full_wave logging data from 10 wells, the ranges of compression_shear velocity ratios (V p/V s) for mudstone, sandstone, limestone and gas sandstone are calculated respectively in Ying_Qiong basin, and the dependency of P_wave slowness_time, S-_wave slowness_time and V p/V s on rock density, porosity and fluid types are analyzed, resulting in a summing of compression_shear velocity relationships for these rocks. For the mudstone, P_wave and S-_wave slowness_times and V p/V s are dependent on its compaction. For the sandstone, P_wave and S-_wave slowness_time will increase with decreased density or increased porosity. In the sandstone saturated with gas, V p/V s will decrease with increased porosity or decreased density, and vice versa in the water_saturated sandstone. After gas goes into a rock, its P_wave slowness_time will increase, S_wave slowness_time will remain unchanged, and V p/V s will decrease.

关 键 词：莺-琼盆地 岩石物理特性参数 研究 全波测井 纵波时差 横波时差 纵横波速度比 油气勘探 

分 类 号：P618.13[天文地球—矿床学] P631.819[天文地球—地质学]