摘要
为研究江苏油田G凹陷储层的岩石纵横波速度变化特性,采集了76块岩石样品,在实验室模拟地层温度、压力条件下干燥、饱水和饱油三种状态岩样的声波测量实验,分析了温度、压力、孔隙度和密度的变化对岩石纵横波速度的影响。结果表明,在干燥、饱水和饱油三种状态下,岩石纵横波速度呈现较好正线性相关性;压力对纵横波速度的影响大于温度的影响;岩石纵横波速度与孔隙度呈负线性相关性;岩石纵横波速度与密度呈较好幂指数关系。实验结果可以为该地区地震和测井资料反演和解释提供了重要的参考依据。
In order to research the variation property of S-wave and P-wave velocities in rocks in G sag,Jiangsu Oilfield,76 pieces of rock samples were collected.In the laboratory where it simulated the underground pressure and temperature,the sonic velocities of the rocks had been tested under the three conditions： dry,water saturated and oil saturated,and the influence of variations in temperature,pressure,porosity and density to the S-wave and P-wave velocities in rocks were analyzed.The results showed that under the above three conditions,the relationship between the S-wave and P-wave velocities in rocks was linear correlation;the pressure was more influential to the S-wave and P-wave velocities in rocks than the temperature was;the S-wave and P-wave velocities in rocks had a negative linear correlation with the porosity;the relationship between S-wave and P-wave velocities in rocks and the density showed power exponent relation.The results of the experiment provided an important basis for the inversion of the seismic and well log data in that region.
出处
《工程地球物理学报》
2010年第6期688-693,共6页
Chinese Journal of Engineering Geophysics
基金
教育部科学技术研究重点项目(编号:109035)资助
关键词
温度
压力
孔隙度
密度
纵横波速度
线性相关
temperature
pressure
porosity
density
S-wave and P-wave velocities
linear correlation
