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Experiment Research on Relation of Acoustic Velocity and Porosity in Compact Sandstone Reservoir, Sulige Gas Field
Author(s): 
Pages: 229-234
Year: Issue:  3
Journal: Well Logging Technology

Keyword:  rock geophysical experimentacoustic loggingcompact sandstoneacoustic velocityporositypressure affection factorSulige gas field;
Abstract: 利用苏里格气田1批岩心实验数据研究了常温常压和高温高压条件下岩样声波速度和孔隙度的变化及相互关系,岩石孔隙度随压力增大以对数形式减小,随温度升高略微减小;岩石声波速度随压力的增大以对数形式增大,随温度的升高线性减小;随埋深的增加,估算压力对声波速度的影响约是温度影响的10~30倍.对不同岩样孔隙度的压力影响系数随孔隙度的增大而减小;声波速度的压力影响系数随孔隙度的增大而增大,因此造成常温常压下孔隙度与声波速度的相关性在储层条件下变差.
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