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为了研究孔隙流体的声学性质 ,建立了 3种流体性质的数学模型 ,分析了流体声学性质 (速度、密度、体积模量 )与地下岩石孔隙温度和压力的关系 ,同时还给出了两种流体混合状态下声学性质数学模型。为了验证模型的可靠性 ,将天然气的实测数据与数学模型计算结果进行了对比。结果表明 ,模型计算结果与实测数据吻合较好 ,误差为 0 2 %～ 2 % ,能满足实际生产的需要。
In order to study the acoustic properties of pore fluids, three mathematical models of fluid properties were established. The relationship between fluid acoustic properties (velocity, density, bulk modulus) and pore temperature and pressure in underground rocks was analyzed. Two kinds of fluids Mathematical model of acoustic properties in mixed state. In order to verify the reliability of the model, the measured data of natural gas are compared with the mathematical model. The results show that the calculated results are in good agreement with the measured data, the error is 0.2% ~ 2%, which can meet the needs of actual production.