地震属性参数在塔河油田储层含油气性预测中的应用

地震波穿过含油气储层时，会引起地震波波形、振幅、频率等参数以及速度、波阻抗等参数的变化。根据塔河油田三叠系碎屑岩和奥陶系碳酸盐岩储层的测井、钻井、测试资料及合成地震记录，建立了含油气储层的地震响应特征，确定了振幅、频率、波阻抗、振幅变化率等地震属性参数为储层含油气预测的敏感参数；将二维、三维参数交会分析技术应用到地震属性参数分析中，通过多种参数交会聚类分析，对储层的含油气性进行了预测。该方法应用于三叠系碎屑岩储层含油气性预测，取得了良好的效果；由于奥陶系储层的纵横向非均质性强，对储层的含油气性进行了尝试性预测，取得了一定效果。

Application of seismic attributes in the prediction of oil & gas potential in Tahe oilfield

Waveform, amplitude, and frequency of seismic waves change when seismic waves travel across a hydrocarbon-bearing reservoir. Hydrocarbon-bearing reservoirs also lead to variations of attributes such as velocity and impedance. On the basis of logging, drilling, test data of the Triassic clastic rock and Ordovician carbonate reservoir, as well as synthetic seismograms, this paper established the patterns of seismic responses for hydrocarbon-bearing reservoir, and confirmed that seismic attributes such as amplitude, frequency, impedance, rate of amplitude change were sensitive to oil and gas. By adoption of 2-D and 3-D crossplotting technique in seismic attribute analysis, we predicted the oil & gas potential for the reservoir. Satisfactory results have been achieved by the application of the method in the Triassic clastic reservoirs, whereas the results yet need to be further improved in the Ordovician carbonate reservoirs.