用于油气检测的地震属性差异分析方法——在塔中地区的应用

摘要

反射地震资料的属性与油气勘探的最终目标——油、气有密切联系.利用地震波场的属性中隐藏着识别油气藏的密码进行油气检测,是一项新的油气检测技术.有油气存在时其地震属性会在局部产生非常规变异,寻找这种变异的差异,就可以进行油气检测,这也就为油气圈闭的地球物理评价提供了基础.通过在塔里木油田的试验表明,上述检测油气的属性差异分析方法技术是有效的.建议在油气钻探之前,首先进行油气检测和圈闭评价,以减少风险,提高油气勘探的成功率.%The attributes of reflection seismic data are closely related to the ultimate goal of oil and gas exploration. The utilization of the oil and gas accumulation-related code concealed in the attributes of reflection seismic data to detect oil and gas is a new technology for oil and gas detection. Where oil and gas occur, there exist local unconventional variations in seismic attributes, and the prospecting for the differences in such variations is a means for oil and gas detection. This means provides the basis for geophysical evaluation of oil and gas traps. The test in the Tarim oilfield shows that the analytical technology for detecting the variations in oil and gas attributes is effective. It is suggested that oil and gas detection and trap evaluation be conducted prior to oil and gas drilling so as to reduce risks and raise the success rate of oil and gas exploration.