碳酸盐岩储集层体积定量化估算技术

A method to quantitatively calculate the volume of carbonate reservoirs

在塔里木盆地非均质性极强的碳酸盐岩储集层中,大型溶洞与地震剖面上的强反射相对应。首先对提取的地震反射振幅数据体进行统计分析,通过井与地震标定找到储集层所对应的振幅值范围,再应用地震信息可视化技术,对地震数据体振幅进行特殊处理,使储集层在剖面上的位置被突显出来,最后根据已知数据体样点个数、所代表的体积和孔隙度,即可估算碳酸盐岩储集层体积。

In the extreme inhomogeneous carbonate reservoir in the Tarim Basin, large solution cavity corresponds to the strong reflect in the seismic profile. The extracted reflection amplitude is analyzed, and the amplitude range of the reservoir is required with the well and seismic calibration. With the seismic information visualization technique, the seismic data is specially disposed to obviously reveal the location of the reservoir in the profile. The volume of the carbonate reservoir could be calculated with the sample number, its volume and porosity.