三维可视化技术在塔河油田的应用

Application of 3D Visualization Technique in Tahe Oilfield

三维地震数据体可视化是一种全三维地震资料解释方法。采用这种方法,可以在三维数据体内部直接工作,通过调整地震数据体的透明度来直接评价三维空间中地下界面的地震反射。具体作法是:首先将三维地震保幅数据体、相干数据体、波阻抗数据体等输入三维可视化软件中,再通过砂体的目标层标定,沿目标层设定种子点并自动横向追踪,刻画出砂体的分布形态。在此基础上,进行砂体顶面、底面雕刻,获得砂体的厚度变化,从而揭示碎屑岩河流相砂体以及碳酸盐岩溶洞储集体的空间展布规律。

The visualization of 3D seismic data is a technique of full 3D seismic data interpretation. The 3D data can be analyzed directly by using this technique. What's more, direct evaluation on the seismic reflection of underground interface in 3D space can be achievedbased on the adjustment of the transparency of seismic data volume. The practical procedure is presented as follows: firstly, inputting 3Dseismic data with certain amplitude, coherent data, wave impedance data, and then calibrating the objective layers of sandbodies,determining the seed point along the objective layers and tracing automatically, describing the distribution shape of sandbodies. On thebasis of the above structural interpretation, the depth variation of sanbodies has been obtained through the top and the bottom describing,and it can be revealed the space distribution law of clastic-fluvial sandbodies and dissolve hole reservoirs of carbonates.