论文部分内容阅读
我们在“四川盆地DJB地区表层干扰波的调查和多次覆盖试验的初步成果”一文中(见“石油物探”76年第二期),提出了在模拟回放处理中,为了较好地解决山区的静校问题,可采用填充法。在山区一条剖面地形高差往往很大,我队所在的工区有的竟达700余米,而且切割得非常厉害,有的沟深达四百米左右。在这种情况下,静校基准面选在所有炮点和检波点之下,就会使一些炮点和检波点至基准面的高差非常之大,对这些点进行静校正就要产生较大的理论误差,浅层尤为明显。同时由于高差大,没有测井资料控制,用恒速向下延伸,也会引起误差。将基准面选在一个比较适中的位置,使该面距上下各点的高差相差不多,就可以减小这些误差,部分地解决“静校不静”的问
In a paper entitled “Investigation of Surface Interference Waves in DJB Area in Sichuan Basin and Preliminary Results of Multiple Coverage Experiments” (see “Petroleum Geophysical Prospecting”, Issue 76, Issue 2), in order to better solve the problem of mountainous areas The static problem, can be filled method. In the mountainous area, the elevation difference of a profile is often very large. The number of the work area where our team is located is as high as 700m. The cutting is very powerful and some ditches are about 400m deep. In this case, the static datum is selected under all shots and seismograms, which will make some of the shots and seismograms very large to the datum, and statically correcting them Large theoretical error, especially shallow. At the same time due to the large height, no logging data control, with a constant speed down, can also cause errors. Select the datum in a more moderate position, so that the surface height difference between the upper and lower points about the same, you can reduce these errors, and partially solve the “static static” question