拟合 Q 体建模技术及应用
网络出版日期: 2015-05-26
基金资助
中国石油华北油田分公司科研项目“华北油田上产稳产 800 万吨”(编号: 41475329 )资助
Application of fitting stereoscopic Q modeling technology
Online published: 2015-05-26
司马立强 , 李 清 , 杨 毅 , 陈 强 . 拟合 Q 体建模技术及应用[J]. 岩性油气藏, 2015 , 27(3) : 94 -97 . DOI: 10.3969/j.issn.1673-8926.2015.03.014
Due to the absorption and attenuation in seismic exploration, the received frequency is reduced, which seriously affects the quality of the seismic data. Therefore, the data must be compensated for its decay. VSP data receives the direct wave, and the traveling time is short, so it has high S/N, and Q value calculated by spectral ratio method is more reliable. However, the number of VSP wells within the region is limited, so the calculated Q value can not represent the entire region. This paper presented a combined method to calculate the fitting Q value, which is based on the Li Qingzhong formula. It relies on the exact velocity spectrum picked. This Q value is calculated after VSP calibration data, and creates a variable stereoscopic Q model. By comparing the application of actual data, this fitting Q modeling technology can improve the overall energy and frequency. This calculated Q value is reliable, and this new method is worth of learning.
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