Near-surface stratum Q value modeling method for loess plateau area micro-logging information

• Main Authors: LIU BIN, DI ZHIXIN, PAN SHULIN, PENG RENYAN, HAO XIAOMIN, XU LEILIANG, WU YINGHE, DONG XUGUANG, QIN BOCHENG, WEI BING
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention discloses a near-surface stratum Q value modeling method for loess plateau area micro-logging information. The near-surface stratum Q value modeling method comprises the steps that firstly, an improved micro-logging first arrival spectrum ratio method is used for obtaining a near-surface micro-logging Q value of a logging point; 2, performing spatial interpolation on the micro-logging Q value data by using a Kriging method to obtain a low-frequency near-surface Q value model; 3, predicting other spatial position Q values through known logging Q value data by utilizing machine learning to obtain a high-frequency near-surface Q value model; 4, performing scale fusion on the low-frequency and high-frequency near-surface Q-value models, and establishing a fine near-surface Q-value model; and 5, carrying out absorption attenuation compensation processing on the seismic data by using the fine near-surface Q value model. According to the method, the problem that the extracted logging Q value is not acc