地震相干分析技术及其在断层解释中应用-地球探测与信息技术专业论文.docxVIP

成都理工大学硕士学位论文 成都理工大学硕士学位论文 II II Technology of Coherent Analysis and Its Application in the Fault Interpretation Introduction of the author: Jinzheng Yang, male, was born in November, 1982, whose tutor was Professor Junxing Cao. I graduated from Chengdu University of Technology in Geophysical Prospecting and Information Technology major and was granted the Master Degree in June, 2010. Abstract The paper introduced seismic coherent analysis technology and its application in the fault interpretation of target area. In this paper, the target area is located in Sichuan Longgang district of oil and gas exploration. The main contents and results of this paper are listed as follows: The paper reviewed in detail the principle of seismic coherence cube and the coherence algorithms of three generations. With comparing the results of C2, C3 coherent algorithm in practical applications, the paper employed C3 coherent algorithm to calculate the 3D target data at last. In order to achieve better effect, this thesis compared the different effect when using different parameters and picked up those optimal ones such as matrix type space combination and 11 ms window. Based on the data of logging, drilling and seismic etc, synthetic seismograms of 6 wells were made to demarcate the target layer of Shaximiao. And then, the paper applied the technology of the three-dimensional seismic interpretation, seismic images analysis and coherent analysis, and explained 185 profiles along the survey line (inline3275-inline4200) and 500 horizontal slices of the study area. Finally, 143 faults of the target area were explained. The paper not only used three-dimensional software to display the fault in the place, but also described the fault’s element of this region such as trend and tendency. Some typical structural modes, such as imbricate structure, fault-propagation folds, pop up, arrested anticline, were analysis. According to the interpretation and analysis of the fault and fracture zones, the