The Application of Velocity Modeling Technology in Volcanic Rock Imaging

As a special lithologic reservoir, volcanic rocks have complex lithofacies changes and spatial superposition of rock masses, making it rather difficult to identify and predict them through seismic means. This paper focuses on the integrated processing and interpretation technology research for the complex structural imaging of volcanic rocks in the Jilin Oilfield. The core issue faced by accurate imaging of complex structures is the accuracy of the velocity model. Based on the practical experience in the imaging of volcanic rocks, this paper uses beam migration and grid tomography technology constrained by geological information to conduct velocity optimization iterations to improve the accuracy of the velocity model, so as to achieve the purpose of improving the accuracy of structural imaging. The processing results of actual data have verified the feasibility and effectiveness of the application of tomography velocity optimization technology and depth imaging technology for volcanic rocks in this paper.