Focus System Software Development And Application Of Seismic Data Procession In Hydrate Exploration

Hydrate is a recently-discovered new energy. How to develop and make use of the energy remains an important task lying ahead of the explorers. Due to the special characteristics of the hydrate in its formation and storage, it is urgent to find out ways and techniques to explore and develop the hydrate properly and effectively.The article deals with the techniques and the flow chart processing hydrate seismic data, based on the study of the characteristics of hydrate and the well-developed existing software -- Focus system.First, on study of the characteristics of hydrate and the Focus system, software about seismic wavelet, fitting of a polynomial are developed and applied and the model suitable for processing hydrate data is successfully created. Modification has been made to the in-put and out-put of the Focus system, making it possible to process the hydrate data.Then, software about velocity analysis, stack and migration are studied and analyzed basing on the characteristics of the hydrate. According to the analysis, problems that should be paid attention to, models and parameters that should be selected and used are presented. Flow chart suitable for processing the hydrate data is therefore developed.Finally, on the basis of the flow chart, two high-resolution seismic lines from Xisha are processed and a satisfactory result has been reached -- BSR with the typical characteristics of hydrate was discovered.In summary, conclusions and suggestions on techniques of hydrate data processing, BSR analysis, parameter selection and analysis, flow chart designing and techniques in field work are drawn and presented.