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Based on the set positioning in hierarchical tree (SPIHT) algorithm, fast seismic data compression based on the high-efficiency SPIHT (HESPIHT) algorithm is presented. To verify the validity of the algorithm, 10 seismic cross-sections are selected for the experiment. The result shows that the algorithm can reserve the quality of data better, meanwhile improving the efficiency of encoding and decoding.

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In order to obtain more reliable gas reservoir information and implement monitoring gas reservoir dynamically, a correction algorithm based on 4D seismic inversion is put forward in this paper. The algorithm uses visualization technology to observe difference between base horizon data and monitor horizon seismic data while using a normalized technology to calculate the correctors and analyze the seismic data. Through an experiment of the seismic data in a work area, the results show that our algorithm is an efficient way to eliminate volume changes made by the exploiting of oil and gas reservoir, and can clearly show the changes in oil reservoir area.