The Seismic Inversion And Prospect Of Hight Resolution Seismic Reservoir With The Thin Interbeds Of Sandstone And Mudstone

Thesis takes the research completed by author using three-dimensional high resolution seismic data as foundation, studying the technology, theory and effect of high resolution seismic reservoir inversion and prospect. As the important aspect, the high resolution inversion technique and prospect technology are studying. The main objective is studying high resolution inversion technique and prospect technology integrating high resolution seismic data, geologic data logging, drilling, testing etc, aim at the special of the basin and the data condition limit. And that, finding an effective prospect method and technology that adapt to the thin interbcds of sandstone and mudstone, so that the precision of oil and gas prospect can be improved . The study work is based on the 3D high resolution seismic data of wen pu region, carrying on 3D high resolution seismic study of inversion and prospect and related contents: Analyzing the §eismic reflect characteristic of the different combination of sandstone and mudstone and it distinguishes ability to the reservoir, through the model experiment of the thin interbeds of sandstone and mudstone. Analyzing to think, the amplitude of the seismic mainly is decided by the thing difference, the frequency becomes the direct proportion to the sensitive degree and the geologic layer thicknesses of the thin layer thickness, reflecting wave has the tune domino effect of the amplitude and frequency. The forerunner's technique are adopted to carry on the three high resolution seismic acquisition processing and interpretation so that the seismic resolution and accuracy were improved, the "three high" "two low" "two small" "two new" technique are adopted in high resolution seismic acquisition and some methods are adopted to improve the sign-to-noise such as expending the width of sign etc .Make the resolution of seismic section had the significant exaltation, the frequency of the original data raise the 10-15 Hz equally, the main frequency attain the 80 Hz in 2500 meters, the bandwidth attain the 150 Hz, identifying for the thin interbcds of sandstone and mudstone and small faulted blocks hermeneutic to provide the dependable data. In the aspect of the high resolution interpretation, adopting to tread to interpretation method and high resolutions separately respectively real three interpretation method, and small range structure is fine the diagram technique, interpretation to interpretation with small geology body to combine together from the macroscopic geology body respectively, from order to face to combine three method that stereoscopic space of 3D combine together. In the high resolution seismic inversion aspect, carrying on the high resolution inversion method research, such as the various parameters of result towards affect inversion, the primal model establishment, the wavelet analysis, etc. putting forward the method and the technique way of multi-resolutions inversion to exaltatcd seismic inversion accuracy and resolution Integrating interpretation method is carryed on finally, put forward to include the dala to drive, the threshold is worth the method etc. several kinds keep the reservoir parameter to interpretation the method more and effectively, raising to keep hermeneutic accuracy of the reservoir parameter availably. 'The applied of the high resolution seismic inversion and prospect technique, the ability that predicts reservoir strengthens consumedly, the inversion data can interpretate the or so and thin bed of 10 meters basically.