| The reservoir description in exploration stage is an integrated technique to characterize the reservoir, and the main tasks of reservoir description in this stage are to describe the conformation of reservoir, to characterize reservoir internal structure and the distribution of oil and water, to identify the concept model of reservoir, to enhance the precision of exploration, to use the fewest wells to control the proved reserves. As a result, in order to characterize the reservoir property more precisely, the reservoir evaluation in exploration stage is very significant.Aiming at the present problems in exploration of Qianmiqiao carbonate buried hill, on the basis of serious research on basic geological properties, with special study on seismic data procession and well logging fine interpretation in carbonate reservoir, focusing on enhancing the precision of exploration, regarding quantitative reservoir evaluation as object of study, applying multi-discipline method, a set of systematic seismic data procession methods and well logging fine interpretation approaches which applied in Qianmiqiao carbonate buried hill are proposed, which open a new way for studying on reservoir evaluation in exploration stage for similar oilfields. The main results of the dissertation are as follows:(1) Basic geological properties of Qianmiqiao and genetic conditions of buried hills in Huanghua depression have been summed up. Meanwhile, the farther cognition to Qianmiqiao buried hill structural evolution and palaeogeographic environment have been acquired.(2 ) New techniques on seismic data procession are studied and applied(1)Methods of enhancing seismic signal in deep layers: In order to solve the problems such as reconstruction of seismic wave amplitude, high frequency signal recovery and compression of noises which existed in procession of seismic signal in deep layers, a series of corresponding techniques which include prestack frequency wave number domain ascending power method, spectral-broaden method,optimal spectral modulation and signal enhancement method are developed. As a result. the signal-to-noise has been enhanced.(2)Study on elimination of multiple: In view of the difficulty of eliminating multiple in seismic data of land, a prestack beaming filter software fit to elinmination of multiple is developed. The application result in eliminating multiple of Qianmiqiao carbonate reservoir is very good.(3) Technique of target imaging in deep layers : Based on the theory of tomographic, a new velocity modeling using Radon projection analytic technique is proposed, which is the precondition for extending depth migration method and serving the imaging of deep compiex structure.(4)Study of modeling restrained procession technology: Restrained by real geologic model, considering feature of the non-hyperbola of data, a set of model restrained procession technique and corresponding mutual procession software Mdrspro is developed.(3) Study on well logging interpretation in carbonate reservoir(1)Interpolation method study on core data: With the idea that krigging method can be applied to interpolate the core data , a interpolation method based on fractal theory is established, which make use of the fractal characterization generated by the heterogeneity of reservoir .(2)Recognition to pore types of carbonate formation : Regarding the complex geologic condition, various pore types in Qianmiqiao carbonate reservoir, a method using NMR logging combined with FMI and conventional logging to classify the reservoir is proposed, and the corresponding classification indexes are provided.(3)A new way to calculate reservoir permeability :Based on the recognition to the pore types of carbonate formation, in view of pore and fracture abundance along with their functions on reservoir and percolation, math model of permeability is set up by non-parameter regression in accordance with the reservoir types.(4)Recognition to fluid types in carbonate reservoir : Due to complex lithology,various pore types and...
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