Well-ground combined reservoir description method and device

Abstract

The embodiment of the invention provides a well-ground combined reservoir description method and device. The method comprises the steps: acquiring seismic data; performing data processing according tothe seismic data in a well to obtain a speed model and an anisotropy model; performing wave field separation according to the seismic data in the well to obtain downlink longitudinal waves; obtaininga spherical diffusion factor, an absorption attenuation factor and a deconvolution operator according to the downlink longitudinal wave; compensating ground seismic data according to the spherical diffusion factor, the absorption attenuation factor and the deconvolution operator to obtain compensated ground seismic data; updating the speed model and the anisotropy model according to the compensated ground seismic data; and performing anisotropic pre-stack depth migration processing on the compensated ground seismic data according to the updated speed model and the anisotropic model, and obtaining description information for describing a reservoir according to the re-processed ground seismic data, thereby realizing the fine description of the reservoir.

Description

technical field [0001] The invention relates to the field of seismic observation, in particular to a well-ground combined reservoir description method and device. Background technique [0002] Seismic exploration refers to a geophysical exploration method that artificially stimulates seismic waves, observes and analyzes the propagation laws of seismic waves generated by artificial earthquakes in the ground, and describes the nature and shape of underground reservoirs. [0003] In the prior art, surface seismic data are often used to describe underground reservoirs. However, due to near-surface fluctuations, absorption attenuation, and serious interference, surface seismic data are distorted by complex structures and igneous rock masses, and cannot be accurately obtained. The real information of the formation makes it impossible to achieve an accurate description of the reservoir. Contents of the invention [0004] The embodiment of the present invention provides a well-gr...

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Problems solved by technology

[0004] The embodiment of the present invention provides a well-ground combined reservoir description method to overcome the problem that the real information of the formation cannot be accurately obtained when the surface seismic data is used to describe the reservoir

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