Layer Modeling Method
A model building and model technology, applied in the field of geophysical exploration seismic data processing, can solve the problems of low modeling efficiency, complex fault block division, and long time for layer model, so as to improve the establishment efficiency and improve the adaptability.
Active Publication Date: 2018-02-02
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
The division of fault blocks is relatively complicated in the above-mentioned layer model building method, especially when there are a large number of impermeable sections in the horizontal or vertical direction of the modeling area, it is often necessary to repeatedly control the extension trend of the cross-sections in order to obtain a reasonable fault block Divide the results, so that the establishment of the level model takes a long time, and the modeling efficiency is low
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[0035] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0036] In the process of petroleum exploration and development, it is often necessary to establish a subsurface geological model based on seismic data or well logging data to simulate and analyze oil and gas distribution, calculate remaining production reserves, and carry out numerical simulation calculation and analysis on production desi...
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The embodiment of the present application discloses a method for establishing a level model. The method includes: establishing a section model according to the seismic data; performing grid division on the preset modeling area, and using the divided grid as the first grid; based on the section model, setting the connectivity of each first grid edge State; based on the seismic data and a preset piecewise function, a Poisson equation about an indicator function is established, wherein the piecewise function is used to represent the change trend of the layer, and the indicator function is a scalar field for Indicates the inner and outer areas of the layer; based on the Poisson equation and the first grid after setting the connectivity state of the grid edges, a layer model is established. The method of the embodiment of the present application can be applied to the situation where there are normal faults and / or reverse faults, and can improve the efficiency of building a slice model.
Description
technical field [0001] The present application relates to the technical field of geophysical prospecting seismic data processing, in particular to a method for establishing a slice model. Background technique [0002] Layer, also known as stratum layer, is generally the boundary between strata and strata. The layer model is generally a mathematical description of the stratum layer, which is an important basis for studying the spatial distribution of geological parameters and an important method for studying 3D stratigraphic models. The establishment of the layer model provides a method basis for the drawing and display of the geological structure map and the distribution of reservoir parameters. [0003] In the prior art, methods for building layer models mainly include methods based on section blocks and methods based on continuous surfaces. [0004] The US patent technology publication number US2006014343A provides a method for establishing a layer model based on a conti...
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IPC IPC(8): G01V1/30
Inventor 于海生白雪莲钱宇明赵亮楚万长陈海云滕振宇李咏梅王立松鱼福灵
Owner BC P INC CHINA NAT PETROLEUM CORP