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Bedding surface model establishment method

A model building and modeling technology, which is applied in the field of geophysical exploration and seismic data processing, can solve the problems of low modeling efficiency, complex division of fault blocks, and long time-consuming layer model, and achieve the effect of improving building efficiency and improving adaptability

Active Publication Date: 2016-04-13
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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Embodiment Construction

[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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Abstract

An embodiment of the invention discloses a bedding surface model establishment method. The method comprises: according to seismic data, establishing a sectional model; performing grid division on a preset modeling region, using the divided grids as first grids; based on the sectional model, setting communication state of each first grid edge; based on the seismic data, and a preset piecewise function, establishing a poisson equation relative to an indicator function, wherein the piecewise function is used for representing variation trend of a bedding surface, and the indicator function is a scalar field and used for representing inner and outer regions of the bedding surface; and based on the poisson equation and the first grids whose grid communication states are set, establishing a bedding surface model. The method can be suitable to be used in conditions that normal faults and / or reverse faults exist, and the method can improve establishing efficiency of the bedding surface 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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Application Information

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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
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