Intelligent three-dimensional geological modeling method based on drilling data

Abstract

The invention discloses an intelligent three-dimensional geological modeling method based on drilling data. Firstly, drilling group data are integrated, an adjacency relation matrix of a drilling group is determined according to a Voronoi algorithm, drilling geological disclosure information is converted into character string data, and a character string similarity algorithm is applied to identifya common subsequence of adjacent drilling character strings. And determining the growth path of the plane domain of the borehole group according to the Voronoi diagram, and solving the distribution form of each geosome in the projection area of the geodetic plane; introducing a new control point to the non-continuous through body in the adjacent drilling interval, connecting the continuous through geologic body and the control point, creating geological sections of the adjacent drilling interval, converting all the geological sections into a three-dimensional space to generate a three-dimensional geological skeleton network, and finally assembling to form a three-dimensional geological model. According to the method, automatic three-dimensional geological modeling can be directly carriedout on the complex geologic body based on the drilling data, the three-dimensional topological relation of the drilling group is comprehensively considered, the data utilization rate and the model precision are improved, and the method can be applied to BIM development and smart city construction.

Description

technical field [0001] The invention relates to a three-dimensional geological modeling technology, in particular to an intelligent three-dimensional geological modeling method based on drilling data. Background technique [0002] 3D geological modeling plays an important role in the BIM collaborative design of construction projects and the construction of smart cities. Due to the limitation of measurement methods, in surveying and surveying, it is often only possible to manually analyze the geological distribution based on a small amount of borehole data, and use various interpolation methods such as Kriging interpolation and inverse distance weighted interpolation to calculate the adjacent boreholes. Geological interface profiles within the interval. Then import a large number of geological horizontal and vertical sections into various foreign commercial software such as Civil 3D to generate a 3D geological model. [0003] This traditional 3D geological modeling method h...

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Problems solved by technology

[0004] 1. It must be completed through a lot of manual intervention, the level of automation is low, the design modification is cumbersome, the production cycle is long, the efficiency is low, and it is easy to make mistakes;

[0005] 2. The two-dimensional interpolation method used to calculate the geological interface does not comprehensively consider the three-dimensional spatial information of the borehole group, and the three-dimensional spatial interpolation method is difficult to deal with common complex geological bodies such as stratum pinch-outs, intrusions, lenses, etc.;

[0006] 3. The functions provided by existing commercial software are quite basic and cannot meet the actual modeling requirements of complex geological bodies and special projects, and at the same time lack relevant independent intellectual property rights in practical applications

However, due to sparse sample data and complex geological structures, it is still difficult to conduct 3D geological modeling of complex geological structures without simplifying the sample drilling data, which not only relies heavily on manual intervention, but also Very poor operability

There are still great contradictions between the existing technical methods and the objective distribution of 3D geology, and many ideas are not practical and difficult to promote

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