Three-dimensional geological block construction method and device

Abstract

The invention discloses a three-dimensional geological block construction method and device. The method comprises the steps: obtaining a three-dimensional geological model which comprises an earth surface triangulation network, a model boundary triangulation network, and at least one of the following types of triangulation networks: a stratum triangulation network and a fault triangulation network; carrying out intersection on each triangulation network in the three-dimensional geological model to obtain a plurality of subdivided triangulation networks and a group of intersection lines corresponding to each triangulation network; and traversing the triangulation network connected with each intersection line, and sequentially adding each triangulation network in the three-dimensional geological model into a preset geological block body to obtain a closed geological block corresponding to the three-dimensional geological model. According to the method, the closed geological block is constructed based on the triangulation network and the intersection lines, triangles at the intersection lines do not need to be strictly edged, and the construction difficulty of the triangulation network is reduced, so that the technical effects of improving the construction efficiency of the geological block and shortening the construction period of a complex model can be achieved.

Description

technical field [0001] The invention relates to the field of geophysical exploration and development, in particular to a three-dimensional geological block construction method and device. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] In this field, the establishment of a 3D geological model is a prerequisite for model forward modeling and lighting. At present, the existing technologies for establishing three-dimensional geological blocks are all based on the adjacent relationship of triangle sides to construct closed geological blocks. This three-dimensional geological block construction method requires that the triangles at the intersection line must be strictly co-edge when the triangulation is calculated and reconstructed, and there are two problems as follows: first, i...

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Problems solved by technology

[0005] An embodiment of the present invention provides a method for constructing a three-dimensional geological block, which is used to solve the technical problem that in the prior art, a closed geological block is constructed based on the adjacent relationship of triangle sides in a three-dimensional geological model, resulting in low construction efficiency of a three-dimensional geological block. Including: obtaining a three-dimensional geological model, wherein the three-dimensional geological model includes surface triangulation, model boundary triangulation, and at least one type of triangulation as follows: stratum triangulation, fault triangulation; intersecting each triangulation in the three-dimensional geological model , to obtain multiple subdivided triangulations and a set of intersection lines corresponding to each triangulation; traverse the triangulations connected by each intersection line, add each triangulation in the 3D geological model to the preset geological block in turn, and obtain Closed geological blocks corresponding to the 3D geological model

[0006] The embodiment of the present invention also provides a three-dimensional geological block construction device, which is used to solve the technical problem in the prior art that a closed geological block is constructed based on the adjacent relationship of triangle sides in a three-dimensional geological model, resulting in low construction efficiency of a three-dimen...

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