CN111192359B - Method for extracting borehole lithology data by using geological section borehole space track morphology - Google Patents

Abstract

The invention belongs to the technical field of three-dimensional geological modeling, and particularly discloses a method for extracting borehole lithology data by using a geological section borehole space track form, which comprises the following steps: s1, collecting and vectorizing a geological profile, converting coordinates of the geological profile to enable the geological profile to be rotationally erected in a three-dimensional space, extracting drilling positioning and inclinometry information, and establishing a positioning table and an inclinometry table; s2, establishing lithology boundary lines of different sections of the ore deposit into lithology interfaces, wherein the lithology interfaces adjacent to each other up and down are the same rock stratum; establishing a lithology table, and establishing a rock stratum DTM (data transfer model) by utilizing the geological profile erected in the step S1 to establish the same lithology boundary in the ore deposit; and S3, carrying out spatial analysis on the drilling holes and the rock stratum DTM, setting spatial relation expression and lithology values, and endowing lithology values to drilling sections among the rock stratum DTM to generate a drilling lithology table. The method provides technical support for the preparation of the lithology data of the three-dimensional modeling, and solves the technical problem of three-dimensional geological modeling based on the sectional view.

Description

Method for extracting borehole lithology data using geological profile borehole spatial trajectory morphology

Technical field

The invention belongs to the technical field of three-dimensional geological modeling, and specifically discloses a method for extracting borehole lithology data using the geological section borehole spatial trajectory shape.

Background technique

Three-dimensional geological modeling mainly relies on data. With data support, modeling methods mainly include three-dimensional modeling based on drilling data, three-dimensional modeling based on geological profile data, and, when there is less data, based on map-cut profile data. 3D modeling. In the modeling method based on geological profile data (the original drilling geological catalog data is missing), the borehole inclination, positioning, lithology and other data required for modeling need to be extracted based on the geological profile, and the geological profile borehole spatial trajectory shape is used. Extracting borehole lithology data is crucial. Extracting lithology data based on stratigraphic boundaries and borehole trajectory morphology requires manual data input, and continuous trying of different data until the lithology completely matches the stratigraphic interface.

Contents of the invention

The purpose of the present invention is to provide a method for extracting borehole lithology data using the geological section borehole spatial trajectory morphology. This method provides technical support for the preparation of three-dimensional modeling lithology data and solves the problem of three-dimensional geological construction based on profile diagrams. Technical difficulties with the mold.

The technical solution to achieve the object of the present invention: a method for extracting borehole lithology data using the geological section borehole spatial trajectory morphology. The method includes the following steps:

Step S1: Data preparation and processing: collect geological profiles and vectorize them, perform coordinate conversion on the geological profiles so that they can be rotated and erected in three-dimensional space, extract borehole positioning and inclinometer information, and establish positioning tables and inclinometer tables;

Step S2: Demarcation of lithological boundaries

Establish a lithological interface with the same lithological boundary line in different sections of the deposit. The adjacent lithological interfaces above and below are the same rock layer. Establish a lithology table and use the geological section erected in step S1 to establish a lithological interface with the same lithological boundary line in the deposit. DTM;

Step S3: Extract borehole lithology data

Perform spatial analysis on boreholes and rock formation DTMs, set spatial relationship expressions and lithology values, and assign lithology values to borehole sections between rock formation DTMs to generate a borehole lithology table.

In step S1, 3Dmine three-dimensional software is used to perform coordinate conversion on the geological profile, and in step S3, 3DMine software is used to perform spatial analysis on boreholes and rock formation DTM.

The step S2 includes the following steps:

Step S21: Create a lithology table and set the contents of the lithology table;

Step S22: Extract the lithological boundary line of the geological profile, establish the rock layer DTM, perform coordinate conversion on the geological profile so that it stands at the actual position in the three-dimensional space, and drill the borehole according to the positioning table and inclinometer built in step S1. The trajectories are projected onto the converted three-dimensional spatial geological profile.

The contents of the lithology table set in step S21 include borehole name, from, to, lithology, and formation code.

The step S3 includes the following steps:

Step S31: Add all stratigraphic codes to the lithology table obtained in step S21 under the borehole display style directory, set them to different colors to facilitate the differentiation of lithology sections, and set borehole constraints to select the section for extracting lithology data. ; Step S32: Open the three-dimensional converted geological profile where the borehole is located in step S22, cut the profile, and project the selected borehole trajectory onto the corresponding position of the geological profile for display;

Step S33: Use the ruler to query the distance between different lithology boundaries on the borehole trajectory, that is, the DTM thickness of different rock layers, and obtain the lithology data of a single borehole;

Step S34: If the assigned lithology value and the lithology boundary in step S33 are not completely consistent, you need to try to increase or decrease the value of the lithology segment step by step on the borehole spatial trajectory until they are completely consistent; Step S35: Enter the borehole lithology records on all the geological profiles described in the above steps S31 to S34 into the lithology table, which is the borehole lithology data of the deposit.

The patterns and text in the borehole display in step S31 are all set to lithology display, so that the lithology segments are displayed in the borehole space trajectory, and all boreholes in a single section can be displayed independently.

The specific steps for using the ruler to query the DTM thickness of different rock strata on the borehole trajectory in step S33 are as follows: Select the borehole to be edited, fill in 0 to the first lithology interface, and the first to the second lithology interface. distance, lithology description and stratigraphic code, and so on until the hole depth, to obtain the lithology data of a single borehole.

In step S34, a ruler is used to measure the DTM thickness of each rock layer based on the borehole trajectory. The lithology value assigned based on the thickness is consistent with the boundary line.

The beneficial technical effects of the present invention are:

(1) The present invention proposes a method for extracting borehole lithology data using geological profile borehole spatial trajectory morphology. This method solves the problem of lithology data processing when the original drilling geological catalog data is lacking in three-dimensional geological modeling based on profile diagrams. technical challenge.

(2) The present invention proposes a method for extracting borehole lithology data using the spatial trajectory shape of geological profile boreholes. This method breaks through the shortcomings of previous lithology data extraction and can extract profile lithology information more quickly and accurately. Three-dimensional geological modeling provides favorable data support and optimizes the accuracy of the three-dimensional model.

Description of the drawings

Figure 1 is a flow chart of a method provided by the present invention for extracting borehole lithology data using the geological section borehole spatial trajectory shape;

Figure 2 is a schematic diagram of lithological data information extraction provided by the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

A method for extracting borehole lithology data using the geological section borehole spatial trajectory morphology. The method includes the following steps:

Step S1: Data preparation and processing;

Collect geological profiles and vectorize them, use 3Dmine three-dimensional software to perform coordinate conversion on the geological profiles so that they can be rotated and erected in three-dimensional space, extract borehole positioning and inclinometer information, and establish positioning tables and inclinometer tables.

Step S2: Delineation of lithological boundaries;

The same lithological boundary line in different sections of the mineral deposit is established as a lithological interface, and the adjacent lithological interfaces above and below are the same rock layer. Establish a lithology table, and use the geological profile erected in step S1 to establish a rock layer DTM for the same lithology boundary within the deposit. Step S2 specifically includes the following steps:

Step S21: Establish a lithology table and set the contents of the lithology table, including borehole name, from, to, lithology, and stratum code;

Step S22: Extract the lithological boundary line of the geological profile erected in step S1 and establish the rock layer DTM. The geological profile is coordinate transformed using 3Dmine three-dimensional software to make it stand at the actual position in the three-dimensional space. According to the established positioning table and survey data, Inclination table, which projects the borehole trajectory onto the converted three-dimensional spatial geological profile.

Step S3: Extract borehole lithology data;

Use 3DMine software to perform spatial analysis on the borehole and rock formation DTM obtained in step S2.

Set the spatial relationship expression and lithology value, and assign lithology values to the borehole sections between rock layer DTMs to generate a borehole lithology table. Step S3 specifically includes the following steps:

Step S31: Add all stratigraphic codes to the lithology table obtained in step S21 under the drilling display style directory of the 3Dmine software, and set them to different colors to facilitate the differentiation of lithology sections. Set drilling constraints to select and extract lithology data. section to avoid interference from other geological section boreholes; the patterns and text in the borehole display are set to display lithology; through this operation, the lithology section can be displayed in the borehole space trajectory, and all boreholes in a single profile can be displayed independent display;

Step S32: Open the three-dimensional converted geological section where the borehole is located obtained in step S22, cut the section, and project the selected borehole trajectory to display at the corresponding position of the geological section;

Step S33: Use the ruler to query the distance between different lithology boundaries on the borehole trajectory, that is, the DTM thickness of different rock layers. Select the borehole to be edited in the 3Dmine software; fill in 0 to the first lithology interface, and the first to The distance, lithology description and stratum code of the second lithology interface are deduced in sequence until the hole depth to obtain the lithology data of a single borehole;

Step S34: If the lithology value assigned in step S33 does not completely match the lithology boundary, you need to try to increase or decrease the value of the lithology section step by step on the borehole spatial trajectory until they are completely consistent. Use a ruler to measure the DTM thickness of each rock layer based on the borehole trajectory. The lithology value assigned based on the thickness is consistent with the boundary line.

Step S35: Enter the borehole lithology records on all the geological profiles described in the above steps S31 to S34 into the lithology table, which is the borehole lithology data of the deposit.

The present invention has been described in detail with reference to the drawings and examples. However, the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the purpose of the present invention. kind of change. Contents not described in detail in the present invention can be implemented using existing technologies.

Claims (5)

1. A method for extracting borehole lithology data using the geological section borehole spatial trajectory morphology, which is characterized in that: the method includes the following steps: Step S1: Data preparation and processing: collect geological profiles and vectorize them, perform coordinate conversion on the geological profiles so that they can be rotated and erected in three-dimensional space, extract borehole positioning and inclinometer information, and establish positioning tables and inclinometer tables; as described In step S1, the 3Dmine three-dimensional software is used to perform coordinate conversion on the geological profile, and in step S3, the 3DMine software is used to perform spatial analysis on the borehole and rock formation DTM; Step S2: Demarcation of lithological boundaries Establish a lithological interface with the same lithological boundary line in different sections of the deposit. The adjacent lithological interfaces above and below are the same rock layer. Establish a lithology table and use the geological section erected in step S1 to establish a lithological interface with the same lithological boundary line in the deposit. DTM; the step S2 includes the following steps: Step S21: Create a lithology table and set the contents of the lithology table; Step S22: Extract the lithological boundary line of the geological profile, establish the rock layer DTM, perform coordinate conversion on the geological profile so that it stands at the actual position in the three-dimensional space, and drill the borehole according to the positioning table and inclinometer built in step S1. The trajectory is projected onto the converted three-dimensional spatial geological profile; Step S3: Extract borehole lithology data Perform spatial analysis on boreholes and rock formation DTMs, set spatial relationship expressions and lithology values, and assign lithology values to borehole sections between rock formation DTMs to generate a borehole lithology table; the step S3 includes the following steps: Step S31: Add all stratigraphic codes to the lithology table obtained in step S21 under the borehole display style directory, set them to different colors to facilitate the differentiation of lithology sections, and set borehole constraints to select the section for extracting lithology data. ; Step S32: Open the three-dimensional converted geological profile where the borehole is located in step S22, cut the profile, and project the selected borehole trajectory onto the corresponding position of the geological profile for display; Step S33: Use the ruler to query the distance between different lithology boundaries on the borehole trajectory, that is, the DTM thickness of different rock layers, and obtain the lithology data of a single borehole; Step S34: If the lithology value assigned in step S33 does not completely match the lithology boundary, you need to try to increase or decrease the value of the lithology section step by step on the borehole space trajectory until they are completely consistent; Step S35: Enter the borehole lithology records on all the geological profiles described in the above steps S31 to S34 into the lithology table, which is the borehole lithology data of the deposit. 2. The method for extracting borehole lithology data by utilizing geological section borehole spatial trajectory morphology according to claim 1, characterized in that: the content of the lithology table set in step S21 includes borehole name, from, to , lithology, stratigraphic code. 3. The method for extracting borehole lithology data by utilizing geological section borehole spatial trajectory morphology according to claim 2, characterized in that: the patterns and text in the borehole display in step S31 are all set to lithology display. , so that the lithological segments are displayed in the borehole spatial trajectory, and all boreholes in a single section can be displayed independently. 4. The method for extracting borehole lithology data by utilizing geological profile borehole spatial trajectory morphology according to claim 3, characterized in that: in the step S33, the specific steps of using a ruler to query the DTM thickness of different rock layers on the borehole trajectory are As follows: Select the borehole that needs to be edited, fill in the distance from 0 to the first lithology interface, the first to the second lithology interface, the lithology description and the stratigraphic code, and so on until the hole depth, to obtain a single borehole lithological data. 5. The method for extracting borehole lithology data by utilizing geological profile borehole spatial trajectory morphology according to claim 4, characterized in that: in the step S34, a ruler is used to measure the DTM thickness of each rock layer based on the borehole trajectory, The lithology value assigned based on the thickness is consistent with the boundary line.