CN111192359B - Method for extracting borehole lithology data by using geological section borehole space track morphology - Google Patents
Method for extracting borehole lithology data by using geological section borehole space track morphology Download PDFInfo
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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
Technical Field
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.
Background
Three-dimensional geologic modeling relies mainly on data, and under data support, modeling methods mainly include three-dimensional modeling based on borehole data, three-dimensional modeling based on geologic profile data, and three-dimensional modeling based on map-cut profile data with less data. In the modeling method based on geological section data (missing original drilling geological logging data), data such as borehole inclination, positioning, lithology and the like required by modeling are required to be extracted according to a geological section map, and it is important to extract borehole lithology data by using a geological section borehole space track form. The lithology data is extracted based on the formation boundary and the borehole trajectory morphology, manual data input is required, and different data are continuously tried until the lithology is completely matched with the formation boundary.
Disclosure of Invention
The invention aims to provide a method for extracting borehole lithology data by using a geological profile borehole space track form, which provides technical support for three-dimensional modeling lithology data preparation work and solves the technical problem of three-dimensional geological modeling based on a profile.
The technical scheme for realizing the purpose of the invention comprises the following steps: a method of extracting borehole lithology data using a geological profile borehole spatial trajectory morphology, the method comprising the steps of:
step S1: preparing and processing data, collecting geological section pictures and vectorizing, converting coordinates of the geological section pictures to enable the geological section pictures to be rotationally erected in a three-dimensional space, extracting drilling positioning and inclinometry information, and establishing a positioning table and an inclinometry table;
step S2: lithology boundary line division
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;
step S3: extracting borehole lithology data
And (3) carrying out spatial analysis on the drill holes and the rock stratum DTM, setting spatial relation expression and lithology values, and endowing lithology values to drill hole sections among the rock stratum DTM to generate a drill hole lithology table.
In the step S1, the 3DMine three-dimensional software is used for carrying out coordinate transformation on the geological section, and in the step S3, the 3DMine software is used for carrying out space analysis on the drilling hole and the rock stratum DTM.
The step S2 comprises the following steps:
step S21: establishing a lithology table and setting lithology table contents;
step S22: and (3) extracting lithology boundary lines of the geological section, establishing a rock stratum DTM, performing coordinate transformation on the geological section to enable the geological section to stand at the actual position of the three-dimensional space, and projecting a drilling track to the transformed three-dimensional space geological section according to the positioning table and the inclinometer built in the step (S1).
The contents of the lithology table set in the step S21 include the drilling name, the from, to, lithology and formation code.
The step S3 includes the steps of:
step S31: adding all stratum codes into the lithology table obtained in the step S21 under the drilling display style directory, setting the stratum codes into different colors so as to distinguish lithology sections, and setting drilling constraint for selecting a section for extracting lithology data; step S32: opening a three-dimensional converted geological profile of the drilled hole in the step S22, cutting the profile, and projecting the selected drilling track to a position corresponding to the geological profile for display;
step S33: inquiring distances among different lithology boundary lines, namely different rock layer DTM thicknesses, of the drilling tracks by using the scale to acquire lithology data of a single drilling hole;
step S34: if the lithology value and lithology boundary line in the step S33 are not completely matched, the drilling space track is tried to be gradually increased or decreased until the lithology value and lithology boundary line are completely matched; step S35: and (3) recording the lithology records of the drilling holes on all the geological section views in the steps S31 to S34 into a lithology table, namely drilling lithology data of the ore deposit.
The patterns and characters in the drilling display in the step S31 are set to be lithology display, so that lithology sections are displayed in the drilling space track, and all the drilling holes with single section can be independently displayed.
The specific steps of using the scale to query the drilling track for different rock layer DTM thicknesses in the step S33 are as follows: selecting the drilling holes to be edited, respectively filling in 0 to a first lithology interface, and obtaining lithology data of a single drilling hole by the distance, lithology description and stratum code of the first lithology interface to the second lithology interface and the like until the hole depth.
In the step S34, the thickness of each rock layer DTM is measured by using the scale and the drilling track as the reference, and the lithology value and the boundary line are matched based on the thickness.
The beneficial technical effects of the invention are as follows:
(1) The invention provides a method for extracting borehole lithology data by using a geological section borehole space track form, which solves the technical problem of lithology data processing when original drilling geological logging data is lacked in three-dimensional geological modeling based on a section diagram.
(2) The invention provides a method for extracting borehole lithology data by using a geological section borehole space track form, which breaks through the defect of the prior lithology data extraction, can extract section lithology information more rapidly and accurately, provides favorable data support for three-dimensional geological modeling, and optimizes the precision of a three-dimensional model.
Drawings
FIG. 1 is a flow chart of a method for extracting borehole lithology data by using a geological profile borehole space trajectory morphology;
fig. 2 is a schematic diagram of lithology data information extraction provided by the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
A method of extracting borehole lithology data using a geological profile borehole spatial trajectory morphology, the method comprising the steps of:
step S1: preparing and processing data;
and collecting and vectorizing the geological profile, performing coordinate transformation on the geological profile by using 3Dmine three-dimensional software 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.
Step S2: lithology boundary line division;
and establishing lithologic boundaries of different sections of the ore deposit, wherein the lithologic boundaries are the same rock stratum. And (3) establishing a lithology table, and establishing a rock stratum DTM by utilizing the geological profile erected in the step S1 to establish the same lithology boundary in the ore deposit. The step S2 specifically comprises the following steps:
step S21: establishing a lithology table, and setting lithology table contents including drilling names, from, to, lithology and stratum codes;
step S22: and (3) extracting lithology boundary lines of the geological profile erected in the step (S1), establishing a rock stratum DTM, performing coordinate conversion on the geological profile by using 3Dmine three-dimensional software to enable the geological profile to stand at the actual position of a three-dimensional space, and projecting a drilling track onto the converted three-dimensional space geological profile according to the established positioning table and the inclinometer.
Step S3: extracting drill hole lithology data;
the borehole and formation DTM obtained in step S2 were spatially analyzed by 3DMine software,
and setting a spatial relation expression and a lithology value, and endowing lithology values to the drilling sections among the rock stratum DTMs to generate a drilling lithology table. The step S3 specifically comprises the following steps:
step S31: adding all stratum codes into the lithology table obtained in the step S21 under the 3Dmine software drilling display style directory, setting the stratum codes into different colors so as to distinguish lithology sections, and setting drilling constraint for selecting a section for extracting lithology data so as to avoid being disturbed by drilling of other geological sections; patterns and characters in the drilling display are set to be rock display; the lithology section can be displayed in the drilling space track through the operation, and all the drilling holes with single section can be independently displayed;
step S32: opening the three-dimensional converted geological profile of the drilled hole obtained in the step S22, cutting the profile, and projecting the selected drilling track to a position corresponding to the geological profile for display;
step S33: inquiring distances between different lithology boundaries, namely different rock layer DTM thicknesses, on the drilling track by using a scale, and selecting a drilling hole to be edited in 3Dmine software; filling in 0 to a first lithology interface, respectively, and obtaining lithology data of a single drilling hole by the distance, lithology description and stratum code number of the first lithology interface to the second lithology interface and the like until the hole depth;
step S34: if the lithology value and lithology boundary lines assigned in step S33 are not completely coincident, an attempt is made to increase or decrease the value of the lithology segment by segment on the borehole space trajectory until complete coincidence. And measuring the thickness of each rock layer DTM by using the scale and taking the drilling track as a reference, wherein the lithology value given by the thickness is consistent with the boundary line.
Step S35: and (3) recording the lithology records of the drilling holes on all the geological section views in the steps S31 to S34 into a lithology table, namely drilling lithology data of the ore deposit.
The present invention has been described in detail with reference to the drawings and the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (5)
1. A method for extracting borehole lithology data by using a geological profile borehole space trajectory is characterized by comprising the following steps: the method comprises the following steps:
step S1: preparing and processing data, collecting geological section pictures and vectorizing, converting coordinates of the geological section pictures to enable the geological section pictures to be rotationally erected in a three-dimensional space, extracting drilling positioning and inclinometry information, and establishing a positioning table and an inclinometry table; in the step S1, coordinate conversion is carried out on the geological profile by using 3DMine three-dimensional software, and in the step S3, space analysis is carried out on drilling holes and rock layer DTM by using 3DMine software;
step S2: lithology boundary line division
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; the step S2 comprises the following steps:
step S21: establishing a lithology table and setting lithology table contents;
step S22: extracting lithology boundary lines of the geological section, establishing a rock stratum DTM, performing coordinate transformation on the geological section to enable the geological section to stand at the actual position of the three-dimensional space, and projecting a drilling track to the transformed three-dimensional space geological section according to the positioning table and the inclinometer built in the step S1;
step S3: extracting borehole lithology data
Performing spatial analysis on the drill holes and the rock stratum DTM, setting spatial relation expression and lithology values, and endowing lithology values to drill hole sections among the rock stratum DTM to generate a drill hole lithology table; the step S3 includes the steps of:
step S31: adding all stratum codes into the lithology table obtained in the step S21 under the drilling display style directory, setting the stratum codes into different colors so as to distinguish lithology sections, and setting drilling constraint for selecting a section for extracting lithology data; step S32: opening a three-dimensional converted geological profile of the drilled hole in the step S22, cutting the profile, and projecting the selected drilling track to a position corresponding to the geological profile for display;
step S33: inquiring distances among different lithology boundary lines, namely different rock layer DTM thicknesses, of the drilling tracks by using the scale to acquire lithology data of a single drilling hole;
step S34: if the lithology value and lithology boundary line assigned in the step S33 are not completely matched, the step S is to try to increase or decrease the lithology section value of the drilling space track section by section until the lithology section and the lithology boundary line are completely matched;
step S35: and (3) recording the lithology records of the drilling holes on all the geological section views in the steps S31 to S34 into a lithology table, namely drilling lithology data of the ore deposit.
2. The method for extracting borehole lithology data using geologic profile borehole spatial trajectory morphology of claim 1, wherein: the contents of the lithology table set in the step S21 include the drilling name, the from, to, lithology and formation code.
3. The method for extracting borehole lithology data using geologic profile borehole spatial trajectory morphology of claim 2, wherein: the patterns and characters in the drilling display in the step S31 are set to be lithology display, so that lithology sections are displayed in the drilling space track, and all the drilling holes with single section can be independently displayed.
4. A method of extracting borehole lithology data using geologic profile borehole spatial trajectory morphology as claimed in claim 3, wherein: the specific steps of using the scale to query the drilling track for different rock layer DTM thicknesses in the step S33 are as follows: selecting the drilling holes to be edited, respectively filling in 0 to a first lithology interface, and obtaining lithology data of a single drilling hole by the distance, lithology description and stratum code of the first lithology interface to the second lithology interface and the like until the hole depth.
5. The method for extracting borehole lithology data using geologic profile borehole spatial trajectory morphology of claim 4, wherein: in the step S34, the thickness of each rock layer DTM is measured by using the scale and the drilling track as the reference, and the lithology value and the boundary line are matched based on the thickness.
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| CN113420348B (en) * | 2021-06-07 | 2023-01-24 | 核工业北京地质研究院 | Method for rapidly drawing uranium mine exploration line profile map |
| CN114332400A (en) * | 2022-03-08 | 2022-04-12 | 齐鲁工业大学 | Geological profile vector diagram digitalization method |
| CN117392336B (en) * | 2023-09-26 | 2024-09-10 | 深圳市地质环境研究院有限公司 | Method for generating reflecting real three-dimensional geological section |
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