CN111192359A - Method for extracting lithology data of drill hole by utilizing geological profile drill hole space track form - Google Patents
Method for extracting lithology data of drill hole by utilizing geological profile drill hole space track form Download PDFInfo
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- 238000005553 drilling Methods 0.000 claims abstract description 54
- 239000011435 rock Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000012732 spatial analysis Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 11
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/05—Geographic models
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2200/00—Indexing scheme for image data processing or generation, in general
- G06T2200/08—Indexing scheme for image data processing or generation, in general involving all processing steps from image acquisition to 3D model generation
Abstract
The invention belongs to the technical field of three-dimensional geological modeling, and particularly discloses a method for extracting lithology data of a drill hole by utilizing a geological profile drill hole space track form, which comprises the following steps of: step S1, collecting and vectorizing a geological profile, performing coordinate conversion on the geological profile to enable the geological profile to rotate and stand in a three-dimensional space, extracting drilling hole positioning and inclination measuring information, and establishing a positioning table and an inclination measuring table; step S2, establishing lithologic interfaces on the same lithologic boundary line of different sections of the deposit, wherein the same rock stratum is formed between the upper lithologic interface and the lower lithologic interface which are adjacent; establishing a lithology table, and establishing a rock stratum DTM for the same lithology boundary line in the deposit by using the geological profile erected in the step S1; and S3, performing spatial analysis on the drilling holes and the rock stratum DTM, setting a spatial relation expression and a lithology value, assigning a lithology value to the drilling hole sections among the rock stratum DTM, and generating a drilling hole lithology table. The method provides technical support for three-dimensional modeling lithologic data preparation work, and solves the technical problem of three-dimensional geological modeling based on the profile.
Description
Technical Field
The invention belongs to the technical field of three-dimensional geological modeling, and particularly discloses a method for extracting lithology data of a drill hole by utilizing a geological profile drill hole space track form.
Background
The three-dimensional geological modeling mainly depends on data, and under the support of the data, the modeling method mainly comprises three-dimensional modeling based on drilling data, three-dimensional modeling based on geological profile data and three-dimensional modeling based on graph and section data under the condition of less data. In a geological profile data-based modeling method (lacking original drilling geological record data), borehole inclination measurement, positioning, lithology and other data required by modeling need to be extracted according to a geological profile, and extraction of borehole lithology data by utilizing a geological profile borehole space track form is of great importance. Extracting lithology data based on the formation boundary and the drilling track form, manually inputting the data, and continuously trying different data until the lithology is completely matched with the formation interface.
Disclosure of Invention
The invention aims to provide a method for extracting lithology data of a drill hole by utilizing a geological profile drill hole 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 is as follows: a method for extracting lithology data of a drill hole by utilizing a geological profile drill hole space track form comprises the following steps:
step S1: preparing and processing data, collecting and vectorizing a geological profile, performing coordinate conversion on the geological profile to enable the geological profile to rotate and stand in a three-dimensional space, extracting drilling hole positioning and inclination measuring information, and establishing a positioning table and an inclination measuring table;
step S2: lithologic boundary line partitioning
Establishing lithologic interfaces on the same lithologic boundary line of different sections of the ore deposit, wherein the same rock stratum is formed between the upper lithologic interface and the lower lithologic interface which are adjacent; establishing a lithology table, and establishing a rock stratum DTM for the same lithology boundary line in the deposit by using the geological profile erected in the step S1;
step S3: extracting borehole lithology data
And performing spatial analysis on the drilling hole and the rock stratum DTM, setting a spatial relation expression and a lithology value, and assigning a lithology value to the drilling hole section between the rock stratum DTM, so that a drilling hole lithology table can be generated.
In the step S1, coordinate transformation is performed on the geological profile by using 3Dmine three-dimensional software, and in the step S3, spatial analysis is performed on the borehole and the formation DTM by using 3Dmine software.
The step S2 includes the following steps:
step S21: establishing a lithology table, and setting the contents of the lithology table;
step S22: and (4) extracting a lithologic boundary of the geological profile, establishing a rock stratum DTM, carrying out coordinate conversion on the geological profile to enable the geological profile to be located at the actual position of the three-dimensional space, and projecting the drilling track onto the converted three-dimensional space geological profile according to the positioning table and the inclination measuring table established in the step S1.
The contents of the lithology table set in the step S21 include borehole name, from, to, lithology, and formation code.
The step S3 includes the steps of:
step S31: adding all stratum codes to the lithology table obtained in the step S21 under the drilling hole display style directory, setting the stratum codes to be different colors so as to distinguish lithology sections, and setting drilling hole constraints for selecting a section for extracting lithology data; step S32: opening the three-dimensional converted geological profile where the drill hole is located in the step S22, cutting the profile, and projecting the selected drill hole track at a position corresponding to the geological profile for display;
step S33: using a ruler to inquire the distance between different lithologic boundary lines, namely the thickness of DTM of different rock stratums, of the drilling track, and obtaining lithologic data of a single drilling hole;
step S34: if the assigned lithology value and the lithology boundary in the step S33 are not completely matched, the drilling space trajectory needs to be tried to increase or decrease the numerical value of the lithology section by section until the assigned lithology value and the lithology boundary are completely matched; step S35: and respectively recording the drilling lithology records on all the geological section maps obtained in the steps S31 to S34 into a lithology table, namely the drilling lithology data of the deposit.
The patterns and characters in the drilling hole display in the step S31 are set to be lithological display, so that lithological segments are displayed in the drilling hole space trajectory, and all drilling holes of a single section can be independently displayed.
The specific steps of querying the borehole trajectory for the thickness of the DTM of different rock formations using the ruler in step S33 are as follows: selecting the drill holes to be edited, filling in 0 to a first lithology interface, the distance from the first lithology interface to a second lithology interface, lithology description and stratum code number, and repeating the steps until the hole depth, and obtaining the lithology data of the single drill hole.
In step S34, the thickness of each DTM of the rock formation is measured by using a ruler and the drilling trajectory as a reference, and the assigned lithology value is matched with the boundary line based on the thickness.
The invention has the beneficial technical effects that:
(1) the invention provides a method for extracting lithology data of a drill hole by utilizing a space track form of the drill hole of a geological profile, which solves the technical problem of processing the lithology data when original drilling geological record data is lacked in three-dimensional geological modeling based on a profile.
(2) The invention provides a method for extracting lithology data of a drill hole by utilizing a geological profile drill hole space track form, which breaks through the defects of the traditional lithology data extraction, can more quickly and accurately extract profile lithology information, 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 using a geological profile borehole spatial trajectory configuration, according to the present invention;
fig. 2 is a schematic diagram of extracting lithology data information provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
A method for extracting lithology data of a drill hole by utilizing a geological profile drill hole space track form comprises the following steps:
step S1: preparing and processing data;
collecting and vectorizing a geological profile, performing coordinate conversion on the geological profile by using 3Dmine three-dimensional software to enable the geological profile to rotate and stand in a three-dimensional space, extracting drilling hole positioning and inclination measuring information, and establishing a positioning table and an inclination measuring table.
Step S2: dividing lithologic boundary lines;
and establishing lithologic interfaces on the same lithologic boundary line of different sections of the ore deposit, wherein the same rock stratum is formed between the upper lithologic interface and the lower lithologic interface which are adjacent. And (5) establishing a lithology table, and establishing a rock stratum DTM for the same lithology boundary in the deposit by using the geological section erected in the step S1. Step S2 specifically includes the following steps:
step S21: establishing a lithology table, and setting contents of the lithology table, including the name, the number, the arrival, the lithology and the stratum code number of a drill hole;
step S22: and (4) extracting the lithologic boundary 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 be erected at the actual position of a three-dimensional space, and projecting the drilling track onto the converted geological profile of the three-dimensional space according to the established positioning table and inclination measuring table.
Step S3: extracting lithology data of the drill hole;
the borehole and formation DTM obtained in step S2 are spatially analyzed by 3d mine software,
setting spatial relation expression and lithology values, assigning lithology values to the drilling sections among the DTMs, and generating a drilling lithology table. Step S3 specifically includes the following steps:
step S31: adding all stratum codes to the lithology table obtained in the step S21 under the 3Dmine software drilling hole display style directory, setting the stratum codes to be different colors so as to distinguish lithology sections, setting drilling hole constraint for selecting a section for extracting lithology data, and avoiding interference of drilling holes of other geological sections; the patterns and characters in the drilling display are set to be lithologic display; through the operation, the lithologic section can be displayed in the drilling space track, and all the drilling holes of the single section can be independently displayed;
step S32: opening the three-dimensional converted geological profile where the drill hole is located obtained in the step S22, cutting the profile, and projecting the selected drill hole track at a position corresponding to the geological profile for display;
step S33: using a ruler to inquire the distance between different lithologic boundary lines, namely different rock stratum DTM thicknesses, of the drilling track, and selecting the drilling hole to be edited in 3Dmine software; respectively filling 0 to a first lithology interface, the distance from the first lithology interface to a second lithology interface, lithology description and stratum code, and repeating the steps until the hole depth, so as to obtain lithology data of a single drill hole;
step S34: if the lithology values assigned in step S33 do not completely match the lithology boundary, an attempt is made to increase or decrease the lithology segment number segment by segment until the drill hole space trajectory completely matches. The thickness of the DTM of each rock stratum is measured by using a ruler and the drilling track as a reference, and the assigned lithology value is matched with the boundary line based on the thickness.
Step S35: and respectively recording the drilling lithology records on all the geological section maps obtained in the steps S31 to S34 into a lithology table, namely the drilling lithology data of the deposit.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the examples described above, 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 prior art can be adopted in the content which is not described in detail in the invention.
Claims (8)
1. A method for extracting lithology data of a drill hole by utilizing a geological profile drill hole space track form is characterized by comprising the following steps of: the method comprises the following steps:
step S1: preparing and processing data, collecting and vectorizing a geological profile, performing coordinate conversion on the geological profile to enable the geological profile to rotate and stand in a three-dimensional space, extracting drilling hole positioning and inclination measuring information, and establishing a positioning table and an inclination measuring table;
step S2: lithologic boundary line partitioning
Establishing lithologic interfaces on the same lithologic boundary line of different sections of the ore deposit, wherein the same rock stratum is formed between the upper lithologic interface and the lower lithologic interface which are adjacent; establishing a lithology table, and establishing a rock stratum DTM for the same lithology boundary line in the deposit by using the geological profile erected in the step S1;
step S3: extracting borehole lithology data
And performing spatial analysis on the drilling hole and the rock stratum DTM, setting a spatial relation expression and a lithology value, and assigning a lithology value to the drilling hole section between the rock stratum DTM, so that a drilling hole lithology table can be generated.
2. The method for extracting the lithology data of the drill hole by utilizing the spatial track shape of the drill hole of the geological profile as claimed in claim 1, wherein: in the step S1, coordinate transformation is performed on the geological profile by using 3Dmine three-dimensional software, and in the step S3, spatial analysis is performed on the borehole and the formation DTM by using 3Dmine software.
3. The method for extracting the lithology data of the drill hole by utilizing the spatial track shape of the drill hole of the geological profile as claimed in claim 2, wherein: the step S2 includes the following steps:
step S21: establishing a lithology table, and setting the contents of the lithology table;
step S22: and (4) extracting a lithologic boundary of the geological profile, establishing a rock stratum DTM, carrying out coordinate conversion on the geological profile to enable the geological profile to be located at the actual position of the three-dimensional space, and projecting the drilling track onto the converted three-dimensional space geological profile according to the positioning table and the inclination measuring table established in the step S1.
4. The method for extracting the lithology data of the drill hole by utilizing the spatial track shape of the drill hole of the geological profile as claimed in claim 3, wherein: the contents of the lithology table set in the step S21 include borehole name, from, to, lithology, and formation code.
5. The method for extracting the lithology data of the drill hole by using the spatial trajectory shape of the drill hole of the geological profile as claimed in claim 4, wherein: the step S3 includes the steps of:
step S31: adding all stratum codes to the lithology table obtained in the step S21 under the drilling hole display style directory, setting the stratum codes to be different colors so as to distinguish lithology sections, and setting drilling hole constraints for selecting a section for extracting lithology data; step S32: opening the three-dimensional converted geological profile where the drill hole is located in the step S22, cutting the profile, and projecting the selected drill hole track at a position corresponding to the geological profile for display;
step S33: using a ruler to inquire the distance between different lithologic boundary lines, namely the thickness of DTM of different rock stratums, of the drilling track, and obtaining lithologic data of a single drilling hole;
step S34: if the assigned lithology value and the lithology boundary in the step S33 are not completely matched, the drilling space trajectory needs to be tried to increase or decrease the numerical value of the lithology section by section until the assigned lithology value and the lithology boundary are completely matched;
step S35: and respectively recording the drilling lithology records on all the geological section maps obtained in the steps S31 to S34 into a lithology table, namely the drilling lithology data of the deposit.
6. The method for extracting the lithology data of the drill hole by utilizing the spatial track shape of the drill hole of the geological profile as claimed in claim 5, wherein: the patterns and characters in the drilling hole display in the step S31 are set to be lithological display, so that lithological segments are displayed in the drilling hole space trajectory, and all drilling holes of a single section can be independently displayed.
7. The method for extracting the lithology data of the drill hole by utilizing the spatial track shape of the drill hole of the geological profile as claimed in claim 6, wherein: the specific steps of querying the borehole trajectory for the thickness of the DTM of different rock formations using the ruler in step S33 are as follows: selecting the drill holes to be edited, filling in 0 to a first lithology interface, the distance from the first lithology interface to a second lithology interface, lithology description and stratum code number, and repeating the steps until the hole depth, and obtaining the lithology data of the single drill hole.
8. The method for extracting the lithology data of the drill hole by utilizing the spatial track shape of the drill hole of the geological profile as claimed in claim 7, wherein: in step S34, the thickness of each DTM of the rock formation is measured by using a ruler and the drilling trajectory as a reference, and the assigned lithology value is matched with the boundary line based on the thickness.
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| CN114332400A (en) * | 2022-03-08 | 2022-04-12 | 齐鲁工业大学 | Geological profile vector diagram digitalization method |
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Inventor after: Cao Ke Inventor after: Zhu Pengfei Inventor after: Li Xiaocui Inventor after: Bai Yun Inventor after: Kong Weihao Inventor after: Liu Linying Inventor after: Sun Lu Inventor before: Cao Ke Inventor before: Zhu Pengfei Inventor before: Li Xiaocui Inventor before: Bai Yun Inventor before: Kong Weihao Inventor before: Liu Linying Inventor before: Sun Lu |