CN107121040B - A kind of method of high-precision coal seam reservoirs structural fracture charting - Google Patents
A kind of method of high-precision coal seam reservoirs structural fracture charting Download PDFInfo
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- CN107121040B CN107121040B CN201710234902.5A CN201710234902A CN107121040B CN 107121040 B CN107121040 B CN 107121040B CN 201710234902 A CN201710234902 A CN 201710234902A CN 107121040 B CN107121040 B CN 107121040B
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- observation point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
Abstract
The invention belongs to CBM exploration and development technical fields, are related to a kind of method of high-precision coal seam reservoirs structural fracture charting.Step of the invention are as follows: one, it determines observation point spacing, observation point coordinate is determined on working base map；Two, with GPS positioning, mark observation point number；Three, it determines the construction location of observation point, judges the cutting relationship of structural fracture；Four, measure the structural fracture occurrence of observation point；Five, measure simultaneously calculating observation point structural fracture surface density；Six, the aperture in measurement construct crack judges Packing character and charges；Seven, the depth of stratum of measurement data observation point；Eight, it takes pictures to observation point, sketch obtains the development characteristics of structural fracture；Step 9 goes to next observation point, repeats step 2 to step 8.A large amount of measured data can be obtained by means of the present invention, used using the present invention in the CBM exploration and development block for having coal measures to appear, high-precision Study on Coal reservoir formation crack, and greatly reduce research cost.
Description
Technical field
The invention belongs to CBM exploration and development technical fields, are related to a kind of high-precision coal seam reservoirs structural fracture charting
Method.
Background technique
Coal seam reservoirs structural fracture is the trunk channel of coal bed gas migration, output, and development characteristics determine that coal seam reservoirs permeate
The height of property, has a major impact CBM Drilling, pressure break, mining.Coal seam reservoirs structural fracture research is always coal bed gas field
Hot spot and difficulties, but less development characteristics for considering structural fracture in CBM exploration and development at present mainly have two
Aspect reason: first, research difficulty is big, the general preservation of the coal seam reservoirs depth certain in underground can not be observed directly, obtain construction
The data of fissure system are more difficult；Second, research precision is insufficient, according to " coal field geology charting specification " (DZ/T 0175-2014),
With requirement when the progress geologic mapping of 1:10000 scale bar: in simple structure area, every sq-km geological observation point number is 20-30
A, constructing medium area is 30-45/km2, structural complex is 45-60/km2, construction pole complex area is > 60/km2；Its
Three, research method is limited, and existing research method mainly acquires sample or coring, carries out the experiment of hole-crack and observation；Or
Utilizing works well-logging method, method for numerical simulation, fractal geometry method etc. study structural fracture, but there are data for above method
The problems such as measuring less, is at high cost, precision is low, is not able to satisfy the actual demand of cbm development.
Summary of the invention
The solved the technical problems existing in the prior art of the present invention are the research sides for structural fracture of the prior art
Method there are data volumes it is few, at high cost, precision is low the problems such as, be not able to satisfy the actual demand of cbm development.
The present invention is that technical solution used by solving its technical problem is:
A kind of method of high-precision coal seam reservoirs structural fracture charting carries out as follows:
Step 1 determines structural fracture charting work using the terrain and geologic map of 1:10000 scale bar as working base map
Range, is 50-100m with observation point spacing, demarcates the position of the route and observation point that pass through on the diagram, determines observation point coordinate；
Step 2 delimited measurement range and marked according to the observation point coordinate determined in working site GPS positioning
Observation point number identifies lithology referring to card using lithology and records using the mechanical geology lining attitude of rocks；
Step 3 according to field observation and combines working base map, determines the construction location of observation point, while judging to construct
The not same period time that crack is formed, and record；
Step 4 determines a little to be the center of circle in observation point, draws a circle by radius of 2m；The circle is measured with meter scale in benefit
The length in possessive construction crack and summation in shape region according to parameter calculating observation point structural fracture surface density, and record；
Step 5, using mechanical geology lining observation point in different rock-layers, different lithology, the construction of same period time is not split
Gap occurrence, and record；
Step 6 judges filling operation using the aperture of mechanical vernier caliper measurement structural fracture, judges to fill species
Class, and record；
The depth of stratum of the main structural fracture development in observation point position is measured with meter scale in step 7, benefit, and records；
Step 8 takes pictures to observation point using camera, field geological work book, sketch, record, in case check,
The development characteristics of statistics and analysis structural fracture；
Step 9 checks, verifies all working completion, goes to next observation point, repeat step 2 to step 8.
Further, in step 3, the construction location refers to any one following situation: observation point and tomography away from
From for observation point at a distance from fold, observation point is in the turn end of fold, and observation point is in the alar part of fold.
Further, in step 4, the parameter of the measuring surface is that possessive construction is split on the area and measuring surface of measuring surface
The length of gap, the calculation formula of the structural fracture surface density k are as follows:, wherein λ is the total length of structural fracture, and δ is
Radius is the circular area of 2m.
Further, in step 5, the structural fracture occurrence includes tendency and inclination angle.
Further, in step 5, in the case where the bad measurement of the tendency of structural fracture, replaceable measurement trend.
Further, in step 6, the filling operation be full-filling, half filling and it is unfilled in any one.
Compared with the prior art, the invention has the beneficial effects that: it can obtain by means of the present invention a large amount of
Measured data can be obtained the advantage development direction of structural fracture in coal seam reservoirs according to data analysis and structural fracture develop density,
It is used using the present invention in the CBM exploration and development block for thering is coal measures to appear, high-precision Study on Coal reservoir formation crack, and
Greatly reduce research cost.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1
A kind of method of high-precision coal seam reservoirs structural fracture charting carries out as follows:
Step 1 determines structural fracture charting work using the terrain and geologic map of 1:10000 scale bar as working base map
Range, is 50m with observation point spacing, demarcates the position of the route and observation point that pass through on the diagram, determines observation point coordinate；
Step 2 delimited measurement range and marked according to the observation point coordinate determined in working site GPS positioning
Observation point number BC001 identifies lithology referring to card using lithology and records using the mechanical geology lining attitude of rocks；
Step 3, according to field observation and combine working base map, determine observation point BC001 construction location be it is following which
A kind of situation: observation point is at a distance from tomography, and for observation point at a distance from fold, observation point is in the turn end of fold, observation point
Alar part in fold；Simultaneously using being staggered between structural fracture, limit, mutually cut, track, utilization, the relationships such as transformation judge
The not same period time that structural fracture is formed, and record；
Step 4 determines a little to be the center of circle in observation point BC001, draws a circle by radius of 2m；It is surveyed using meter ruler
The length in possessive construction crack and summation in the border circular areas are measured, according to parameter calculating observation point structural fracture surface density k, meter
Calculate formula are as follows:, wherein λ is the total length of structural fracture, and δ is the circular area that radius is 2m, and carries out calculated result
Record；
Step 5, using mechanical geology lining observation point BC001 in different rock-layers, different lithology, not same period time
Structural fracture occurrence, structural fracture occurrence includes tendency and inclination angle, and is recorded；
Step 6 judges filling operation using the aperture of mechanical vernier caliper measurement structural fracture, judges to fill species
Class, and record；
The depth of stratum of the main structural fracture development of observation point BC001 is measured with meter scale in step 7, benefit, and records；
Step 8 takes pictures to observation point using camera, field geological work book, sketch, record, in case check,
The development characteristics of statistics and analysis structural fracture；
Step 9 checks, verifies all working completion, goes to next observation point BC002, repeat step 2 to step
Eight.
According to above-mentioned steps, the charting data form for obtaining observation point BC001 and observation point BC002 is as follows:
According to table it can be seen that the developmental state of structural fracture is 2 groups of constructions of BC001, BC002 observation point major developmental
Crack, the aperture of structural fracture are 2-3mm, half packed type of calcite full-filling type and mud stone；By calculating, structural fracture
Surface density is > 40, and structural fracture is more developed, the predominant direction of structural fracture be NE to NW to.It is received according to same techonosphere
To identical tectonic stress, generate the principle of similar structural fracture, the predominant direction of coal seam reservoirs structural fracture be NE to and NW
To structural fracture is more developed.
Embodiment 2
A kind of method of high-precision coal seam reservoirs structural fracture charting carries out as follows:
Step 1 determines structural fracture charting work using the terrain and geologic map of 1:10000 scale bar as working base map
Range, is 50m with observation point spacing, demarcates the position of the route and observation point that pass through on the diagram, determines observation point coordinate；
Step 2 delimited measurement range and marked according to the observation point coordinate determined in working site GPS positioning
Observation point number BC003 identifies lithology referring to card using lithology and records using the mechanical geology lining attitude of rocks；
Step 3, according to field observation and combine working base map, determine observation point BC003 construction location be it is following which
A kind of situation: observation point is at a distance from tomography, and for observation point at a distance from fold, observation point is in the turn end of fold, observation point
Alar part in fold；Simultaneously using being staggered between structural fracture, limit, mutually cut, track, utilization, the relationships such as transformation judge
The not same period time that structural fracture is formed, and record；
Step 4 determines a little to be the center of circle in observation point BC003, draws a circle by radius of 2m；It is surveyed using meter ruler
The length in possessive construction crack and summation in the border circular areas are measured, according to parameter calculating observation point BC003 structural fracture surface density
K, its calculation formula is:, wherein λ is the total length of structural fracture, and δ is the circular area that radius is 2m, and is counted
Calculate result record；
Step 5, using mechanical geology lining observation point BC003 in different rock-layers, different lithology, not same period time
Structural fracture occurrence, structural fracture occurrence includes tendency and inclination angle, and is recorded；
Step 6 judges filling operation using the aperture of mechanical vernier caliper measurement structural fracture, judges to fill species
Class, and record；
The depth of stratum of the main structural fracture development of observation point BC003 is measured with meter scale in step 7, benefit, and records；
Step 8 takes pictures to observation point BC003 using camera, field geological work book, sketch, record, in case
It checks, the development characteristics of statistics and analysis structural fracture；
Step 9 checks, verifies all working completion, goes to next observation point BC004, repeat step 2 to step
Eight.
According to above-mentioned steps, the charting data form for obtaining observation point BC003 and observation point BC004 is as follows:
According to table it can be seen that the developmental state of structural fracture is BC003, BC004 observation point major developmental 1-2 group structure
Crack is made, the aperture of structural fracture is 1-0.5mm, unfilled；By calculating, the surface density of structural fracture is < 40, and construction is split
Gap compared with agensis, the predominant direction of structural fracture be NE to.Identical tectonic stress is received according to same techonosphere, generates phase
As structural fracture principle, the predominant direction of coal seam reservoirs structural fracture is NE to structural fracture is compared with agensis.
The above is only the embodiment of the present invention, not does limitation in any form to the present invention, any to be familiar with sheet
Technical professional makes more when using the technology contents of the disclosure above without departing from the scope of the present invention
Dynamic or modification equivalent variations equivalent embodiment, but anything that does not depart from the technical scheme of the invention content, still fall within the present invention
In the range of technical solution.
Claims (5)
1. a kind of method of high-precision coal seam reservoirs structural fracture charting, which is characterized in that carry out as follows:
Step 1 determines the range of structural fracture charting work using the terrain and geologic map of 1:10000 scale bar as working base map,
It is 50-100m with observation point spacing, demarcates the position of the route and observation point that pass through on the diagram, determine observation point coordinate；
Step 2 delimit measurement range and marks observation according to the observation point coordinate determined in working site GPS positioning
Point number identifies lithology referring to card using lithology and records using the mechanical geology lining attitude of rocks；
Step 3 according to field observation and combines working base map, determines the construction location of observation point, while judging structural fracture
The not same period time formed, and record；
Step 4 determines a little to be the center of circle in observation point, draws a circle by radius of 2m；The circle is measured with meter scale in benefit
The length in possessive construction crack and summation in domain according to parameter calculating observation point structural fracture surface density, and record；
Wherein, the calculation formula of the structural fracture surface density k are as follows:, wherein λ is the total length of structural fracture, and δ is half
Diameter is the circular area of 2m；
Step 5, using mechanical geology lining observation point in different rock-layers, different lithology, the structural fracture of same period time does not produce
Shape, and record；
Step 6 judges filling operation using the aperture of mechanical vernier caliper measurement structural fracture, judges to fill species, and
Record；
The depth of stratum of the main structural fracture development in observation point position is measured with meter scale in step 7, benefit, and records；
Step 8 takes pictures to observation point using camera, field geological work book, sketch, record, in case checking, statistics
With the development characteristics of analysis structural fracture；
Step 9 checks, verifies all working completion, goes to next observation point, repeat step 2 to step 8.
2. a kind of method of high-precision coal seam reservoirs structural fracture charting according to claim 1, which is characterized in that in step
In three, the construction location refers to any one following situation: observation point at a distance from tomography, observation point at a distance from fold,
Observation point is in the turn end of fold, and observation point is in the alar part of fold.
3. a kind of method of high-precision coal seam reservoirs structural fracture charting according to claim 1, which is characterized in that in step
In five, the structural fracture occurrence includes tendency and inclination angle.
4. a kind of method of high-precision coal seam reservoirs structural fracture charting according to claim 1, which is characterized in that in step
In five, in the case where the bad measurement of the tendency of structural fracture, replaceable measurement trend.
5. a kind of method of high-precision coal seam reservoirs structural fracture charting according to claim 1, which is characterized in that in step
In six, the filling operation be full-filling, half filling and it is unfilled in any one.
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| CN201710234902.5A CN107121040B (en) | 2017-04-12 | 2017-04-12 | A kind of method of high-precision coal seam reservoirs structural fracture charting |
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| CN201710234902.5A CN107121040B (en) | 2017-04-12 | 2017-04-12 | A kind of method of high-precision coal seam reservoirs structural fracture charting |
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| CN107121040B true CN107121040B (en) | 2019-06-21 |
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| JP2005333020A (en) * | 2004-05-20 | 2005-12-02 | National Institute Of Advanced Industrial & Technology | Open-type explosionproof container |
| GB2467651A (en) * | 2009-02-10 | 2010-08-11 | Charlton & Jenrick Ltd | A stove with a panel supplying air to a gap around a baffle |
| CN102536223A (en) * | 2012-01-16 | 2012-07-04 | 中国石油大学(华东) | Rapid calculation method for porosity of coal seam fracture |
| CN103163134A (en) * | 2013-02-16 | 2013-06-19 | 肖建新 | Coal reservoir fracture observation submicroscopic analysis technology |
| CN105093352A (en) * | 2015-08-11 | 2015-11-25 | 武汉迈格睿地质环境科技有限公司 | Method for measuring and calculating rock mass fracture rate in field |
| CN105223337A (en) * | 2015-10-22 | 2016-01-06 | 重庆大学 | The three-dimensional simulation method of goaf cracked district form |
-
2017
- 2017-04-12 CN CN201710234902.5A patent/CN107121040B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005333020A (en) * | 2004-05-20 | 2005-12-02 | National Institute Of Advanced Industrial & Technology | Open-type explosionproof container |
| GB2467651A (en) * | 2009-02-10 | 2010-08-11 | Charlton & Jenrick Ltd | A stove with a panel supplying air to a gap around a baffle |
| CN102536223A (en) * | 2012-01-16 | 2012-07-04 | 中国石油大学(华东) | Rapid calculation method for porosity of coal seam fracture |
| CN103163134A (en) * | 2013-02-16 | 2013-06-19 | 肖建新 | Coal reservoir fracture observation submicroscopic analysis technology |
| CN105093352A (en) * | 2015-08-11 | 2015-11-25 | 武汉迈格睿地质环境科技有限公司 | Method for measuring and calculating rock mass fracture rate in field |
| CN105223337A (en) * | 2015-10-22 | 2016-01-06 | 重庆大学 | The three-dimensional simulation method of goaf cracked district form |
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