CN108278079A - Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool - Google Patents
Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool Download PDFInfo
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- CN108278079A CN108278079A CN201810021040.2A CN201810021040A CN108278079A CN 108278079 A CN108278079 A CN 108278079A CN 201810021040 A CN201810021040 A CN 201810021040A CN 108278079 A CN108278079 A CN 108278079A
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- 239000003245 coal Substances 0.000 title claims abstract description 264
- 238000005553 drilling Methods 0.000 title claims abstract description 172
- 238000005520 cutting process Methods 0.000 title claims abstract description 143
- 239000011435 rock Substances 0.000 title claims abstract description 93
- 241000167854 Bourreria succulenta Species 0.000 title claims abstract description 56
- 235000019693 cherries Nutrition 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007787 solid Substances 0.000 claims abstract description 92
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 238000010276 construction Methods 0.000 claims abstract description 26
- 238000005728 strengthening Methods 0.000 claims abstract description 9
- 238000009533 lab test Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005482 strain hardening Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 210000002445 nipple Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/05—Swivel joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of reinforcing cherry coal rock intensity layered cutting drilling method and drilling tools, are based on coal petrography solid coefficientfDetermine that ratio is strengthened in drillingd q, it is based on coal petrography solid coefficientf、Gas pressurepDetermine that Coal-Rock Bits cutting number of plies N, cutting thickness H, cutting axis determine the structure design form for strengthening cherry coal rock intensity layered cutting drilling tool away from L.Strengthen cherry coal rock intensity layered cutting drilling tool, including coal petrography strengthens drill bit, rotation seal joint, Coal-Rock Bits, bit adapter, drilling rod.The present invention is directed to cherry coal rock drilling technology problem, consider coal seam geological condition, reinforcing cherry coal rock intensity layered cutting drilling method and drilling tool are invented, using reinforcing cherry coal rock intensity layered cutting drilling tool construction drill, realize the collaboration drilling process scheme that cherry coal rock leading portion is strengthened, back segment cutting is crept into, the drilling powers such as collapse hole, spray orifice phenomenon can be effectively reduced to the influence to drilling construction, be conducive to the drilling effect for improving weak coal bearing seams.
Description
Technical field
The invention belongs to weak coal rock layer drilling project technical fields, and in particular to a kind of layering of reinforcing cherry coal rock intensity is cut
Cut drilling method and drilling tool.
Background technology
Currently, weak coal rock layer drilling construction is one great difficult problem of drilling project technical field.Weak coal rock layer drilling
In the process, it since drilling deflection is big and easy unstable failure, causes that drilling resistance is big, deslagging is difficult, causes that drilling depth is shallow, bores
It is low into efficiency, while the boring accidents such as bit freezing, breaking of rod take place frequently in drilling process.Especially underground coal mine soft seam containing gas drills
Construction is acted on by factors such as crustal stress, gas pressure, tectonic stresses, and the deformation that drills, destruction are extremely serious, and drilling resistance is big, arranges
Slag space easily blocks, and the drillings accidents such as the breaking of rod, drilling gas burning easily occur in drilling process.Problem is crept into for cherry coal rock,
Scientific research and engineering staff have carried out a large amount of research, have developed serial drilling method and new drilling tool, for example, patent name is
" creeping into closed spiral guard aperture drilling tool and its application method for weak seam "（ZL201410567089.X）, " be used for cherry coal
Rock creeps into the porous turbulent release drilling tool of binary channels and its construction method "（ZL201310568692.5）, " be used for soft prominent coal
The anti-blocking drilling tool of deslagging and its application method in layer drilling bilayer "（ZL201310566830.6）, " outburst coal seam hole cooling bore
Tool and its drilling method "（ZL200610111830.7）, " for mash gas pumping drilling construction low helical abrasion-proof drill rod and its add
Work technique "（ZL200810049974.3）, " Asymmetric special-section drill rod "（ZL200910064223.3）, " special-shaped more ribs are carved
Traverse drill bar "（ZL200910064973.0）Preferable drilling effect has all been got, China's cherry coal rock has been advanced to a certain extent and bores
Visit the raising of engineering technology level.For the drilling construction of weak coal and rock, if it is possible to the intensity for improving weak coal and rock,
In drilling process, collapse hole phenomenon is advantageously reduced or avoided, reduces drilling resistance indirectly, is conducive to promote drilling results.Mesh
Before, domestic and international scientific research personnel has also carried out a large amount of research, and proposes certain methods, for example, proposing using pressurize drilling, admittedly
The breast wall technologies such as wall liquid carry out Reinforcing hole wall, reduce influence of the borehole collapse to drilling, but these technologies are applied to nearly horizontal gas
Extraction borehole, enforcement difficulty is big, and retaining wall effect is poor.Therefore, the present invention proposes to strengthen cherry coal rock intensity layered cutting drilling method
And drilling tool.According to job location coal rock layer geological conditions, based on reinforcing cherry coal rock intensity layered cutting drilling method and determine strong
The structure design form for changing cherry coal rock intensity layered cutting drilling tool strengthens drill bit using coal petrography, multiple Coal-Rock Bits are combined and to be formed
New drilling tool construction drill, drill bit is strengthened by the coal petrography mounted on front end and squeezes weak coal and rock, improves borehole circumference
The intensity of weak coal and rock improves the stability of borehole wall, is conducive to prevent drilling collapse hole；Pass through the coal petrography of different-diameter
Drill bit layered cutting removes the coal and rock being reinforced, and advantageously reduces borehole wall caused by due to bit cutting amount is excessive and loses
It is steady to destroy.Using the drilling construction for strengthening the weak coal and rock of cherry coal rock intensity layered cutting drilling tool progress, cherry coal rock " leading portion is realized
The synchronization drilling process system of reinforcing, back segment layered cutting " is conducive to improve cherry coal rock drilling depth and drilling efficiency.
Invention content
The object of the present invention is to provide a kind of reinforcing cherry coal rock intensity layered cutting drilling method and drilling tools, solve cherry coal rock
The difficult technical problem of the easy collapse hole of drilling construction, drilling.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：Strengthen cherry coal rock intensity layered cutting drilling
Method includes the following steps：
1. takes coal sample or rock sample in place to be onstructed, coal petrography solid coefficient is determined by laboratory testf；Measure construction ground
Point coal-bed gas pressurep；
2. is according to job location coal petrography solid coefficientfDetermine that ratio is strengthened in drillingd q；Ratio is strengthened in drillingd qTo be mounted on coal petrography
The coal petrography of chisel edge strengthens drill bit maximum rotating diameterd 1With the Coal-Rock Bits maximum rotating diameter mounted on drilling rod front endd 2's
Ratio；As 0 ＜ of coal petrography solid coefficientfWhen≤0.3, ratio is strengthened in drillingd qIt is designed as 0.5~1；When coal petrography solid coefficient 0.3
＜fWhen≤0.5, ratio is strengthened in drillingd qIt is designed as 0.3~0.8；As 0.5 ＜ of coal petrography solid coefficientfWhen≤0.8, drilling is strengthened
Thand qIt is designed as 0~0.5；As 0.8 ＜ of coal petrography solid coefficientfWhen≤1.2, ratio is strengthened in drillingd qIt is designed as 0~0.3；
3. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting number of plies N；Cut number of plies N
For the number of completion is cut after coal and rock coldworking strengthened at porose area Coal-Rock Bits thickness h to be cut；When coal petrography solid coefficient 0
＜f≤ 0.3, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 4~15；When coal petrography solid coefficient 0
＜f≤ 0.3, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~12；When coal petrography solid coefficient
0.3 ＜f≤ 0.5, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~12；When coal petrography robustness system
Several 0.3 ＜f≤ 0.5, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~10；When coal petrography robustness
0.5 ＜ of coefficientf≤ 0.8, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~10；When coal petrography is firm
0.5 ＜ of property coefficientf≤ 0.8, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~8；When coal petrography is firm
0.8 ＜ of property coefficientf≤ 1.2, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~8；When coal petrography heavily fortified point
0.8 ＜ of solidity coefficientf≤ 1.2, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~6；
4. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting thickness H；Cut thickness H
For the thickness of each layer of cutting of drill bit；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressurepWhen >=0.74 MPa, thickness H
It is designed as the mm of 2 mm~15；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressurep<When 0.74 MPa, thickness H is designed as 3
The mm of mm~15；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, gas pressurepWhen >=0.74 MPa, thickness H be designed as 3 mm~
15 mm；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, gas pressurep<When 0.74 MPa, thickness H is designed as 4 mm~15
mm；As 0.5 ＜ of coal petrography solid coefficientf≤ 0.8, gas pressurepWhen >=0.74 MPa, thickness H is designed as the mm of 4 mm~15；
As 0.5 ＜ of coal petrography solid coefficientf≤ 0.8, gas pressurep<When 0.74 MPa, thickness H is designed as the mm of 5 mm~15；Work as coal
0.8 ＜ of rock solid coefficientf≤ 1.2, gas pressurepWhen >=0.74 MPa, thickness H is designed as the mm of 5 mm~15；When coal petrography heavily fortified point
0.8 ＜ of solidity coefficientf≤ 1.2, gas pressurep<When 0.74 MPa, thickness H is designed as the mm of 5 mm~20；
5. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting axis away from L；Cutting axis is away from L
For the axial distance between the layered cutting starting position twice in succession that drills；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressure
PowerpWhen >=0.74 MPa, cutting axis is designed as the mm of 150 mm~800 away from L；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas
Pressurep<When 0.74 MPa, cutting axis is designed as the mm of 120 mm~700 away from L；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, watt
This pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 130 mm~750 away from L；As 0.3 ＜ of coal petrography solid coefficientf≤
0.5, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 100 mm~650 away from L；As 0.5 ＜ of coal petrography solid coefficientf
≤ 0.8, gas pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 110 mm~700 away from L；When coal petrography solid coefficient 0.5
＜f≤ 0.8, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 80 mm~600 away from L；When coal petrography solid coefficient
0.8 ＜f≤ 1.2, gas pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 90 mm~650 away from L；When coal petrography robustness system
Several 0.8 ＜f≤ 1.2, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 50 mm~550 away from L；
6. drilling rod is mounted on drilling machine by, cherry coal rock intensity layered cutting drilling tool is strengthened in installation, adjusts construction angle, starts
Drilling machine increases drilling machine and is fed power, and coal petrography, which is strengthened drill bit, is pressed into coal and rock, when Coal-Rock Bits touch coal petrography wall, starts and bores
Machine rotation starts brokenly coal petrography and creeps into, and in drilling process, coal petrography reinforcing drill bit does not rotate or rotary speed νq≤5 r/min；
7. according to job location coal rock layer geological conditions, determines spacing between drilling construction diameter, drilling, hole spacing top bottom
Plate distance, dip angle of hole, azimuth, and according to step 1.~6., assess job location coal petrography solid coefficientf, it is based on coal petrography
Solid coefficientfDetermine that ratio is strengthened in drillingd q, it is based on coal petrography solid coefficientf、Gas pressurepDetermine that Coal-Rock Bits cut the number of plies
N, cutting thickness H, cutting axis are away from L, and determine the structure design form for strengthening cherry coal rock intensity layered cutting drilling tool.
Strengthen cherry coal rock intensity layered cutting drilling tool, structure is carried out using cherry coal rock intensity layered cutting drilling method is strengthened
Design, including coal petrography strengthen drill bit, rotation seal joint, Coal-Rock Bits, bit adapter, drilling rod, it is characterised in that：The coal petrography
It is coaxial to strengthen drill bit, rotation seal joint, Coal-Rock Bits, bit adapter, drilling rod, coal petrography reinforcing drill bit is connected to rotatory sealing and connects
One end of head, Coal-Rock Bits are connected to the other end of rotation seal joint, and drilling rod is connect with Coal-Rock Bits；Bit adapter is for connecting
Connect two Coal-Rock Bits.
Strengthen cherry coal rock intensity layered cutting drilling tool, the coal petrography strengthens drill bit by crown, reinforcing body, reinforcing joint group
At crown, reinforcing body surface face are set as smooth and/or groove and/or protrusion, and reinforcing joint is used for and rotation seal joint connects
It connects.
Strengthen cherry coal rock intensity layered cutting drilling tool, the rotation seal joint is by front connector, rotary body and rear joint
Composition, the reinforcing joint that drill bit is strengthened in front connector with coal petrography step by step are connect, and rear joint is connect with Coal-Rock Bits.
Strengthen cherry coal rock intensity layered cutting drilling tool, the rotary body is made of outer ring, rolling element, inner ring；Coal petrography is strong
Change drill bit to connect with rotary body inner ring by front connector, Coal-Rock Bits are connect with rotary body outer ring；Coal petrography strengthens drill bit, coal petrography bores
Head any one end is fixed, and the other end, which applies power, to be rotated.
As the above scheme is adopted, the present invention has the following effects that：
The present invention proposes the drilling method of weak coal and rock " leading portion strengthen, back segment layered cutting ", by the innovation of drill bit structure,
It forms coal petrography and strengthens the novel reinforced cherry coal rock intensity drilling tool that drill bit, rotation seal joint, Coal-Rock Bits, bit adapter combine.
In drilling process, the coal petrography for being mounted on front end strengthens the weak coal and rock of drill bit extruding, improves borehole circumference weakness coal and rock
Intensity improves the stability of borehole wall, is conducive to prevent drilling collapse hole；Coal petrography strengthens the coal and rock that drill bit was strengthened, and leads to
The Coal-Rock Bits layered cutting for crossing different-diameter removes the coal and rock being reinforced, and advantageously reduces due to bit cutting amount is excessive
Caused by borehole wall unstable failure.It is applied using the drilling for strengthening the weak coal and rock of cherry coal rock intensity layered cutting drilling tool progress
Work can effectively reduce the drilling powers such as collapse hole, spray orifice phenomenon to the influence to drilling construction, be conducive to improve weak coal bearing seams
Drilling effect.
Description of the drawings
Fig. 1 is the structural schematic diagram that the embodiment of the present invention one strengthens cherry coal rock intensity layered cutting drilling tool；
Fig. 2 is the sectional view that one coal petrography of the embodiment of the present invention strengthens drill bit, rotation seal joint, Coal-Rock Bits connection structure；
Fig. 3 is the 3-D view of Fig. 2；
Fig. 4 is that cherry coal rock intensity layered cutting schematic diagram is strengthened in drilling；
Fig. 5 is to strengthen cherry coal rock intensity layered cutting drilling tool construction drill schematic diagram；
Fig. 6 is the front view that the embodiment of the present invention two strengthens cherry coal rock intensity layered cutting drilling tool；
Fig. 7 is the front view that the embodiment of the present invention three strengthens cherry coal rock intensity layered cutting drilling tool.
Specific implementation mode
Embodiment one：
As shown in FIG. 1 to 3, the object of the present invention is to provide a kind of reinforcing cherry coal rock intensity layered cutting drilling method and brills
Tool solves the difficult technical problem of the easy collapse hole of cherry coal rock drilling construction, drilling.In order to solve the above technical problems, the present invention is using such as
Lower technical solution：Strengthen cherry coal rock intensity layered cutting drilling method, includes the following steps：
1. takes coal sample or rock sample in place to be onstructed, coal petrography solid coefficient is determined by laboratory testf；Measure construction ground
Point coal-bed gas pressurep；
2. is according to job location coal petrography solid coefficientfDetermine that ratio is strengthened in drillingd q；Ratio is strengthened in drillingd qTo be mounted on coal petrography
The coal petrography of chisel edge strengthens drill bit maximum rotating diameterd 1With the Coal-Rock Bits maximum rotating diameter mounted on drilling rod front endd 2's
Ratio；As 0 ＜ of coal petrography solid coefficientfWhen≤0.3, ratio is strengthened in drillingd qIt is designed as 0.5~1；When coal petrography solid coefficient 0.3
＜fWhen≤0.5, ratio is strengthened in drillingd qIt is designed as 0.3~0.8；As 0.5 ＜ of coal petrography solid coefficientfWhen≤0.8, drilling is strengthened
Thand qIt is designed as 0~0.5；As 0.8 ＜ of coal petrography solid coefficientfWhen≤1.2, ratio is strengthened in drillingd qIt is designed as 0~0.3；
3. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting number of plies N；Cut number of plies N
For the number of completion is cut after coal and rock coldworking strengthened at porose area Coal-Rock Bits thickness h to be cut；When coal petrography solid coefficient 0
＜f≤ 0.3, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 4~15；When coal petrography solid coefficient 0
＜f≤ 0.3, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~12；When coal petrography solid coefficient
0.3 ＜f≤ 0.5, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~12；When coal petrography robustness system
Several 0.3 ＜f≤ 0.5, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~10；When coal petrography robustness
0.5 ＜ of coefficientf≤ 0.8, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~10；When coal petrography is firm
0.5 ＜ of property coefficientf≤ 0.8, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~8；When coal petrography is firm
0.8 ＜ of property coefficientf≤ 1.2, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~8；When coal petrography heavily fortified point
0.8 ＜ of solidity coefficientf≤ 1.2, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~6；
4. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting thickness H；Cut thickness H
For the thickness of each layer of cutting of drill bit；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressurepWhen >=0.74 MPa, thickness H
It is designed as the mm of 2 mm~15；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressurep<When 0.74 MPa, thickness H is designed as 3
The mm of mm~15；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, gas pressurepWhen >=0.74 MPa, thickness H be designed as 3 mm~
15 mm；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, gas pressurep<When 0.74 MPa, thickness H is designed as 4 mm~15
mm；As 0.5 ＜ of coal petrography solid coefficientf≤ 0.8, gas pressurepWhen >=0.74 MPa, thickness H is designed as the mm of 4 mm~15；
As 0.5 ＜ of coal petrography solid coefficientf≤ 0.8, gas pressurep<When 0.74 MPa, thickness H is designed as the mm of 5 mm~15；Work as coal
0.8 ＜ of rock solid coefficientf≤ 1.2, gas pressurepWhen >=0.74 MPa, thickness H is designed as the mm of 5 mm~15；When coal petrography heavily fortified point
0.8 ＜ of solidity coefficientf≤ 1.2, gas pressurep<When 0.74 MPa, thickness H is designed as the mm of 5 mm~20；
5. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting axis away from L；Cutting axis is away from L
For the axial distance between the layered cutting starting position twice in succession that drills；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressure
PowerpWhen >=0.74 MPa, cutting axis is designed as the mm of 150 mm~800 away from L；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas
Pressurep<When 0.74 MPa, cutting axis is designed as the mm of 120 mm~700 away from L；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, watt
This pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 130 mm~750 away from L；As 0.3 ＜ of coal petrography solid coefficientf≤
0.5, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 100 mm~650 away from L；As 0.5 ＜ of coal petrography solid coefficientf
≤ 0.8, gas pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 110 mm~700 away from L；When coal petrography solid coefficient 0.5
＜f≤ 0.8, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 80 mm~600 away from L；When coal petrography solid coefficient
0.8 ＜f≤ 1.2, gas pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 90 mm~650 away from L；When coal petrography robustness system
Several 0.8 ＜f≤ 1.2, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 50 mm~550 away from L；
6. drilling rod is mounted on drilling machine by, cherry coal rock intensity layered cutting drilling tool is strengthened in installation, adjusts construction angle, starts
Drilling machine increases drilling machine and is fed power, and coal petrography, which is strengthened drill bit, is pressed into coal and rock, when Coal-Rock Bits touch coal petrography wall, starts and bores
Machine rotation starts brokenly coal petrography and creeps into, and in drilling process, coal petrography reinforcing drill bit does not rotate or rotary speed νq≤5 r/min；
7. according to job location coal rock layer geological conditions, determines spacing between drilling construction diameter, drilling, hole spacing top bottom
Plate distance, dip angle of hole, azimuth, and according to step 1.~6., assess job location coal petrography solid coefficientf, it is based on coal petrography
Solid coefficientfDetermine that ratio is strengthened in drillingd q, it is based on coal petrography solid coefficientf、Gas pressurepDetermine that Coal-Rock Bits cut the number of plies
N, cutting thickness H, cutting axis are away from L, and determine the structure design form for strengthening cherry coal rock intensity layered cutting drilling tool.
Strengthen cherry coal rock intensity layered cutting drilling tool, structure is carried out using cherry coal rock intensity layered cutting drilling method is strengthened
Design, including coal petrography reinforcing drill bit 1, rotation seal joint 2, Coal-Rock Bits 3, bit adapter 4, drilling rod 5, coal petrography reinforcing drill bit 1,
Rotation seal joint 2, Coal-Rock Bits 3, bit adapter 4, drilling rod 5 are coaxial, and coal petrography strengthens drill bit 1 and is connected to rotation seal joint 2
One end, Coal-Rock Bits 3 are connected to the other end of rotation seal joint 2, and drilling rod 5 is connect with Coal-Rock Bits 3；Bit adapter 4 is used
In two Coal-Rock Bits 3 of connection.Coal petrography is strengthened drill bit 1 and is made of crown 11, reinforcing body 12, reinforcing joint 13, and crown 11 is strengthened
12 surface of body is set as smooth and/or groove and/or protrusion, and reinforcing joint 13 with rotation seal joint 2 for connecting.It rotates close
Sealing joint 2 is made of front connector 21, rotary body 22 and rear joint 23, and the reinforcing joint 13 of drill bit 1 is strengthened in front connector 21 with coal petrography
Connection, rear joint 23 are connect with Coal-Rock Bits 3.Rotary body 22 is made of outer ring 221, rolling element 222, inner ring 223；Coal petrography is strengthened
Drill bit 1 is connect by front connector 21 with rotary body inner ring 223, and Coal-Rock Bits 3 are connect with 22 outer ring 221 of rotary body；Coal petrography is strengthened
Drill bit 1,3 any one end of Coal-Rock Bits are fixed, and the other end, which applies power, to be rotated.
The embodiment of the present invention one is described below and strengthens cherry coal rock intensity layered cutting drilling tool boring principle：
The present invention determines coal petrography solid coefficient according to job location coal rock layer geological conditions, by laboratory testf, it is based on coal
Rock solid coefficientfDetermine that ratio is strengthened in drillingd q, it is based on coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting lay
Number N, cutting thickness H, cutting axis determine the structure design form for strengthening cherry coal rock intensity layered cutting drilling tool away from L.Such as Fig. 4
Shown, ratio is strengthened in drillingd q=d 1/d 2, it is 2 layers that Coal-Rock Bits, which cut the number of plies, and first layer cutting layer thickness is H1, second layer cutting
Layer thickness is H2, cutting axis is away from for L.As shown in figure 5, drilling construction is divided into stiffened region, 1 layer of cutting region, 2 layers of cutting region.By force
Change area：In drilling process, coal petrography strengthens drill bit 1 and is pressed into coal and rock by drilling machine propulsive force, since coal petrography strengthens drill bit 1 and coal petrography
Frictional force between body ensure that coal petrography is strengthened drill bit 1 and do not rotated or rotary speed ν by rotation seal joint 2q≤5 r/
Min extends forward with drilling, and coal petrography strengthens drill bit 1 and constantly squeezes weak coal and rock, makes the steady of borehole circumference weakness coal and rock
It is qualitative to be improved.1 layer of cutting region：As shown in Figure 1, the smaller Coal-Rock Bits 31 of diameter are mounted on after coal petrography strengthens drill bit 1
End, drilling machine holding drill pipe 5 drive 1 layer of cutting region after the reinforcing of 31 rotary cutting of Coal-Rock Bits.2 layers of cutting region：As shown in Figure 1,
The Coal-Rock Bits 32 being relatively large in diameter are mounted on the rear end of Coal-Rock Bits 31 by bit adapter 4, and drilling machine holding drill pipe 5 drives coal petrography
2 layers of cutting region after the reinforcing of 32 rotary cutting of drill bit.Drilling after reinforcing is subjected to layered cutting construction, is advantageously reduced because boring
Head cutting output it is excessive and caused by borehole wall unstable failure.Weak coal is carried out using cherry coal rock intensity layered cutting drilling tool is strengthened
The drilling construction of rock mass can effectively reduce the drilling powers such as collapse hole, spray orifice phenomenon to the influence to drilling construction, be conducive to improve
The drilling effect of weak coal bearing seams.
Embodiment two：As shown in fig. 6, different from embodiment one is, strengthens cherry coal rock intensity layered cutting drilling tool and set
The Coal-Rock Bits 3 of 3 different-diameters are counted, it is 3 layers that Coal-Rock Bits, which cut the number of plies,.
Embodiment two：As shown in fig. 7, different from embodiment one is, strengthens cherry coal rock intensity layered cutting drilling tool and set
The Coal-Rock Bits 3 of 4 different-diameters are counted, it is 4 layers that Coal-Rock Bits, which cut the number of plies,.
Claims (5)
1. strengthening cherry coal rock intensity layered cutting drilling method, it is characterised in that：Include the following steps：
1. takes coal sample or rock sample in place to be onstructed, coal petrography solid coefficient is determined by laboratory testf；Measure construction ground
Point coal-bed gas pressurep；
2. is according to job location coal petrography solid coefficientfDetermine that ratio is strengthened in drillingd q；Ratio is strengthened in drillingd qIt is bored to be mounted on coal petrography
The coal petrography of head front end strengthens drill bit maximum rotating diameterd 1With the Coal-Rock Bits maximum rotating diameter mounted on drilling rod front endd 2Ratio
Value；As 0 ＜ of coal petrography solid coefficientfWhen≤0.3, ratio is strengthened in drillingd qIt is designed as 0.5~1；As 0.3 ＜ of coal petrography solid coefficientfWhen≤0.5, ratio is strengthened in drillingd qIt is designed as 0.3~0.8；As 0.5 ＜ of coal petrography solid coefficientfWhen≤0.8, ratio is strengthened in drillingd q
It is designed as 0~0.5；As 0.8 ＜ of coal petrography solid coefficientfWhen≤1.2, ratio is strengthened in drillingd qIt is designed as 0~0.3；
3. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting number of plies N；Cut number of plies N
For the number of completion is cut after coal and rock coldworking strengthened at porose area Coal-Rock Bits thickness h to be cut；When coal petrography solid coefficient 0
＜f≤ 0.3, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 4~15；When coal petrography solid coefficient 0
＜f≤ 0.3, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~12；When coal petrography solid coefficient
0.3 ＜f≤ 0.5, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~12；When coal petrography robustness system
Several 0.3 ＜f≤ 0.5, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~10；When coal petrography robustness
0.5 ＜ of coefficientf≤ 0.8, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 3~10；When coal petrography is firm
0.5 ＜ of property coefficientf≤ 0.8, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~8；When coal petrography is firm
0.8 ＜ of property coefficientf≤ 1.2, gas pressurepWhen >=0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~8；When coal petrography heavily fortified point
0.8 ＜ of solidity coefficientf≤ 1.2, gas pressurep<When 0.74 MPa, Coal-Rock Bits cutting number of plies N is designed as 2~6；
4. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting thickness H；Cut thickness H
For the thickness of each layer of cutting of drill bit；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressurepWhen >=0.74 MPa, thickness H
It is designed as the mm of 2 mm~15；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressurep<When 0.74 MPa, thickness H is designed as 3
The mm of mm~15；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, gas pressurepWhen >=0.74 MPa, thickness H be designed as 3 mm~
15 mm；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, gas pressurep<When 0.74 MPa, thickness H is designed as 4 mm~15
mm；As 0.5 ＜ of coal petrography solid coefficientf≤ 0.8, gas pressurepWhen >=0.74 MPa, thickness H is designed as the mm of 4 mm~15；
As 0.5 ＜ of coal petrography solid coefficientf≤ 0.8, gas pressurep<When 0.74 MPa, thickness H is designed as the mm of 5 mm~15；Work as coal
0.8 ＜ of rock solid coefficientf≤ 1.2, gas pressurepWhen >=0.74 MPa, thickness H is designed as the mm of 5 mm~15；When coal petrography heavily fortified point
0.8 ＜ of solidity coefficientf≤ 1.2, gas pressurep<When 0.74 MPa, thickness H is designed as the mm of 5 mm~20；
5. is according to job location coal petrography solid coefficientf、Gas pressurepDetermine Coal-Rock Bits cutting axis away from L；Cutting axis is away from L
For the axial distance between the layered cutting starting position twice in succession that drills；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas pressure
PowerpWhen >=0.74 MPa, cutting axis is designed as the mm of 150 mm~800 away from L；As 0 ＜ of coal petrography solid coefficientf≤ 0.3, gas
Pressurep<When 0.74 MPa, cutting axis is designed as the mm of 120 mm~700 away from L；As 0.3 ＜ of coal petrography solid coefficientf≤ 0.5, watt
This pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 130 mm~750 away from L；As 0.3 ＜ of coal petrography solid coefficientf≤
0.5, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 100 mm~650 away from L；As 0.5 ＜ of coal petrography solid coefficientf
≤ 0.8, gas pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 110 mm~700 away from L；When coal petrography solid coefficient 0.5
＜f≤ 0.8, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 80 mm~600 away from L；When coal petrography solid coefficient
0.8 ＜f≤ 1.2, gas pressurepWhen >=0.74 MPa, cutting axis is designed as the mm of 90 mm~650 away from L；When coal petrography robustness system
Several 0.8 ＜f≤ 1.2, gas pressurep<When 0.74 MPa, cutting axis is designed as the mm of 50 mm~550 away from L；
6. drilling rod is mounted on drilling machine by, cherry coal rock intensity layered cutting drilling tool is strengthened in installation, adjusts construction angle, starts
Drilling machine increases drilling machine and is fed power, and coal petrography, which is strengthened drill bit, is pressed into coal and rock, when Coal-Rock Bits touch coal petrography wall, starts and bores
Machine rotation starts brokenly coal petrography and creeps into, and in drilling process, coal petrography reinforcing drill bit does not rotate or rotary speed νq≤5 r/min；
7. according to job location coal rock layer geological conditions, determines spacing between drilling construction diameter, drilling, hole spacing top bottom
Plate distance, dip angle of hole, azimuth, and according to step 1.~6., assess job location coal petrography solid coefficientf, it is based on coal petrography
Solid coefficientfDetermine that ratio is strengthened in drillingd q, it is based on coal petrography solid coefficientf、Gas pressurepDetermine that Coal-Rock Bits cut the number of plies
N, cutting thickness H, cutting axis are away from L, and determine the structure design form for strengthening cherry coal rock intensity layered cutting drilling tool.
2. strengthening cherry coal rock intensity layered cutting drilling tool, strengthen cherry coal rock intensity layered cutting using as described in claim 1
Drilling method carries out structure design, including coal petrography strengthens drill bit, rotation seal joint, Coal-Rock Bits, bit adapter, drilling rod,
It is characterized in that：The coal petrography reinforcing drill bit, rotation seal joint, Coal-Rock Bits, bit adapter, drilling rod are coaxial, and coal petrography, which is strengthened, to be bored
Head is connected to one end of rotation seal joint, and Coal-Rock Bits are connected to the other end of rotation seal joint, drilling rod and Coal-Rock Bits
Connection；Bit adapter is for connecting two Coal-Rock Bits.
3. reinforcing cherry coal rock intensity layered cutting drilling tool according to claim 2, it is characterised in that：The coal petrography is strengthened
Drill bit is made of crown, reinforcing body, reinforcing joint, and crown, reinforcing body surface face are set as smooth and/or groove and/or protrusion, by force
Change connector for being connect with rotation seal joint.
4. reinforcing cherry coal rock intensity layered cutting drilling tool according to claim 2 or 3, it is characterised in that：The rotation
Seal nipple is made of front connector, rotary body and rear joint, and the reinforcing joint that drill bit is strengthened in front connector with coal petrography step by step is connect, after
Connector is connect with Coal-Rock Bits.
5. reinforcing cherry coal rock intensity layered cutting drilling tool according to claim 4, it is characterised in that：The rotary body by
Outer ring, rolling element, inner ring composition；Coal petrography is strengthened drill bit and is connect with rotary body inner ring by front connector, Coal-Rock Bits and rotary body
Outer ring connects；Coal petrography strengthens drill bit, Coal-Rock Bits any one end is fixed, and the other end, which applies power, to be rotated.
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| CN109472101A (en) * | 2018-11-21 | 2019-03-15 | 河南理工大学 | Deep-well cherry coal rock flow body deslagging drilling method |
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Effective date of registration: 20230920 Address after: 454000 No. 2001 Century Avenue, hi tech Zone, Henan, Jiaozuo Patentee after: HENAN POLYTECHNIC University Patentee after: Shandong Banghong Zhongchuang Intelligent Equipment Co.,Ltd. Address before: 454000 School of energy science and engineering, Henan University of technology, No. 2001, Shiji Road, high tech Zone, Jiaozuo City, Henan Province Patentee before: HENAN POLYTECHNIC University |