CN107201892A - Layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique method - Google Patents
Layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique method Download PDFInfo
- Publication number
- CN107201892A CN107201892A CN201710618951.9A CN201710618951A CN107201892A CN 107201892 A CN107201892 A CN 107201892A CN 201710618951 A CN201710618951 A CN 201710618951A CN 107201892 A CN107201892 A CN 107201892A
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- slotted liner
- drilling
- liner technique
- hydraulic slotted
- water
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- 238000000034 method Methods 0.000 title claims abstract description 77
- 238000005553 drilling Methods 0.000 title claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000003245 coal Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000703 anti-shock Effects 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000002224 dissection Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 8
- 238000005457 optimization Methods 0.000 description 8
- 101100194817 Caenorhabditis elegans rig-6 gene Proteins 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique method, layer-through drilling hydraulic slotted liner technique device includes water tank, water inlet pipe, water pump, outlet pipe, rotation water tail, rig, drilling rod and hydraulic slotted liner technique drill bit；One end of the water inlet pipe is passed through in the water tank, and the other end connects the water inlet of the water pump；One end of the outlet pipe connects the delivery port of the water pump, and the other end connects one end of the drilling rod by the rotation water tail, and the other end of the drilling rod connects the hydraulic slotted liner technique drill bit；The drilling rod is located on the rig, is driven and rotated by the rig；The outlet pipe is provided with pressure gauge, and the outlet pipe between the pressure gauge and the delivery port of the water pump is provided with pressure regulator valve.The advantage of the invention is that：Using the dissection of high-pressure water jet, coal body exposed area in reaming, increase hole is carried out to drilling coal section, crack is manufactured, gas permeability of coal seam is improved, so as to improve gas pumping effect.
Description
Technical field
The present invention relates to coal bed drilling technical field, more particularly to a kind of layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique
Method.
Background technology
The weak mining area of coal body gas permeability need to carry out layer-through drilling, coal in the layer-through drilling pore constructed using common drilling process
Body exposure is smaller, influences gas pumping effect.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of layer-through drilling waterpower for improving gas pumping effect and cut
Stitch device and hydraulic slotted liner technique method.
The present invention is to solve above-mentioned technical problem by the following technical programs：Layer-through drilling hydraulic slotted liner technique device, including
Water tank (1), water inlet pipe (2), water pump (3), outlet pipe (4), rotation water tail (5), rig (6), drilling rod (7) and hydraulic slotted liner technique drill bit
(8)；One end of the water inlet pipe (2) is passed through in the water tank (1), and the other end connects the water inlet of the water pump (3)；It is described go out
One end of water pipe (4) connects the delivery port of the water pump (3), and the other end connects the drilling rod (7) by the rotation water tail (5)
One end, the other end of the drilling rod (7) connects the hydraulic slotted liner technique drill bit (8)；The drilling rod (7) is located at the rig (6)
On, driven and rotated by the rig (6)；The outlet pipe (4) is provided with pressure gauge (9), the pressure gauge (9) and the water
Outlet pipe (4) between the delivery port of pump (3) is provided with pressure regulator valve (10).
As the technical scheme of optimization, the hydraulic slotted liner technique device also includes relief tube (11) and pressure-relief valve (12), described to unload
One end of pressure pipe (11) is passed through in the water tank (1), the other end by threeway (13) be connected to the pressure regulator valve (10) with it is described
Rotate on the outlet pipe (4) between water tail (5), the pressure gauge (9) be located at the threeway (13) and the rotation water tail (5) it
Between.When occurring the failures such as blocking at hydraulic slotted liner technique drill bit, hydraulic pressure can be significantly raised in outlet pipe, when hydraulic pressure is increased to certain value
When, the water outlet of the water pump reflow tank from relief tube can be made by opening pressure-relief valve, prevent hydraulic pressure is too high from causing the accident.
As the technical scheme of optimization, the water pump (3) uses D2B200/31.5 type emulsion pumps.
As the technical scheme of optimization, each water pipe uses a diameter of 25mm 40MPa high-pressure water pipes.
As the technical scheme of optimization, the rotation water tail (5) uses model PCD63P35 high-pressure rotary water tail.
As the technical scheme of optimization, the drilling rod (7) uses a diameter of 73mm rib drill stem.
As the technical scheme of optimization, the pressure gauge (9) uses range for 0~40MPa anti-shock pressure meter.
As the technical scheme of optimization, the hydraulic slotted liner technique drill bit (8) includes main body (81) and high pressure nozzle (82)；It is described
Main body (81) is hollow cylinder, and cylindrical one end closing, the other end is connected through a screw thread the drilling rod (7)；The high pressure
Nozzle (82) is located at the side of the main body (81).
As the technical scheme of optimization, the hydraulic slotted liner technique drill bit (8) also includes neck (83), and the neck (83) is located at
The side of the main body (81), the neck (83) is the rectangular recess for being adapted to pressing tongs shape.It is convenient to use pressing tongs by waterpower
Seam cutting drill bit is unloaded from drilling rod, more laborsaving.
Using the hydraulic slotted liner technique method of above-mentioned layer-through drilling hydraulic slotted liner technique device, comprise the following steps：First using general
Logical drilling process to hole depth is designed, then stretches into the hydraulic slotted liner technique drill bit (8) hole drill in drilling, starts the water pump
(3) pressure regulator valve (10), is controlled to adjust hydraulic pressure to 8~12MPa, it is after pressure stabilisation, then hydraulic pressure is adjusted to 15~20MPa,
It is after pressure stabilisation, pull the drilling rod (7) to carry out hydraulic slotted liner technique back and forth, it is 500~700mm that stroke is pulled every time, observation is bored
Hole aperture is produced coal situation, until aperture is continued deeper into after gushing out without ickings, is closed after the hydraulic slotted liner technique for completing drilling coal section described
Water pump (3).
The advantage of the invention is that：It is simple in construction, it is easily installed, using the dissection of high-pressure water jet, to drilling coal
Coal body exposed area in Duan Jinhang reamings, increase hole, manufactures crack, gas permeability of coal seam is improved, so as to improve gas pumping effect.
Brief description of the drawings
Fig. 1 is the structural representation of layer-through drilling hydraulic slotted liner technique device of the present invention.
Fig. 2 is the structural representation of hydraulic slotted liner technique drill bit of the present invention.
Embodiment
As shown in Figure 1-2, layer-through drilling hydraulic slotted liner technique device, including water tank 1, water inlet pipe 2, water pump 3, outlet pipe 4, rotation
Water tail 5, rig 6, drilling rod 7, hydraulic slotted liner technique drill bit 8, pressure gauge 9, pressure regulator valve 10, relief tube 11, pressure-relief valve 12, threeway 13.
One end of water inlet pipe 2 is passed through in water tank 1, and the other end connects the water inlet of water pump 3；One end connection water of outlet pipe 4
The delivery port of pump 3, the other end is by rotating one end of the jointed rod 7 of water tail 5, the other end connection hydraulic slotted liner technique drill bit of drilling rod 7
8；Drilling rod 7 is located on rig 6, is driven and rotated by rig 6, and rotation water tail 5 is used for the drilling rod 7 and static outlet pipe of rotation
4 link together；Outlet pipe 4 is provided with pressure gauge 9, and the outlet pipe 4 between pressure gauge 9 and the delivery port of water pump 3 is provided with tune
Pressure valve 10.
One end of relief tube 11 is passed through in water tank 1, the other end by threeway 13 be connected to pressure regulator valve 10 and rotation water tail 5 it
Between outlet pipe 4 on, pressure gauge 9 is located between threeway 13 and rotation water tail 5.
Water pump 3 uses D2B200/31.5 type emulsion pumps.
Water inlet pipe 2, outlet pipe 4 and relief tube 11 use a diameter of 25mm 40MPa high-pressure water pipes.
Rotate high-pressure rotary water tail of the water tail 5 using model PCD63P35.
Rig 6 uses model ZDY4000s rig.
Drilling rod 7 uses a diameter of 73mm rib drill stem.
Pressure gauge 9 uses range for 0~40MPa anti-shock pressure meter.
Hydraulic slotted liner technique drill bit 8 includes main body 81 and high pressure nozzle 82；Main body 81 is hollow cylinder, a cylindrical end seal
Close, the other end is connected through a screw thread drilling rod 7；High pressure nozzle 82 is located at the side of main body 81, and the aperture of its hole for water spraying is 1.5mm.
Neck 83 is located at the side of main body 81, and neck 83 is the rectangular recess for being adapted to pressing tongs shape.
A kind of hydraulic slotted liner technique method using above-mentioned layer-through drilling hydraulic slotted liner technique device, comprises the following steps：Adopt first
With common drilling process by hole drill to hole depth is designed, then hydraulic slotted liner technique drill bit 8 is stretched into drilling, start water pump 3, control adjust
Pressure valve 10 adjusts hydraulic pressure to 8~12MPa, after pressure stabilisation, then adjusts hydraulic pressure to 15~20MPa, after pressure stabilisation, back and forth
Drilling rod 7 is pulled to carry out hydraulic slotted liner technique, it is 500~700mm that stroke is pulled every time, and observation drilling orifice produces coal situation, until aperture
Continued deeper into after gushing out without ickings, 3 are switched off the pump after the hydraulic slotted liner technique for completing drilling coal section.
Carry out that measure must be taken to keep unimpeded during hydraulic slotted liner technique drilling：1. common drilling process drilling construction is used
To strengthen the cleaning bottom of hole that drills after in place, in trip-out process；When 2. descending hydraulic slotted liner technique drill bit 8, band to bore under water, prevent plug-hole；3. water
Power seam cutting drill bit 8 in place after, slowly to lift the hydraulic pressure of water pump 3；4. during slot, it should be noted that gently press slow-speed.
Want layout points bell phone in scene, it is ensured that can effectively be contacted between rig 6 and water pump 3, timely termination of pumping is opened
Pump, adjusts discharge pressure.
Strengthen high-pressure system management, prevent pressure duct from hurting sb.'s feelings, each joint of high-voltage tube need to carry out secondary protection, during slot
The operating desk of rig 6 keeps more than 5 meters safe spacings with aperture, adds after release and unloads chi.
Totally 95 drillings are without hydraulic slotted liner technique for contrived experiment 3# drill sites, and cut by totally 95 drilling progress waterpower for 4#, 5# drill site
Seam, arranges coal output by hydraulic slotted liner technique and gas pumping scale is analyzed, summarize hydraulic slotted liner technique effect.
Calculation is measured by discharging coal, non-slot drilling average diameter is 113mm, and the average exposed area of drilling rib is
1.7m2, after hydraulic slotted liner technique, drilling average diameter is 370mm, and the average exposed area of drilling rib is 5.7m2.Hydraulic slotted liner technique drills
The average exposed area drilled than non-slot improves 3.35 times, adds hole pumping and mining negative pressure contact area, is conducive to gas
Extraction.
In construction 13 days, the peak value of hundred hole extraction scales of non-slot drilling reaches 0.6m3/ min, later with conjunction stubble extraction
The increase of drilling hole amount, hundred hole extraction scales maintain 0.2~0.5m3Between/min, after hydraulic slotted liner technique, hundred hole extraction scales
Peak value reaches 0.8m3/ min, later with the increase for closing stubble extraction borehole quantity, hundred hole extraction scales maintain 0.5~0.7m3/
Between min.Through Comprehensive Correlation, hydraulic slotted liner technique drilling improves 150% than the hundred hole extraction scales that non-slot drills.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Any modifications, equivalent substitutions and improvements made within principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of layer-through drilling hydraulic slotted liner technique device, it is characterised in that：Including water tank (1), water inlet pipe (2), water pump (3), water outlet
Manage (4), rotation water tail (5), rig (6), drilling rod (7) and hydraulic slotted liner technique drill bit (8)；One end of the water inlet pipe (2) is passed through institute
State in water tank (1), the other end connects the water inlet of the water pump (3)；One end of the outlet pipe (4) connects the water pump (3)
Delivery port, the other end passes through one end that the rotation water tail (5) connects the drilling rod (7), and the other end of the drilling rod (7) connects
Connect the hydraulic slotted liner technique drill bit (8)；The drilling rod (7) is located on the rig (6), is driven and rotated by the rig (6)；Institute
Outlet pipe (4) is stated provided with pressure gauge (9), the outlet pipe (4) between the pressure gauge (9) and the delivery port of the water pump (3)
It is provided with pressure regulator valve (10).
2. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：The hydraulic slotted liner technique device also includes unloading
Pressure pipe (11) and pressure-relief valve (12), one end of the relief tube (11) are passed through in the water tank (1), and the other end passes through threeway (13)
It is connected on the outlet pipe (4) between the pressure regulator valve (10) and the rotation water tail (5), the pressure gauge (9) is located at described
Between threeway (13) and the rotation water tail (5).
3. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：The water pump (3) uses D2B200/
31.5 type emulsion pump.
4. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：Each water pipe uses a diameter of 25mm
40MPa high-pressure water pipes.
5. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：The rotation water tail (5) uses type
Number be PCD63P35 high-pressure rotary water tail.
6. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：The drilling rod (7) is using a diameter of
73mm rib drill stem.
7. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：The pressure gauge (9) uses range
For 0~40MPa anti-shock pressure meter.
8. layer-through drilling hydraulic slotted liner technique device as claimed in claim 1, it is characterised in that：Hydraulic slotted liner technique drill bit (8) bag
Include main body (81) and high pressure nozzle (82)；The main body (81) is hollow cylinder, and cylindrical one end closing, the other end passes through
It is threadedly coupled the drilling rod (7)；The high pressure nozzle (82) is located at the side of the main body (81).
9. layer-through drilling hydraulic slotted liner technique device as claimed in claim 8, it is characterised in that：The hydraulic slotted liner technique drill bit (8) is also
Including neck (83), the neck (83) is located at the side of the main body (81), and the neck (83) is to be adapted to pressing tongs shape
Rectangular recess.
10. a kind of hydraulic slotted liner technique method of layer-through drilling hydraulic slotted liner technique device using as described in claim any one of 1-9, its
It is characterised by, comprises the following steps：First using common drilling process by hole drill to hole depth is designed, then by the hydraulic slotted liner technique
Drill bit (8) is stretched into drilling, starts the water pump (3), is controlled the pressure regulator valve (10) to adjust hydraulic pressure to 8~12MPa, is treated pressure
After stable, then hydraulic pressure is adjusted to 15~20MPa, it is after pressure stabilisation, pull the drilling rod (7) to carry out hydraulic slotted liner technique back and forth, often
Secondary pulling stroke is 500~700mm, and observation drilling orifice produces coal situation, until aperture is continued deeper into after gushing out without ickings, is completed
The water pump (3) is closed after the hydraulic slotted liner technique of drilling coal section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710618951.9A CN107201892A (en) | 2017-07-26 | 2017-07-26 | Layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710618951.9A CN107201892A (en) | 2017-07-26 | 2017-07-26 | Layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique method |
Publications (1)
| Publication Number | Publication Date |
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| CN107201892A true CN107201892A (en) | 2017-09-26 |
Family
ID=59911528
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710618951.9A Pending CN107201892A (en) | 2017-07-26 | 2017-07-26 | Layer-through drilling hydraulic slotted liner technique device and hydraulic slotted liner technique method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042792A (en) * | 2020-01-13 | 2020-04-21 | 煤科集团沈阳研究院有限公司 | Deep drilling longitudinal joint cutting device and method |
| CN111335861A (en) * | 2020-03-20 | 2020-06-26 | 中煤科工集团重庆研究院有限公司 | Safety protection method for ultrahigh-pressure hydraulic slotting device |
| CN114183116A (en) * | 2021-10-15 | 2022-03-15 | 中国矿业大学(北京) | Rod body self-contained pressure stabilizing pump tool bit rotatable ultrahigh pressure water jet directional joint cutting pressure relief method |
| CN114893126A (en) * | 2022-05-31 | 2022-08-12 | 中煤科工集团重庆研究院有限公司 | Drilling method suitable for hydraulic slotting of cross-layer drilling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042792A (en) * | 2020-01-13 | 2020-04-21 | 煤科集团沈阳研究院有限公司 | Deep drilling longitudinal joint cutting device and method |
| CN111042792B (en) * | 2020-01-13 | 2021-01-15 | 煤科集团沈阳研究院有限公司 | Deep drilling longitudinal joint cutting device and method |
| CN111335861A (en) * | 2020-03-20 | 2020-06-26 | 中煤科工集团重庆研究院有限公司 | Safety protection method for ultrahigh-pressure hydraulic slotting device |
| CN114183116A (en) * | 2021-10-15 | 2022-03-15 | 中国矿业大学(北京) | Rod body self-contained pressure stabilizing pump tool bit rotatable ultrahigh pressure water jet directional joint cutting pressure relief method |
| CN114183116B (en) * | 2021-10-15 | 2022-11-18 | 中国矿业大学(北京) | Rod body self-contained pressure stabilizing pump tool bit rotatable ultrahigh pressure water jet directional joint cutting pressure relief method |
| CN114893126A (en) * | 2022-05-31 | 2022-08-12 | 中煤科工集团重庆研究院有限公司 | Drilling method suitable for hydraulic slotting of cross-layer drilling |
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