CN103993901B - A kind of projecting coal bed drilling waterpower is handled up anti-reflection method - Google Patents
A kind of projecting coal bed drilling waterpower is handled up anti-reflection method Download PDFInfo
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- CN103993901B CN103993901B CN201410172938.1A CN201410172938A CN103993901B CN 103993901 B CN103993901 B CN 103993901B CN 201410172938 A CN201410172938 A CN 201410172938A CN 103993901 B CN103993901 B CN 103993901B
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- pressure
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- sequencing valve
- discharge opeing
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Abstract
A kind of projecting coal bed drilling waterpower is handled up anti-reflection method.Handled up by waterpower, form flow at high speed water body in drilling surrounding medium, carry out fine coal and gas, improve gas drainage under suction effect.After the completion of drilling construction, installation supplies drain line, makes drilling surrounding medium fracturing using initial liquid supply pressure feed flow.Then close liquid-supplying system, open drainage system, minimum and maximum critical pressure is determined according to coal water slurry and gas density, maximum critical pressure is arranged to feed flow sequencing valve and closes pressure and the program-controlled valve opening pressure of discharge opeing, minimum critical pressure is arranged to feed flow sequencing valve Opening pressure and discharge opeing sequencing valve closes pressure, control the opening and closing of two sequencing valves in real time by digital pressure gauge numerical value, realize the program-controlled waterpower throughput operation of drilling surrounding medium.When coal water slurry and gas density are preferably minimized setting value, maximum critical pressure is improved, re-starts waterpower throughput operation, untill improving maximum critical pressure and cannot substantially change coal water slurry and gas density.
Description
Technical field
The present invention relates to a kind of projecting coal bed drilling waterpower handle up anti-reflection method, especially weak seam drilling it is anti-reflection,
Extinction, the method for subtracting dirt.
Background technology
With the raising of coal mining mechanization degree, the gas and coal dust problem in coal production are more and more prominent, coal
It is that a kind of serious natural calamity, coal dust can also explode when reaching a certain concentration in coal production with Gas Outburst, and
And coal miner can be caused to suffer from pneumoconiosis, serious threat is brought to the safety and health of coal miner.Therefore, how coal is solved
In ore deposit production coal and gas prominent and coal dust it is exceeded be important topic in Safety of Coal Mine Production.
For such phenomenon, coal industry takes following control measure：（1）Gas Drainage from Virgin Coal Seams, i.e., by negative pressure extraction
Gas in coal seam is discharged, reduces gas pressure and gas bearing capacity, prevents coal and gas prominent accident from occurring；（2）Hydraulic fracturing,
I.e. to coal seam high pressure water injection, force coal seam to produce crack, increase gas permeability, then induce gas in coal seam to discharge, reduce coal seam
Gas pressure and gas bearing capacity, prevent the generation of coal and gas prominent or bump.Play dust-proof, anti-spontaneous fire again at the same time
Effect.
At present, coal-bed flooding achieves a degree of effect in coal and gas prominent accident is prevented, but the technology
There are still certain blindness.When projecting coal bed drilling hydrofracturing is anti-reflection under carrying out large ground pressure, when water body pressure
After power reduces, the crack gap of opening re-closes under crustal stress effect, is unable to maintain that the open configuration in crack gap, because
This, it is difficult to obtain anti-reflection effect.In the presence of crack gap is maintained with materials such as sand grains, due to soft coal body structural strength
It is low, the effect of sand grains concentrated stress can not be subjected to and occur to destroy adjustment, finally or satisfied antireflective effect cannot be obtained.
The content of the invention
Projecting coal bed drilling waterpower of the invention a kind of is handled up anti-reflection method, it is intended to for problem present in prior art,
With the thinking cleaned fine coal in coal body, retain the higher lump coal of intensity in coal body, there is provided a kind of method is simple, easy to operate, control
Property is good, securely and reliably, the good coal and gas outburst prominent controlling of effect and subtracts the integrated method of dirt.
The object of the present invention is achieved like this：A kind of projecting coal bed drilling waterpower is handled up anti-reflection method, including is drilled, sealed
Hole, the program such as be pressurized, handle up.The device that realizing this method needs includes：Topping-up pump, positive displacement pump, high pressure aluminium-plastic pipe, sequencing valve,
Triple valve, pressure gauge, hole packer, high-pressure rubber pipe with holes.
The high-pressure rubber pipe with holes is positioned in the drilling for reaching projected depth, and aperture section uses hole packer sealing of hole, prevents
High pressure water or gas are flowed out from the gap between high-pressure rubber pipe with holes and hole wall.The aperture size of the high-pressure rubber pipe with holes and
Away from can be adjusted according to fine coal flushing effect.
The topping-up pump passes through high pressure by high pressure aluminium-plastic pipe, sequencing valve, triple valve to high-pressure rubber pipe feed flow, highly pressurised liquid
Sebific duct aperture enters drilling surrounding medium, increases raw coal crack by high pressure or expands coal body preexisting crack.
The positive displacement pump is arranged by high pressure aluminium-plastic pipe, sequencing valve, triple valve, high-pressure rubber pipe aperture from drilling surrounding medium
Liquid.
The positive displacement pump is coal slime pump.
The feed flow high pressure aluminium-plastic pipe, high-pressure rubber pipe with holes can bear system maximum pressure and minimum sub-atmospheric pressure.
This method by clean the fine coal in coal body increase drilling surrounding medium in permeability, drill surrounding medium in
Water body is spent by high-pressure rubber pipe aperture seepage flow speed per hour into high-pressure rubber pipe to be then unfavorable for carrying out fine coal slowly.High pressure water flows automatically
When going out, inside and outside head difference decay is very fast, and water volume flow rate is also decayed comparatively fast, is unfavorable for the carrying of fine coal；In addition, water body is unidirectional always
The seepage flow out of high-pressure rubber pipe extroversion high-pressure rubber pipe, will cause the closure of high-pressure rubber pipe aperture, is unfavorable for the outflow of follow-up fine coal.Cause
This, is alternately opened, the method that topping-up pump and positive displacement pump work alternatively, makes aperture is inside and outside to keep larger head using two sequencing valves
Difference, flow at high speed state is maintained by water body, and is conducive to the carrying discharge of fine coal at a high speed, and since water body is from high-pressure rubber pipe
Aperture alternately flows in and out, then will not block aperture for a long time.
Digital pressure gauge is installed in high pressure aluminium-plastic pipe, digital pressure gauge numeral can be used for control feed flow sequencing valve and discharge opeing
Sequencing valve；When high pressure plastic-aluminum overpressure reaches relatively low critical value, open feed flow sequencing valve and close discharge opeing sequencing valve, by supplying
Liquid pump to supply refrigerant；When high pressure plastic-aluminum overpressure reaches higher critical value, open discharge opeing sequencing valve and close feed flow sequencing valve, by
Positive displacement pump discharge opeing.So move in circles repeatedly, when discharge concentration of coal-water is relatively low, and gas density is relatively low, dismountable drilling
Outer device, is connected to gas exhaust system by high-pressure rubber pipe in drilling, carries out the long-term extraction of gas.
Extraction coal water slurry and high concentration gas are discharged by pipe special.
For drilling, feed flow water supplying pump and discharge opeing pump drainage, exactly gulp down water and gushing water, by gulping down water repeatedly and dashing forward
Water, discharges pulverized coal particle in drilling surrounding medium, leaves the higher lump coal of intensity, can be easier to retain can be used as gas porous flow
The crack of passage, improves coal gas extraction efficiency.
Brief description of the drawings
A kind of projecting coal bed waterpower that drills that Fig. 1 is the present invention is handled up anti-reflection method schematic diagram.
In figure:1 is solution feed pump；2 be feed flow high pressure aluminium-plastic pipe；3 be feed flow sequencing valve；4 be triple valve；5 be positive displacement pump；
6 be discharge opeing high pressure aluminium-plastic pipe；7 be discharge opeing sequencing valve；8 be for discharge opeing high pressure aluminium-plastic pipe；9 be digital pressure gauge；10 be height with holes
Moulding pipe；11 be hole packer；12 be drilling；13 be high-pressure rubber pipe aperture with holes；14 be coal body.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Handle up anti-reflection method the present invention provides a kind of projecting coal bed drilling waterpower.
As shown in Figure 1, the present invention's comprises the following steps that.
（1）Drilling construction takes out drilling rod to after projected depth, and high-pressure rubber pipe 10 with holes is put into drilling 12, and in hole
Installation hole packer 11, prevents high pressure water from being flowed out from the gap between high-pressure rubber pipe 10 with holes and hole wall near mouthful.
（2）Connection drill outer device including solution feed pump 1, positive displacement pump 5, feed flow sequencing valve 3, discharge opeing sequencing valve 7, triple valve 4,
Digital pressure gauge 9, feed flow high pressure aluminium-plastic pipe 2, discharge opeing high pressure aluminium-plastic pipe 6, for discharge opeing high pressure aluminium-plastic pipe 8, and connect for discharge opeing height
Press aluminium-plastic pipe 8 and high-pressure rubber pipe 10 with holes.
（3）Positive displacement pump 5 and discharge opeing sequencing valve 7 are closed, opens solution feed pump 1 and feed flow sequencing valve 3, increases hydraulic pressure in drilling 12
Add, high pressure water enters drilling surrounding medium by high-pressure rubber pipe aperture 13 with holes, in the case of keeping hole packer 11 effective, reaches
To the fracturing pressure designed according to crustal stress situation, and stable high voltage is for a period of time, makes the stress shape of 12 periphery coal body 14 of drilling
State and Fracture Networks remain unchanged.
（4）Solution feed pump 1 and feed flow sequencing valve 3 are closed, opens positive displacement pump 5 and discharge opeing sequencing valve 7, extraction drilling surrounding medium
Middle water body, if coal slurry density is higher or gas density is higher, by the Opening pressure of feed flow sequencing valve 3 and discharge opeing sequencing valve 7
The minimum pressure that pressure is set to digital pressure gauge 9 after unlatching positive displacement pump is closed, by the Opening pressure of discharge opeing sequencing valve 7 and feed flow journey
The closing pressure of control valve 3 is set to the maximum pressure of digital pressure gauge 9 after unlatching solution feed pump, by the pressure value of digital pressure gauge 9
Signal control feed flow sequencing valve 3 and discharge opeing sequencing valve 7, to realize the automatic conversion of handling up of water body in the surrounding medium that drills；Until
Coal slurry density and drawing-off gas concentration are all reduced to below setting value.
（5）If step（4）Middle coal slurry density and gas density are all relatively low, then further improve opening for discharge opeing sequencing valve 7
Open pressure and the closing pressure of feed flow sequencing valve 3, repeat step（3）And step（4）.
（6）When improving hydraulic pressure coal dust around bleeder off hole and gas effect not significantly improved, then drainage Drilling Water
Body, removes the outer device that drills, and the gas that high-pressure rubber pipe with holes in drilling is connected to gas drainage system concentrates delivery pipe.
（7）When using this method to next drilling, repeat step（1）~（6）.
The specific embodiment of the above, the simply present invention, not makes the present invention limitation in any form, not
On the basis of departing from technical scheme, made simple modification, equivalent variations or modification, each fall within the protection of the present invention
Scope.
Claims (1)
- The anti-reflection method 1. a kind of projecting coal bed drilling waterpower is handled up, it is characterised in that include the following steps,A. drilling construction takes out drilling rod, by high-pressure rubber pipe with holes to after projected depth（10）It is put into drilling（12）It is interior, and in hole Installation hole packer near mouthful（11）, prevent high pressure water from high-pressure rubber pipe with holes（10）Flowed out in gap between hole wall；B. the outer device of connection drilling includes solution feed pump（1）, positive displacement pump（5）, feed flow sequencing valve（3）, discharge opeing sequencing valve（7）, threeway Valve（4）, digital pressure gauge（9）, feed flow high pressure aluminium-plastic pipe（2）, discharge opeing high pressure aluminium-plastic pipe（6）, for discharge opeing high pressure aluminium-plastic pipe（8）, And connect for discharge opeing high pressure aluminium-plastic pipe（8）With high-pressure rubber pipe with holes（10）；The feed flow high pressure aluminium-plastic pipe（2）, the high jewelling of discharge opeing Modeling pipe（6）, for discharge opeing high pressure aluminium-plastic pipe（8）, high-pressure rubber pipe with holes（10）System maximum pressure and minimum sub-atmospheric pressure can be born；C. positive displacement pump is closed（5）With discharge opeing sequencing valve（7）, open solution feed pump（1）With feed flow sequencing valve（3）, make drilling（12）It is interior Hydraulic pressure increase, high pressure water pass through high-pressure rubber pipe aperture with holes（13）Into drilling surrounding medium, hole packer is being kept（11）Effectively In the case of, reach the fracturing pressure designed according to crustal stress situation, and stable high voltage is for a period of time, makes drilling（12）Periphery coal Body（14）Stress state and Fracture Networks remain unchanged；D. solution feed pump is closed（1）With feed flow sequencing valve（3）, open positive displacement pump（5）With discharge opeing sequencing valve（7）, extraction drilling surrounding Water body in coal body, if coal slurry density or gas density are higher, by feed flow sequencing valve（3）Opening pressure and discharge opeing sequencing valve （7）Closing pressure be set to open positive displacement pump after digital pressure gauge（9）Minimum pressure, by discharge opeing sequencing valve（7）Unlatching pressure Power and feed flow sequencing valve（3）Closing pressure be set to open solution feed pump after digital pressure gauge（9）Maximum pressure, by digital pressure Table（9）Pressure value signal control feed flow sequencing valve（3）With discharge opeing sequencing valve（7）, to realize water body in the surrounding medium that drills Automatic conversion of handling up；Until coal slurry density and drawing-off gas concentration are all reduced to below setting value；If e. coal slurry density and gas density are all relatively low in step d, discharge opeing sequencing valve is further improved（7）Unlatching pressure Power and feed flow sequencing valve（3）Closing pressure, repeat step c and step d；F. when raising hydraulic pressure does not significantly improve coal dust around bleeder off hole and gas effect, then drainage drilling water body, tears open Except the outer device of drilling, the gas that high-pressure rubber pipe with holes in drilling is connected to gas drainage system concentrates delivery pipe；G. next drilling is arrived when using this method, repeat step a ~ f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172938.1A CN103993901B (en) | 2014-04-25 | 2014-04-25 | A kind of projecting coal bed drilling waterpower is handled up anti-reflection method |
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| CN201410172938.1A CN103993901B (en) | 2014-04-25 | 2014-04-25 | A kind of projecting coal bed drilling waterpower is handled up anti-reflection method |
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| CN103993901A CN103993901A (en) | 2014-08-20 |
| CN103993901B true CN103993901B (en) | 2018-04-20 |
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| CN201410172938.1A Expired - Fee Related CN103993901B (en) | 2014-04-25 | 2014-04-25 | A kind of projecting coal bed drilling waterpower is handled up anti-reflection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105696938B (en) * | 2014-11-24 | 2017-08-04 | 登封市君鑫煤业有限责任公司 | A kind of removing method of hole packer |
| CN105909248B (en) * | 2016-04-27 | 2019-08-20 | 何满潮 | For the retaining wall attitude reference device of high-pressure water jet joint-cutting, water jet drilling joint-cutting device and method |
| CN106930746B (en) * | 2017-03-06 | 2019-06-04 | 中国矿业大学 | Drilling acetone invades the alternative expression coal seam anti-reflection method combined with hydraulic fracturing |
| CN113654969A (en) * | 2021-08-31 | 2021-11-16 | 西南石油大学 | Fluid huff-puff compact oil gas effect evaluation device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1467214A1 (en) * | 1986-11-18 | 1989-03-23 | Карагандинское отделение Восточного научно-исследовательского института по безопасности работ в горной промышленности | Method of hydraulic treatment of coal seam |
| CN101029576A (en) * | 2007-04-02 | 2007-09-05 | 中国矿业大学 | Method and apparatus for protruding hazadous coal-bed safety guide-jet drilling |
| CN202064924U (en) * | 2011-04-29 | 2011-12-07 | 中国矿业大学 | Hydraulic fracturing equipment in coal mine |
| CN102889094A (en) * | 2011-07-20 | 2013-01-23 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Coal seam water injection system |
| CN103541710A (en) * | 2013-10-16 | 2014-01-29 | 中国矿业大学 | Method for forcedly draining gas from underground gas and liquid alternate phase-drive fracture coal of coal mine |
-
2014
- 2014-04-25 CN CN201410172938.1A patent/CN103993901B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1467214A1 (en) * | 1986-11-18 | 1989-03-23 | Карагандинское отделение Восточного научно-исследовательского института по безопасности работ в горной промышленности | Method of hydraulic treatment of coal seam |
| CN101029576A (en) * | 2007-04-02 | 2007-09-05 | 中国矿业大学 | Method and apparatus for protruding hazadous coal-bed safety guide-jet drilling |
| CN202064924U (en) * | 2011-04-29 | 2011-12-07 | 中国矿业大学 | Hydraulic fracturing equipment in coal mine |
| CN102889094A (en) * | 2011-07-20 | 2013-01-23 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Coal seam water injection system |
| CN103541710A (en) * | 2013-10-16 | 2014-01-29 | 中国矿业大学 | Method for forcedly draining gas from underground gas and liquid alternate phase-drive fracture coal of coal mine |
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