CN111980682A - Gas pressure testing equipment and method for ultra-long drilling coal seam - Google Patents
Gas pressure testing equipment and method for ultra-long drilling coal seam Download PDFInfo
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- CN111980682A CN111980682A CN202010962137.0A CN202010962137A CN111980682A CN 111980682 A CN111980682 A CN 111980682A CN 202010962137 A CN202010962137 A CN 202010962137A CN 111980682 A CN111980682 A CN 111980682A
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- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009530 blood pressure measurement Methods 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 10
- 239000002775 capsule Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 238000007569 slipcasting Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000009429 electrical wiring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- 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
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
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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)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention belongs to the technical field of coal seam gas extraction, and particularly relates to an ultra-long drilling coal seam gas pressure testing device and method. According to the device and the method disclosed by the invention, the gas pressure sensor is connected with the pressure gauge, so that the gas pressure in the pressure measuring air chamber can be monitored in real time through the pressure gauge, and the coal bed gas disaster can be greatly reduced.
Description
Technical Field
The invention belongs to the technical field of coal seam gas extraction, and particularly relates to an ultra-long drilling coal seam gas pressure testing device and method.
Background
The coal seam gas disaster is one of five major disasters of a mine and is an important factor for restricting the efficient and safe production of a coal mine, gas extraction is a permanent strategy for preventing and controlling the coal mine gas disaster, along with the popularization of a directional kilometer drilling machine, the gas in a coal mine construction ultra-long directional long drilling hole pre-extraction coal roadway strip and a working face section becomes an important technical means, and the gas pressure is used as a core index for preventing and controlling the coal mine gas, so that the early test and the accurate test can be realized, and the important significance is realized for the formulation of a coal mine gas control technical scheme and the evaluation of a control effect.
Disclosure of Invention
The invention aims to solve the problems and provides a device and a method for testing gas pressure of an ultra-long drilling coal seam.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides an overlength drilling coal seam gas pressure test equipment, includes pressure measurement drilling car and the pipeline assembly device that is connected with pressure measurement drilling car, pressure measurement drilling car including set up at the gas pressure sensor of foremost, the expansion airbag that the gas pressure sensor rear end is connected, to the expansion capsule carry out gas filled pneumatic pump, with expansion airbag and pneumatic pump fixed connection's running gear and the walking power device of drive running gear walking, pipeline assembly device include grouting pipe and the signal line that pressure measurement drilling car rear end is connected, gas pressure sensor is connected with the manometer through the signal line, grouting pipe's slip casting access connection have grouting device, grouting pipe's slip casting export be located the rear end of pressure measurement drilling car.
The walking device comprises four groups of telescopic walking wheels.
The pipeline assembly device also comprises a power supply, an electric wire arranged between the power supply and the walking power device, and an electric wire arranged in front of the pneumatic pump and the power supply.
A method for testing gas pressure of an ultra-long drilling coal seam comprises the following steps:
(1) firstly, constructing directional long drill holes on a coal seam roof (bottom plate) by using a kilometer directional drilling machine, changing the construction track of the directional long drill holes after the directional long drill holes reach a test place, and enabling the kilometer directional drilling machine to exit from the directional long drill holes after the directional long drill holes penetrate through the coal seam and are used as pressure measuring holes;
(2) installing the pressure measuring drilling vehicle and the pipeline assembly device, and driving the pressure measuring drilling vehicle and the pipeline assembly device to the rock hole position of the coal rock interface along the directional long drill hole after the installation;
(3) starting the air pressure pump, and inflating the expansion capsule to plug the drilled hole;
(4) starting a grouting device, grouting into the directional long drill hole through a grouting pipe of the pipeline assembly device, plugging the full directional long drill hole after grout is discharged from a grouting outlet arranged behind the pressure measuring drill hole vehicle, and reserving a directional long drill hole section in the pressure measuring drill hole vehicle as a pressure measuring air chamber;
(5) waiting for the slurry to be completely solidified;
(6) the gas pressure data in the pressure measuring air chamber is transmitted and displayed on the pressure gauge through the gas pressure sensor at the front end of the pressure measuring drill car and the signal line in the pipeline assembly device, so that the gas pressure test work of the ultra-long drill hole is realized.
The slurry comprises polyurethane and cement mortar.
The invention has the beneficial effects that:
when the invention is used, a kilometer directional drilling machine is used for constructing directional long drill holes on a coal seam roof (bottom plate), the directional long drill holes reach a test place, the construction track of the directional long drill holes is changed, the directional long drill holes penetrate through the coal seam to retreat out of the directional long drill holes, then a pressure measuring drilling vehicle and a pipeline assembly device are installed, after the installation is finished, the pressure measuring drilling vehicle and the pipeline assembly device run to the rock hole position of a coal rock interface along the directional long drill holes, then an air pressure pump is started to inflate an inflation capsule to seal the directional long drill holes, then grouting is carried out in the directional long drill holes through the pipeline assembly device through grouting equipment, slurry is discharged through a grouting outlet arranged at the back of the pressure measuring drilling vehicle to seal the full directional long drill holes, the directional long drill hole section in the pressure measuring drilling vehicle is reserved as a pressure measuring air chamber, after the slurry is completely solidified, a gas pressure sensor at the front end of the pressure measuring drilling vehicle 10 and a signal line in the pipeline The gas pressure data in the test hole are transmitted and displayed on the pressure gauge 12, the gas pressure test work of the ultra-long drill hole is realized, and meanwhile, the polyurethane and cement mortar are used for sealing the hole, so that the sealing performance of the test hole is better, and the detected data are more accurate. According to the device and the method disclosed by the invention, the gas pressure sensor is connected with the pressure gauge, so that the gas pressure in the pressure measuring air chamber can be monitored in real time through the pressure gauge, and the coal bed gas disaster can be greatly reduced.
Pressure gauge with attached figure
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Referring to fig. 1, the numbering: the coal bed is 1, the directional long drill hole is 2, the gas pressure sensor is 3, the expansion capsule is 4, the walking device is 5, the pneumatic pump is 6, the walking power device is 7, the pipeline assembly device is 8, the grouting outlet is 9, the pressure measuring drill hole vehicle is 10, the grouting device is 11, and the pressure gauge is 12.
The invention relates to gas pressure testing equipment for an ultra-long drilling coal seam, which comprises a pressure-measuring drilling vehicle 10 and a pipeline assembly device 8 connected with the pressure-measuring drilling vehicle 10, wherein the pressure-measuring drilling vehicle 10 comprises a gas pressure sensor 2 arranged at the foremost end, an expansion air bag 3 connected with the rear end of the gas pressure sensor 2, an air pressure pump 6 for inflating the expansion air bag 3, a walking device 5 fixedly connected with the expansion air bag 3 and the air pressure pump 6, and a walking power device 7 for driving the walking device 5 to walk, the pipeline assembly device 8 comprises a grouting pipe connected with the rear end of the pressure-measuring drilling vehicle 10 and a signal wire, the gas pressure sensor 2 is connected with a pressure gauge 12 through the signal wire, a grouting inlet of the grouting pipe is connected with a grouting device, and a grouting outlet 9 of the grouting pipe is positioned at the rear end of the pressure-measuring drilling vehicle 10.
The walking device 2 comprises four groups of telescopic walking wheels, and the pressure measuring drilling vehicle 10 can adapt to the gradient change and aperture change of the directional long drill holes through the telescopic adjustment of the legs of the four groups of telescopic walking wheels.
The line assembly 8 further includes a power source, electrical wiring disposed between the power source and the walking power unit, and electrical wiring disposed before the pneumatic pump and the power source.
A method for testing gas pressure of an ultra-long drilling coal seam comprises the following steps:
(1) firstly, constructing a directional long drill hole 2 on a coal seam roof (bottom plate) by using a kilometer directional drilling machine, changing the construction track of the directional long drill hole after the directional long drill hole 2 reaches a test place, and enabling the kilometer directional drilling machine to quit the directional long drill hole after the directional long drill hole 2 penetrates through the coal seam to be full thick, wherein the directional long drill hole 2 is used as a pressure measuring hole;
(7) installing the pressure measuring drilling vehicle 10 and the pipeline assembly device 8, and driving the pressure measuring drilling vehicle 10 and the pipeline assembly device 8 to the rock hole position of the coal rock interface along the directional long drill hole 2 after the installation;
(8) starting the air pressure pump 6, inflating and plugging the expansion capsule 4 to prevent the directional long drill hole 2 from being dead in grouting to cause the directional long drill hole 2 to be scrapped;
(9) starting a grouting device 11, grouting into the directional long drill hole 2 through a grouting pipe of the pipeline assembly device 8, plugging the full directional long drill hole 2 after grout is discharged from a grouting outlet 9 arranged at the rear of the pressure measuring drill truck 10, and reserving a directional long drill hole section in the pressure measuring drill truck 10 as a pressure measuring air chamber;
(10) waiting for the slurry to be completely solidified;
(11) the gas pressure data in the pressure measuring air chamber is transmitted and displayed on the pressure gauge 12 through the gas pressure sensor 3 at the front end of the pressure measuring drilling vehicle 10 and a signal line in the pipeline assembly device 8, so that the gas pressure testing work of the ultra-long drilling hole is realized.
The slurry comprises polyurethane and cement mortar.
When the invention is used, a kilometer directional drilling machine is used for constructing directional long drill holes on a coal seam roof (bottom plate), the construction track of the directional long drill holes 2 is changed after the directional long drill holes 2 reach a test place, the directional long drill holes 2 penetrate through the coal seam to be full thick, the kilometer directional drilling machine exits the directional long drill holes 2, then a pressure measuring drilling vehicle 10 and a pipeline assembly device 8 are installed, after the installation is finished, the pressure measuring drilling vehicle 10 and the pipeline assembly device 8 are driven to rock hole positions of a coal rock interface along the directional long drill holes 2, then an air pressure pump 6 is started to inflate an expansion capsule 4 to block the directional long drill holes 2, then grouting is carried out into the directional long drill holes 2 through grouting pipes of the pipeline assembly device, grout is discharged through a grouting outlet 9 arranged behind the pressure measuring drilling vehicle 10 to block the full directional long drill holes 2, and the directional long drill hole section in the pressure measuring drilling vehicle is reserved as a pressure measuring air chamber, after the grout is completely solidified, the gas pressure data in the pressure measuring air chamber is transmitted and displayed on the pressure gauge 12 through a gas pressure sensor at the front end of the pressure measuring drilling vehicle 10 and a signal line in a pipeline assembly device, the gas pressure testing work of the ultra-long drilling hole is realized, meanwhile, the polyurethane and cement mortar are used for sealing the hole, the sealing performance of the testing hole is better, and the detected data are more accurate. According to the device and the method disclosed by the invention, the gas pressure sensor is connected with the pressure gauge, so that the gas pressure in the pressure measuring air chamber can be monitored in real time through the pressure gauge, and the coal bed gas disaster can be greatly reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an overlength drilling coal seam gas pressure test is equipped, includes pressure measurement drilling car and the pipeline assembly device who is connected with pressure measurement drilling car, its characterized in that: pressure measurement drilling car including set up at the gas pressure sensor of foremost, the inflation gasbag that the gas pressure sensor rear end is connected, to the inflation capsule carry out gas filled pneumatic pump, with inflation gasbag and pneumatic pump fixed connection's running gear and the walking power device of drive running gear walking, pipeline assembly device include grouting pipe and the signal line that pressure measurement drilling car rear end is connected, gas pressure sensor passing signal line is connected with the manometer, grouting pipe's slip casting access connection have a slip casting device, grouting pipe's slip casting export be located pressure measurement drilling car's rear end.
2. The gas pressure test equipment for the ultra-long drilled coal seam according to claim 1, characterized in that: the walking device comprises four groups of telescopic walking wheels.
3. The gas pressure test equipment for the ultra-long drilled coal seam according to claim 1, characterized in that: the pipeline assembly device also comprises a power supply, an electric wire arranged between the power supply and the walking power device, and an electric wire arranged in front of the pneumatic pump and the power supply.
4. The method for testing the gas pressure of the ultra-long drilling coal seam is characterized by comprising the following steps of:
(1) firstly, constructing directional long drill holes on a coal seam roof (bottom plate) by using a kilometer directional drilling machine, changing the construction track of the directional long drill holes after the directional long drill holes reach a test place, and enabling the kilometer directional drilling machine to exit from the directional long drill holes after the directional long drill holes penetrate through the coal seam and are used as pressure measuring holes;
(2) installing the pressure measuring drilling vehicle and the pipeline assembly device, and driving the pressure measuring drilling vehicle and the pipeline assembly device to the rock hole position of the coal rock interface along the directional long drill hole after the installation;
(3) starting the air pressure pump, and inflating the expansion capsule to plug the drilled hole;
(4) starting a grouting device, grouting into the directional long drill hole through a grouting pipe of the pipeline assembly device, plugging the full directional long drill hole after grout is discharged from a grouting outlet arranged behind the pressure measuring drill hole vehicle, and reserving a directional long drill hole section in the pressure measuring drill hole vehicle as a pressure measuring air chamber;
(5) waiting for the slurry to be completely solidified;
(6) the gas pressure data in the pressure measuring air chamber is transmitted and displayed on the pressure gauge through the gas pressure sensor at the front end of the pressure measuring drill car and the signal line in the pipeline assembly device, so that the gas pressure test work of the ultra-long drill hole is realized.
5. The method for testing the gas pressure of the ultra-long drilled coal seam according to claim 1, wherein the method comprises the following steps: the slurry comprises polyurethane and cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962137.0A CN111980682A (en) | 2020-09-14 | 2020-09-14 | Gas pressure testing equipment and method for ultra-long drilling coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962137.0A CN111980682A (en) | 2020-09-14 | 2020-09-14 | Gas pressure testing equipment and method for ultra-long drilling coal seam |
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| Publication Number | Publication Date |
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| CN111980682A true CN111980682A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010962137.0A Pending CN111980682A (en) | 2020-09-14 | 2020-09-14 | Gas pressure testing equipment and method for ultra-long drilling coal seam |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446193A (en) * | 2008-12-12 | 2009-06-03 | 中国矿业大学 | Device and method for detecting coal seam gas pressure and coal wall stress |
| US20110192594A1 (en) * | 2007-04-02 | 2011-08-11 | Halliburton Energy Services, Inc. | Use of Micro-Electro-Mechanical Systems (MEMS) in Well Treatments |
| CN108215693A (en) * | 2016-12-14 | 2018-06-29 | 重庆市江津区华茂机械有限责任公司 | Mine pit survey vehicle |
| CN111456721A (en) * | 2020-04-16 | 2020-07-28 | 西安科技大学 | Device and method for measuring gas pressure of multistage air bag rapid hole sealing |
| CN212535641U (en) * | 2020-09-14 | 2021-02-12 | 河南能源化工集团研究总院有限公司 | Gas pressure testing equipment for ultra-long drilling coal seam |
-
2020
- 2020-09-14 CN CN202010962137.0A patent/CN111980682A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110192594A1 (en) * | 2007-04-02 | 2011-08-11 | Halliburton Energy Services, Inc. | Use of Micro-Electro-Mechanical Systems (MEMS) in Well Treatments |
| CN101446193A (en) * | 2008-12-12 | 2009-06-03 | 中国矿业大学 | Device and method for detecting coal seam gas pressure and coal wall stress |
| CN108215693A (en) * | 2016-12-14 | 2018-06-29 | 重庆市江津区华茂机械有限责任公司 | Mine pit survey vehicle |
| CN111456721A (en) * | 2020-04-16 | 2020-07-28 | 西安科技大学 | Device and method for measuring gas pressure of multistage air bag rapid hole sealing |
| CN212535641U (en) * | 2020-09-14 | 2021-02-12 | 河南能源化工集团研究总院有限公司 | Gas pressure testing equipment for ultra-long drilling coal seam |
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