CN104100293B - Gas extraction drilling leak detection and leakage stoppage integrated device and method - Google Patents
Gas extraction drilling leak detection and leakage stoppage integrated device and method Download PDFInfo
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- CN104100293B CN104100293B CN201410381235.XA CN201410381235A CN104100293B CN 104100293 B CN104100293 B CN 104100293B CN 201410381235 A CN201410381235 A CN 201410381235A CN 104100293 B CN104100293 B CN 104100293B
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- 238000000605 extraction Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000005553 drilling Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims description 63
- 238000005086 pumping Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention discloses a gas extraction drilling leak detection and leak stoppage integrated device, which comprises a hole sealing pipe, a quick-connection tee joint, a detection pipe, a gas analyzer, an extraction pipe, a compressed air injection pump and an injection pipe, wherein the detection pipe and the injection pipe are arranged in the quick-connection tee joint; also discloses a method for utilizing the device, which mainly comprises the steps of gas extraction, borehole leak detection and borehole leak stopping; the device simple structure, installation and testing process are convenient, detect the precision height, and safe and reliable has effectually improved the operating efficiency.
Description
Technical field
The invention belongs to coal gas pumping field, be specifically related to mash gas pumping drilling leak detection and leak stopping integrated apparatus and method.
Background technology
Coal is in absolute main positions in the disposable energy resource structure of China, expects 2015, the coal demand that China will reach 3,800,000,000 tons.But the development of China coal industry is faced with stern challenge under the new situation.The particularly serious Gas Disaster accident of frequent generation, has become the most serious restraining factors of Safety of Coal Mine Production.China's condition of coal seam occurrence is complicated, and high methane and coal and gas outburst mine account for 1/3, and control coal mine gas disaster just becomes the most important thing of safety in production.In addition, gas (coal bed gas) is a kind of clean, the energy efficiently, remains high, under overall situation that emission reduction unprecedentedly increases, needs the exploitation dynamics strengthening gas badly, it can be used as the valuable source optimizing China's energy resource structure in international oil price.Gas pumping is not only the regional measure that effectively control coal mine gas disaster and the essential type safely that realizes are produced, and Ye Shi China implements the technical way of coalbed gas in coal mine area exploitation.Coal mine gas drainage and utilization are not only conducive to improving safety of coal mines level, also help increase energy supply, Optimization of Energy Structure, improve efficiency of energy utilization, promote energy-saving and emission-reduction, preserve the ecological environment.
Therefore, coal mine gas drainage Jian is complete, the energy and environmental benefit in one, achieve many things at one stroke, there is multiple economic and social benefit, China's economic development and social development are all of great immediate significance.Because China's coal-bed gas geological conditions is comparatively complicated, simultaneously by the impact of the present art, cause the sealing quality of down-hole extraction borehole poor, thus cause coal bed drilling mash gas extraction concentration generally on the low side.This constitutes threat safely not only to coal mine gas transport system, also makes mash gas extraction utilize cost to increase simultaneously, seriously hinders China's cbm development industry to faster and better future development.For the problem of extraction borehole method for sealing, Chinese scholar and field technician have been put to a large amount of practices, successively define injection hole sealing technology, polyurethane high molecule material hole sealing technology, coal ash secondary hole sealing technology etc., the different mining area that is applied in of such technology has achieved certain effect, but the existence of " unloading trim ring " formed due to coal mine down-hole tunnel driving and the creep behaviour at coal petrography self, cause boring after first achieve completes, along with the enforcement of extraction operation, the growth of secondary interstice will be caused, thus cause air absorption boring, reduce the concentration of mash gas extraction in boring.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of structure simple, without the need to changing, implement can complete gas pumping, boring is hunted leak and the integrated apparatus of leak stopping and method.
For achieving the above object, the invention provides following technical scheme: a kind of mash gas pumping drilling leak detection and leak stopping integrated apparatus, comprise hole sealing tube, connect threeway soon, sound-pipe, gas analyzer and drainage tube, also comprise pressure wind material feeding pump and filling tube, described sound-pipe and filling tube are built in and connect in threeway soon, described the first port connecing threeway is soon arranged on outside filling tube, second port is connected with drainage tube, 3rd port is connected with hole sealing tube, the discharge port end of described filling tube stretches in extraction borehole, feed inlet end is connected with pressure wind material feeding pump, described the first port the be provided with open and close valve I that control filling tube opening and closing and the open and close valve II that control drainage tube opening and closing corresponding to the second port connecing threeway soon.
Further, described connecing soon in threeway is built-in with four filling tubes, and the angle between adjacent two filling tubes is 90 °, and the discharge port end of described each filling tube is bending arc.
Further, described sound-pipe is arranged in the middle of four filling tubes, and the end of probe of sound-pipe stretches out the discharge port end of filling tube.
Further, described the 3rd port connecing threeway is soon ferrule structure, is provided with the taper washer be sleeved on outside filling tube in ferrule structure.
Present invention also offers a kind of method utilizing mash gas pumping drilling leak detection and leak stopping integrated apparatus, mainly comprise following steps:
(1) gas pumping: close open and close valve I, opens open and close valve II, is communicated with hole sealing tube and drainage tube mash gas extraction;
(2) boring leak detection: when finding that hole pumping and mining gas density is on the low side, opens open and close valve II and the valve on sound-pipe, detects oxygen or the nitrogen gas concentration value of different depth in boring, judges Gas leak position;
(3) bore blocking: close the valve on open and close valve II and sound-pipe, opens open and close valve I and pressure wind material feeding pump, loss circulation material is sprayed on the drill hole inner wall of Gas leak position by filling tube.
Beneficial effect of the present invention is: (1) can under the state of gas extraction, oxygen or the nitrogen gas concn that synchronously can carry out different depths in extraction borehole measure, gas density is detected in real time in extraction process, to carry out leak stopping sealing to air-leak section in time, effectively raise the extraction concentration of gas; (2) if the problem of leaking air, then oxygen or nitrogen gas concn can be caused to increase, cause potential safety hazard, by leak detection, leak stopping timely, effectively can ensure the safety of extraction borehole; (3) structure is simple, and easy to use, accuracy of detection is high, safe and reliable, can complete gas pumping, the leak detection of extraction borehole and plugging operations, effectively raising operating efficiency without the need to changing implement.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in the figure, mash gas pumping drilling leak detection of the present invention and leak stopping integrated apparatus, comprise hole sealing tube 1, connect threeway 2 soon, sound-pipe 3, gas analyzer 4 and drainage tube 5, also comprise pressure wind material feeding pump 6 and filling tube 7, described sound-pipe 3 is built in filling tube 7 and connects in threeway 2 soon, described the first port 21 connecing threeway 2 is soon arranged on outside filling tube 7, second port 22 is connected with drainage tube 5, 3rd port 23 is connected with hole sealing tube 1, the discharge port end of described filling tube 7 stretches in extraction borehole 8, feed inlet end is connected with pressure wind material feeding pump 6, described the first port 21 the be provided with open and close valve I 24 that control filling tube 7 opening and closing and the open and close valve II 25 that control drainage tube 5 opening and closing corresponding to the second port 22 place connecing threeway 2 soon.
In the present embodiment, three ports connecing threeway 2 are soon tightly connected with filling tube 7, drainage tube 5 and hole sealing tube 1 respectively, open and close valve I 24 and open and close valve II 25 control the opening and closing of filling tube and drainage tube, the opening and closing of sound-pipe 3 is controlled separately by (be connected with gas analyzer and the hold) valve 9 be arranged on sound-pipe 3, by selectively unlocking or closed drainage tube 5 circulation path with filling tube 7, realize gas pumping and bore blocking, then to sound-pipe 3 carry out open and close controlling can realize boring leak detection; Single unit system structure is simple, easy for installation, can meet different job requirements.
As the further improvement of such scheme, described connecing soon in threeway 2 is built-in with four filling tubes 7, and the angle between adjacent two filling tubes 7 is 90 °, and the discharge port end of described each filling tube 7 is bending arc; Dispersion carries out shutoff to Gas leak position, ensure that the reliability of shutoff, and the discharging opening design of Curved, is more conducive to the contact of loss circulation material and drill hole inner wall; Wherein, loss circulation material is epoxy resin ingredient.
In the present embodiment, described sound-pipe 3 is arranged in the middle of four filling tubes 7, and the end of probe of sound-pipe 3 stretches out the discharge port end of filling tube 7, both by the firm sound-pipe 3 of filling tube 7, also can avoid the detection accuracy affecting sound-pipe 3 because of filling tube 7 material spray simultaneously; Described the 3rd port 23 connecing threeway 2 is soon ferrule structure, is provided with the taper washer 26 be sleeved on outside filling tube 7 in ferrule structure; Can realize connecing soon connection and the sealing of the 3rd port 23 in threeway 2 by tightening card nested structure, simple and efficient to handle, sealing is reliable.
Present invention also offers a kind of method utilizing the gas pumping of above-mentioned integrated apparatus, hole leak detection and leak stopping, mainly comprise following steps:
(1) integrated apparatus is inserted in extraction borehole 8, and by each for this device link respectively with drainage tube 5, press wind material feeding pump 6, gas analyzer 4 and hole sealing tube 1 to be connected, ensure that each link is closely reliable, the valve 9 now connect soon on the open and close valve I 24 in threeway 2, open and close valve II 25 and sound-pipe 3 is closed condition; When starting mash gas extraction, ensure that open and close valve I 24 and valve 9 are closed condition, open open and close valve II 25, be communicated with hole sealing tube 1 and drainage tube 5, realize gas pumping.
(2) operation is patrolled and examined when finding that hole pumping and mining gas density is on the low side, need hunt leak to extraction borehole 8, now should ensure that open and close valve II 22 is for opening, open and close valve I 21 is closed condition, hole sealing tube 1 is communicated with drainage tube 5 road, opens the valve 9 on sound-pipe 3, utilize gas analyzer 4 to measure the gas concentration value of different hole depth, detect oxygen or the nitrogen gas concentration value of different depth in boring, judge Gas leak position; Also the valve 9 on sound-pipe 3 can be made to remain normally open, be convenient to the gas density of Real-Time Monitoring different depth in gas extraction process.
(3) after finding Gas leak position, leak stopping is carried out to Gas leak position, now should close the valve 9 on open and close valve II 22 and sound-pipe 3, open open and close valve I 21 and pressure wind material feeding pump 6, utilize down-hole compressed air, by pressure wind material feeding pump 6 and filling tube 7, loss circulation material is injected into the Gas leak position place of drill hole inner wall, thus realizes the leak stopping of boring.
Its operating principle is: in borehole sealing quality in the good and gastight situation of borehole circumference, the oxygen in extraction borehole 8 or nitrogen gas concn along hole depth distribution should basicly stable unanimously (namely fluctuating in less scope); Problem that if borehole sealing is second-rate or a certain position of bore inner leaks air, under extraction suction function, in extraction borehole 8 can there is sudden change along the distribution of hole depth in oxygen or nitrogen gas concn, this position is Gas leak position, therefore can determine Gas leak position according to the change of the concentration measured value of oxygen or nitrogen; Judge extraction borehole 8 Gas leak position after, by filling tube 7 by loss circulation material spray to Gas leak position place, thus enforcement extraction borehole leak detection integrated with leak stopping.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (5)
1. a mash gas pumping drilling leak detection and leak stopping integrated apparatus, comprise hole sealing tube, connect threeway soon, sound-pipe, gas analyzer and drainage tube, it is characterized in that: also comprise pressure wind material feeding pump and filling tube, described sound-pipe and filling tube are built in and connect in threeway soon, described the first port connecing threeway is soon arranged on outside filling tube, second port is connected with drainage tube, 3rd port is connected with hole sealing tube, the discharge port end of described filling tube stretches in extraction borehole, feed inlet end is connected with pressure wind material feeding pump, described the first port the be provided with open and close valve I that control filling tube opening and closing and the open and close valve II that control drainage tube opening and closing corresponding to the second port connecing threeway soon.
2. mash gas pumping drilling leak detection according to claim 1 and leak stopping integrated apparatus, it is characterized in that: described connecing soon in threeway is built-in with four filling tubes, angle between adjacent two filling tubes is 90 °, and the discharge port end of described each filling tube is bending arc.
3. mash gas pumping drilling leak detection according to claim 2 and leak stopping integrated apparatus, is characterized in that: described sound-pipe is arranged in the middle of four filling tubes, and the end of probe of sound-pipe stretches out the discharge port end of filling tube.
4. mash gas pumping drilling leak detection according to claim 3 and leak stopping integrated apparatus, is characterized in that: described the 3rd port connecing threeway is soon ferrule structure, is provided with the taper washer be sleeved on outside filling tube in ferrule structure.
5. utilize leak detection and the blocking method of the integrated apparatus according to any one of claim 1-4, it is characterized in that mainly comprising following steps:
(1) gas pumping: close open and close valve I, opens open and close valve II, is communicated with hole sealing tube and drainage tube mash gas extraction;
(2) boring leak detection: when finding that hole pumping and mining gas density is on the low side, opens open and close valve II and the valve on sound-pipe, detects oxygen or the nitrogen gas concentration value of different depth in boring, judges Gas leak position;
(3) bore blocking: close the valve on open and close valve II and sound-pipe, opens open and close valve I and pressure wind material feeding pump, loss circulation material is sprayed on the drill hole inner wall of Gas leak position by filling tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410381235.XA CN104100293B (en) | 2014-08-05 | 2014-08-05 | Gas extraction drilling leak detection and leakage stoppage integrated device and method |
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| CN201410381235.XA CN104100293B (en) | 2014-08-05 | 2014-08-05 | Gas extraction drilling leak detection and leakage stoppage integrated device and method |
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| CN104100293A CN104100293A (en) | 2014-10-15 |
| CN104100293B true CN104100293B (en) | 2016-01-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109083613A (en) * | 2017-06-14 | 2018-12-25 | 西安科技大学 | A kind of leak detection of mash gas pumping drilling and leak stopping integrated apparatus |
| CN109989726B (en) * | 2018-11-22 | 2024-06-11 | 中煤地质集团有限公司 | Divided downhole fixed-point injector and method for repairing water supply pipe well by using same |
| CN114183136B (en) * | 2021-12-21 | 2024-01-02 | 华北科技学院(中国煤矿安全技术培训中心) | Device and method for detecting leakage points of coal seam drilling |
| CN117127967A (en) * | 2023-09-27 | 2023-11-28 | 平顶山天安煤业股份有限公司勘探工程处 | System and method for detecting coal seam drilling gas extraction leakage point |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2345216C2 (en) * | 2007-03-09 | 2009-01-27 | Институт угля и углехимии Сибирского отделения Российской Академии Наук (ИУУ СО РАН) | In-situ coal series gasification method |
| CN202165074U (en) * | 2011-07-22 | 2012-03-14 | 苏毅 | Device for detecting gas leakage position of drilling hole |
| CN102900428B (en) * | 2012-09-13 | 2015-02-25 | 焦作市美格安矿业科技有限公司 | Device and method for detecting sealing quality and gas-leakage position of coal seam gas extraction drill-hole |
| CN103161443B (en) * | 2013-04-10 | 2016-01-20 | 中国矿业大学 | For spy envelope integral method and the device of mash gas pumping drilling |
| CN203962029U (en) * | 2014-08-05 | 2014-11-26 | 中煤科工集团重庆研究院有限公司 | Gas extraction drilling leak detection and leaking stoppage integrated device |
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