CN106988680A - Ice pellets abradant jet Aided Machine drills and coal seam cutting method - Google Patents
Ice pellets abradant jet Aided Machine drills and coal seam cutting method Download PDFInfo
- Publication number
- CN106988680A CN106988680A CN201710389997.8A CN201710389997A CN106988680A CN 106988680 A CN106988680 A CN 106988680A CN 201710389997 A CN201710389997 A CN 201710389997A CN 106988680 A CN106988680 A CN 106988680A
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- Prior art keywords
- ice pellets
- drilling
- drill bit
- jet
- drilling rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 59
- 239000008188 pellet Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 72
- 239000003082 abrasive agent Substances 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 16
- 239000000155 melt Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- 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
- 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 ice pellets abradant jet Aided Machine boring method, comprise the following steps that：1）Drill bit is arranged on drilling rod, and crept into forward in coal and rock by the turning effort of drilling rod, drilling is formed；2）Ice pellets abrasive jet device is opened, ice pellets abradant jet is by the centre bore injection along drilling rod and drill bit, and percussive drilling bottom coal and rock, drill bit is persistently crept into, until drilling is completed, closes rig and ice pellets abrasive jet device.The present invention improves drilling efficiency using the drilling of ice pellets abradant jet Aided Machine；The present invention is using the drilling of ice pellets abradant jet Aided Machine, and ice pellets, which hits to melt after coal and rock, need to absorb heat, it is possible to decrease borehole environment temperature, so as to reduce the abrasion of drilling rod；The invention also discloses a kind of method of ice pellets abradant jet coal seam cutting, replace conventional abrasives to carry out slot using ice pellets, on the one hand effectively expand slot scope, while ice pellets, which melts, avoids the problems such as ature of coal reduction is with blocking hole caused by conventional abrasives.
Description
Technical field
The invention belongs to water jet drilling technique field, be specifically related to a kind of drilling of ice pellets abradant jet Aided Machine and
The method of coal seam cutting.
Background technology
China's major part mining area coal seam has that permeability is low, hosting geological condition is complicated, the low feature of gas saturation.Pin
To these unfavorable factors, it is necessary to carry out coal and rock transformation so as to increase gas permeability of coal seam, coal bed gas high-efficiency mining could be realized.From
Since 1970s, high-pressure water jet coal seam slotting technique achieves good effect at the anti-reflection aspect in coal seam.
A large amount of engineering practices show, High Pressure Pure Water jet coal seam cutting is limited in scope, if can suitably increase jet impulse
Dynamics just can effectively increase the scope of slot release, though and jet dynamics can be lifted to jet pump by unilaterally improving jet pressure
Bring harsher requirement.On this basis, taken out to lift jet impulse dynamics, increase coal seam cutting length, expand gas
Scope is adopted, the technology develops into pulsing jet, high temp jet, abradant jet and shimmy jet etc. by initial pure water jets slot
A variety of jet slotting techniques.Wherein, abradant jet substantially increases effective slot length, expands coal bed gas extraction model
Enclose.Meanwhile, a large amount of abrasive grains inject coal seam and also bring problems：1. Coal Quality is reduced；2. easy plugging hole slot
Groove, causes gas pumping difficult with deslagging；3. the phenomenons such as bit freezing locking may be caused.Therefore, jet can be increased by finding one kind
Impact dynamics can avoid the alternative abrasives of disadvantages described above from turning into the bottleneck for restricting the technology long term growth again.
Research finds that ice pellets is a kind of alternative abrasives possible in theory：1. ice pellets has solid state properties, and its hardness is reachable
To Mohs' hardness 2 ~ 4, jet impulse dynamics can be effectively lifted；2. ice pellets melts rapidly after injecting coal seam, can avoid Conventional abrasives
Caused by after being mixed into the problems such as ature of coal reduction, blocking hole；3. ice pellets, which melts, belongs to endothermic process, it is possible to decrease the local temperature in coal seam
Degree, reduces mine waste heat disaster.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of drilling and slot efficiency high, and can reduce drilling or
The method of the drilling of ice pellets abradant jet Aided Machine and coal seam cutting of drill rod abrasion degree during slot.
The technical solution adopted by the present invention is：A kind of method of ice pellets abradant jet Aided Machine drilling, specific steps are such as
Under：
1）Drill bit is arranged on drilling rod, and crept into forward in coal and rock by the turning effort of drilling rod, drilling is formed；
2）Ice pellets abrasive jet device is opened, the centre bore by ice pellets abradant jet along drilling rod and drill bit is projected, percussive drilling
Bottom coal and rock, drill bit is persistently crept into, until drilling is completed, closes rig and ice pellets abrasive jet device.
A kind of method that ice pellets abradant jet aids in coal seam cutting, is comprised the following steps that：
1）Drill bit is arranged on drilling rod, and crept into forward in coal seam by the turning effort of drilling rod, drilling is formed；
2）When drill bit is reached at coal seam cutting, drill bit stops drilling, ice pellets abrasive jet device is opened, by ice pellets abradant jet edge
The entrance of drilling rod centre bore, ice pellets abrasive material is projected from the jet orifice on drilling rod or drill bit side wall, the circumferential coal seam pair of sinker bar
Coal seam carries out slot, after slot terminates, and closes ice pellets abrasive jet device, and drill bit continues to creep into；
3）Repeat step 2）, until required slot is fully completed.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）The present invention improves drilling and slot efficiency using the drilling of ice pellets abradant jet Aided Machine and coal seam cutting；
（2）The present invention is using the drilling of ice pellets abradant jet Aided Machine, and ice pellets hits to be melted behind coal and rock or coal seam, absorbs heat
Amount, reduces the environment temperature of drilling, so as to reduce the abrasion of drill bit；
（3）The present invention carries out coal seam cutting using ice pellets abradant jet, can expand the scope of slot, while ice pellets is formed after melting
Water, can avoid Conventional abrasives after being mixed into the problems such as caused ature of coal reduction, blocking hole.
Brief description of the drawings
Fig. 1 is ice pellets abradant jet Aided Machine drilling schematic diagram.
Fig. 2 is that ice pellets abradant jet coal seam cutting effect and the contrast of water jet slot and traditional abrasive particle slot effect are shown
It is intended to.
Embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings.
A kind of method of ice pellets abradant jet Aided Machine drilling, is comprised the following steps that：
1）Be first depending on coal road arrangement with coalbed coring design drilling parameter, including bore position, drilling depth, the spacing of wells,
At drilling hole amount etc., the tunnel that rig is moved to hole site to be drilled, the equipment such as drilling rod in assembling.
2）Drill bit 5 is arranged on drilling rod 1, starts rig, is crept into forward by the turning effort fractured rock of drilling rod 1,
Drilling 3 is formed in coal and rock 2.
3）While drilling, ice pellets abrasive jet device is opened, makes ice pellets abradant jet along drilling rod 1 and drill bit 5
Centre bore is projected, percussive drilling bottom coal and rock 2, and drill bit 5 is persistently crept into, until drilling is completed, closes rig and ice pellets abrasive material
Fluidic device.
As shown in figure 1, centre bore of the ice pellets abradant jet along drilling rod 1 and drill bit 5 is projected, 3 bottoms of drilling are impacted
The surface of coal and rock 2, can make coal and rock formation initial crack, facilitate the further fractured coal and rock 2 of drill bit 5；Hit after coal and rock,
Ice pellets abrasive material 6 is interior to external diffusion in drilling 3 with fluid, while ice pellets abrasive material melts rapidly, it is possible to decrease drill bit 5 and drilling rod 1
Bit freezing effect, and the thawing of ice pellets abrasive material 6 needs absorption heat, it is possible to decrease the temperature of drill bit 5, it can effectively reduce the mill of drill bit 5
Damage, extend its service life.
A kind of method that ice pellets abradant jet aids in coal seam cutting, is comprised the following steps that：
1）Drill bit 5 is arranged on drilling rod 1, and crept into forward in coal seam 11 by the turning effort of drilling rod 1；Complete drilling；
2）Rollback drilling rod, when drill bit is reached at the slot of coal seam 11, drill bit 5 stops drilling, starts ice pellets abrasive jet device, regulation
System is pumped to 5MPa, after pressure stabilisation, then regulating system is pumped to 10MPa, and after pressure stabilisation, regulating system is pumped to
15MPa, carry out slot after pressure stabilisation, every 1 seam clipping time is 15min；
3）Ice pellets abradant jet will enter along drilling rod centre bore, and ice pellets abrasive material is from drilling rod 1（Or drill bit 5）Jet orifice on the wall of side
Project, the circumferential coal seam of sinker bar 1 carries out slot to coal seam, after slot terminates, and closes ice pellets abrasive jet device, retracts brill
Bar certain distance carries out second of slot；
4）Repeat step 2）With step 3）, until required slot is fully completed, close ice pellets abrasive jet device and rig.
As shown in Fig. 2 coal seam 11 be between roof strata 12 and floor strata 10, High Pressure Pure Water jet along drilling 7
Coal seam 11 is flowed to carry out forming slot 16 after the completion of slot, slot.Conventional abrasives jet flows to coal seam 11 along drilling 9 and cut
Slot 14 is formed after the completion of seam, slot, while a large amount of conventional abrasives particles 13 of residual in slot 14；Ice pellets abradant jet along
Drilling 8 forms slot 15 after the completion of flowing to coal seam 11, slot.By the slot that ultimately forms as can be seen that ice pellets abradant jet
The slot 15 of slot formation is bigger compared with the long width of slot 16 that pure water jets slot is formed, but slightly less than conventional abrasives jet slot
The slot 14 of formation, but melt the residual without abrasive grain due to ice pellets in slot 15.
Claims (2)
1. a kind of method of ice pellets abradant jet Aided Machine drilling, is comprised the following steps that：
1）Drill bit is arranged on drilling rod, and crept into forward in coal and rock by the turning effort of drilling rod, drilling is formed；
2）Ice pellets abrasive jet device is opened, the centre bore by ice pellets abradant jet along drilling rod and drill bit is projected, percussive drilling
Bottom coal and rock, drill bit is persistently crept into, until drilling is completed, closes rig and ice pellets abrasive jet device.
2. a kind of method that ice pellets abradant jet aids in coal seam cutting, is comprised the following steps that：
1）Drill bit is arranged on drilling rod, and crept into forward in coal seam by the turning effort of drilling rod, drilling is formed；
2）Rollback drilling rod, when jet orifice is reached at coal seam cutting, drill bit stops retracting, and ice pellets abrasive jet device is opened, by ice
Grain abradant jet enters along drilling rod centre bore, and ice pellets abrasive material is projected from the jet orifice on drilling rod or drill bit side wall, sinker bar
Circumferential coal seam carries out slot to coal seam, after slot terminates, and closes ice pellets abrasive jet device, and drill bit continues to retract；
3）Repeat step 2）, until required slot is fully completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389997.8A CN106988680A (en) | 2017-05-27 | 2017-05-27 | Ice pellets abradant jet Aided Machine drills and coal seam cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389997.8A CN106988680A (en) | 2017-05-27 | 2017-05-27 | Ice pellets abradant jet Aided Machine drills and coal seam cutting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106988680A true CN106988680A (en) | 2017-07-28 |
Family
ID=59419842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389997.8A Pending CN106988680A (en) | 2017-05-27 | 2017-05-27 | Ice pellets abradant jet Aided Machine drills and coal seam cutting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106988680A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343378A (en) * | 2018-01-29 | 2018-07-31 | 中国矿业大学 | A kind of coal seam rapid drilling method of electric pulse auxiliary machinery drilling |
| CN108590512A (en) * | 2018-03-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of flammable ice-cold drilling method and device |
| CN108691508A (en) * | 2018-05-09 | 2018-10-23 | 中国矿业大学 | A kind of driving method of solid rock weakening strength |
| CN108868762A (en) * | 2018-08-23 | 2018-11-23 | 江苏中机矿山设备有限公司 | A kind of abradant jet auxiliary coalcutter breaks the device and method of hard rock |
| CN109653722A (en) * | 2019-01-21 | 2019-04-19 | 中煤科工集团重庆研究院有限公司 | A kind of mash gas extraction device and method of coal seam hydraulic slotted liner technique and the linkage of lower screen casing |
| CN110656905A (en) * | 2019-10-17 | 2020-01-07 | 中国石油大学(北京) | Abrasive jet windowing device and method |
| CN111287702A (en) * | 2020-02-20 | 2020-06-16 | 中国矿业大学 | Coal bed permeability increasing method with ice particle abrasive jet flow slotting and microwave heat injection in cooperation |
| CN113818892A (en) * | 2021-07-29 | 2021-12-21 | 中国铁建重工集团股份有限公司 | Rock breaking and tunneling device and rock breaking method thereof |
| RU2779170C1 (en) * | 2022-03-23 | 2022-09-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Well drilling method in ice cover |
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| JPH03290586A (en) * | 1990-04-06 | 1991-12-20 | Yoshida Tekkosho:Kk | Jet drilling method using icy grain and device thereof |
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2017
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343378B (en) * | 2018-01-29 | 2019-09-03 | 中国矿业大学 | A kind of coal seam rapid drilling method of the mechanical drilling of electric pulse auxiliary |
| CN108343378A (en) * | 2018-01-29 | 2018-07-31 | 中国矿业大学 | A kind of coal seam rapid drilling method of electric pulse auxiliary machinery drilling |
| CN108590512A (en) * | 2018-03-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of flammable ice-cold drilling method and device |
| CN108590512B (en) * | 2018-03-28 | 2023-10-10 | 中国矿业大学(北京) | Combustible ice-cold drilling method and device |
| CN108691508A (en) * | 2018-05-09 | 2018-10-23 | 中国矿业大学 | A kind of driving method of solid rock weakening strength |
| CN108691508B (en) * | 2018-05-09 | 2019-07-02 | 中国矿业大学 | A kind of driving method of solid rock weakening strength |
| CN108868762A (en) * | 2018-08-23 | 2018-11-23 | 江苏中机矿山设备有限公司 | A kind of abradant jet auxiliary coalcutter breaks the device and method of hard rock |
| CN108868762B (en) * | 2018-08-23 | 2024-04-09 | 江苏中机矿山设备有限公司 | Device and method for breaking hard rock of coal mining machine by aid of abrasive jet |
| CN109653722A (en) * | 2019-01-21 | 2019-04-19 | 中煤科工集团重庆研究院有限公司 | A kind of mash gas extraction device and method of coal seam hydraulic slotted liner technique and the linkage of lower screen casing |
| CN110656905A (en) * | 2019-10-17 | 2020-01-07 | 中国石油大学(北京) | Abrasive jet windowing device and method |
| CN111287702A (en) * | 2020-02-20 | 2020-06-16 | 中国矿业大学 | Coal bed permeability increasing method with ice particle abrasive jet flow slotting and microwave heat injection in cooperation |
| CN113818892A (en) * | 2021-07-29 | 2021-12-21 | 中国铁建重工集团股份有限公司 | Rock breaking and tunneling device and rock breaking method thereof |
| RU2779170C1 (en) * | 2022-03-23 | 2022-09-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Well drilling method in ice cover |
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Application publication date: 20170728 |