WO2020151208A1 - Machine de forage anti-dégagement instantané à détente de pression - Google Patents

Machine de forage anti-dégagement instantané à détente de pression Download PDF

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Publication number
WO2020151208A1
WO2020151208A1 PCT/CN2019/096404 CN2019096404W WO2020151208A1 WO 2020151208 A1 WO2020151208 A1 WO 2020151208A1 CN 2019096404 W CN2019096404 W CN 2019096404W WO 2020151208 A1 WO2020151208 A1 WO 2020151208A1
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WO
WIPO (PCT)
Prior art keywords
pressure relief
drill
drill rod
channel
sub
Prior art date
Application number
PCT/CN2019/096404
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English (en)
Chinese (zh)
Inventor
王磊
袁秋鹏
袁安营
Original Assignee
安徽理工大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 安徽理工大学 filed Critical 安徽理工大学
Publication of WO2020151208A1 publication Critical patent/WO2020151208A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02—Automatic control of the tool feed
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/04—Safety devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices

Definitions

  • the invention relates to the technical field of coal mining, in particular to a pressure relief and anti-outburst drilling rig.
  • the invention provides a pressure relief and anti-outburst drilling rig, which can prevent gas at the bottom of a hole from exceeding the limit, relieve pressure in time, prevent accidents such as spray holes and stuck drills, and effectively ensure the safe construction of coal seam drilling.
  • the present invention provides a pressure relief and anti-outburst drilling rig, which includes a drill rod, a motor that drives the drill rod to rotate, and a drill bit arranged at the end of the drill rod.
  • the drill rod is provided with an air inlet channel and a discharge channel.
  • a pressure relief channel, a pressure relief valve is arranged in the pressure relief channel, a pressure relief hole matched with the pressure relief valve is opened on the drill rod, and the pressure relief channel is connected to a gas exhaust pipe through an external exhaust pipe
  • a pipeline is collected, and the exhaust pipeline is provided with a gas flow meter for monitoring the gas flow.
  • the air inlet passage is a circular hole formed along the axis of the drill rod coaxial with the drill rod, and the pressure relief passage includes a plurality of mutually independent openings around the air inlet passage.
  • Sub-pressure relief channels, each of the sub-pressure relief channels is provided with the pressure relief valve and the pressure relief hole.
  • a plurality of the sub-pressure relief channels are symmetrically arranged around the air inlet channel.
  • the drill rod is formed by connecting multiple sub-drill rods in series.
  • a plurality of the sub-drill rods are connected by threads.
  • the pressure relief hole is opened on the sub-drill rod adjacent to the drill bit, and the pressure relief hole is a hole that is vertically opened from the outer wall of the drill rod to the pressure relief channel.
  • the gas flow meter is provided with a monitoring device for reading data and a reminding device for issuing an alarm when the value read exceeds a preset value threshold.
  • a pressure relief channel is provided, and a pressure relief valve is arranged in the pressure relief channel.
  • the pressure in the borehole exceeds the pressure threshold, the gas concentration at the bottom of the hole during the drilling process is actively reduced in time, so as to prevent the gas from exceeding the limit and prevent the spray hole It can gradually reduce the gas concentration in the borehole, prevent a large amount of sudden gas movement, set up a gas flowmeter on the exhaust pipe connected to the pressure relief channel to monitor the current gas flow, and replace the drill pipe in time according to the current gas pressure. , Effectively guarantee the safe construction of coal seam drilling.
  • Figure 1 is a cross-sectional view of the internal structure of a pressure relief and anti-outburst drill provided by an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of the internal structure of a drill rod of a pressure relief and anti-outburst drill provided by an embodiment of the present invention
  • Fig. 3 is an I-I sectional view of a drill rod of a pressure relief and anti-outburst drill provided by an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view of the internal structure of a pressure relief and anti-outburst drill provided by the first embodiment of the present invention, which includes a drill rod 1, a motor 6 that drives the drill rod 1 to rotate, and a drill bit 7 provided at the end of the drill rod 1.
  • the drill pipe 1 is provided with an air inlet channel 2 and a pressure relief channel 3, a pressure relief valve 4 is provided in the pressure relief channel 3, a pressure relief hole 5 matched with a pressure relief valve, and a pressure relief channel 3 are opened on the drill pipe 1
  • An external exhaust pipe 8 is connected to the gas extraction pipe, and the exhaust pipe 8 is provided with a gas flow meter 9 for monitoring the gas flow.
  • a gas flow meter 9 is installed on the exhaust pipe 8 external to the pressure relief channel 3 to monitor the current gas flow.
  • the gas flow corresponds to the gas pressure in the borehole.
  • the gas flow in the pressure relief channel 3 can be adjusted by drilling the drill pipe 1 with a larger pressure relief valve threshold, and the pressure can be gradually relieved to prevent the sudden movement of a large amount of gas from causing damage to equipment and personnel, and completely eliminate it Hidden dangers of nozzle holes.
  • the threshold of the pressure relief valve 4 can be selected, for example, 0.1MPa, 0.3MPa, 0.5MPa, 0.7MPa, etc., and the pressure relief valve 4 that matches the threshold can be selected according to specific needs, which can effectively avoid the occurrence of nozzle holes. .
  • a gas flow meter is installed on the exhaust pipe connected to the pressure relief channel to monitor the current gas flow, and the drill pipe can be replaced in time according to the current gas pressure. Effectively ensure the safe construction of coal seam drilling.
  • the air inlet channel 2 is a circular hole formed along the axis of the drill rod 1 coaxial with the drill rod 1, and the pressure relief channel 3 includes a plurality of air inlet channels 2
  • the sub-pressure relief passages 31 are independent of each other around, and each sub-pressure relief passage 31 is provided with a pressure relief valve 4 and a pressure relief hole 5.
  • the plurality of sub-pressure relief channels 31 are symmetrically arranged around the air inlet channel 2.
  • FIG. 3 there may be, for example, two sub-pressure relief channels 31, which are located symmetrically on both sides of the air inlet channel 2.
  • the sub-pressure relief channels 31 are symmetrically arranged around the air inlet channel 2, so that the drill The pressure discharge in the hole is more even, and the stability of the drill pipe drilling is improved.
  • four sub-pressure relief channels 31 or more may be used, and the specific number is set according to actual needs.
  • the drill rod 1 is formed by connecting a plurality of sub-drill rods 11 in series.
  • the multiple sub-drill rods 11 are connected by threads.
  • the drill rod 1 is formed by connecting a plurality of sub-drill rods 11 in series, which can be spliced according to specific drilling length needs to improve the flexibility of on-site response.
  • the sub-drill rods 11 may be connected by threads, for example.
  • the pressure relief hole 5 is opened on the sub-drill rod 11 adjacent to the drill bit 7, and the pressure relief hole 5 is a hole that is vertically opened from the outer wall of the drill pipe 1 to the pressure relief channel 3.
  • the pressure relief hole 5 is opened on the sub-drill rod 11 adjacent to the drill bit 7, which can effectively discharge the gas in the borehole out of the borehole, avoiding the secondary accumulation of gas in the borehole and affecting the drilling effect.
  • the gas flow meter 9 is provided with a monitoring device (not shown in the figure) for reading data and a reminding device (not shown in the figure) that sends an alarm when the value read exceeds a preset value threshold. ).
  • a sound or light-emitting module can be set to realize the reminder function, and an automatic control device can also be set to automatically pull out the drill pipe when the monitoring device detects that the reading exceeds the preset value threshold, so as to maximize the satisfaction. construction safety.

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  • 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)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne une machine de forage anti-dégagement instantané à détente de pression, comprenant une tige de forage (1), un moteur (6) entraînant la rotation de la tige de forage (1) et un trépan (7) disposé à l'extrémité de la tige de forage (1), un canal d'entrée d'air (2) et un canal de détente de pression (3) étant formés dans la tige de forage (1), une soupape de détente de pression (4) étant disposée dans le canal de détente de pression (3), un trou de détente de pression (5) mis en correspondance avec la soupape de détente de pression (4) étant formé sur la tige de forage (1), le canal de détente de pression (3) étant relié à une conduite d'extraction de gaz par l'intermédiaire d'une conduite d'échappement externe (8), et un débitmètre de gaz (9) utilisé pour surveiller l'écoulement de gaz étant disposé sur la conduite d'échappement (8).
PCT/CN2019/096404 2019-01-25 2019-07-17 Machine de forage anti-dégagement instantané à détente de pression WO2020151208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910072459.5A CN109611072A (zh) 2019-01-25 2019-01-25 一种卸压防突钻机
CN201910072459.5 2019-01-25

Publications (1)

Publication Number Publication Date
WO2020151208A1 true WO2020151208A1 (fr) 2020-07-30

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ID=66018288

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Application Number Title Priority Date Filing Date
PCT/CN2019/096404 WO2020151208A1 (fr) 2019-01-25 2019-07-17 Machine de forage anti-dégagement instantané à détente de pression

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CN (1) CN109611072A (fr)
WO (1) WO2020151208A1 (fr)
ZA (1) ZA202000362B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611072A (zh) * 2019-01-25 2019-04-12 安徽理工大学 一种卸压防突钻机
CN109653689A (zh) * 2019-01-25 2019-04-19 安徽理工大学 一种导流钻杆

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544208A (en) * 1984-07-23 1985-10-01 Concoco Inc. Degasification of coal
CN101446178A (zh) * 2008-11-13 2009-06-03 煤炭科学研究总院西安研究院 井下松软突出煤层中风压空气钻进装备及配套工艺
CN202017459U (zh) * 2011-04-18 2011-10-26 崔钢明 具有双排粉通道的钻杆
CN204782970U (zh) * 2015-07-15 2015-11-18 河南理工大学 一种低透气性煤层水力割缝系统
CN105485387A (zh) * 2016-01-05 2016-04-13 淮南市矿用电子技术研究所 一种分级导流卸压阀及其安装使用方法
CN109611072A (zh) * 2019-01-25 2019-04-12 安徽理工大学 一种卸压防突钻机
CN109653689A (zh) * 2019-01-25 2019-04-19 安徽理工大学 一种导流钻杆

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544208A (en) * 1984-07-23 1985-10-01 Concoco Inc. Degasification of coal
CN101446178A (zh) * 2008-11-13 2009-06-03 煤炭科学研究总院西安研究院 井下松软突出煤层中风压空气钻进装备及配套工艺
CN202017459U (zh) * 2011-04-18 2011-10-26 崔钢明 具有双排粉通道的钻杆
CN204782970U (zh) * 2015-07-15 2015-11-18 河南理工大学 一种低透气性煤层水力割缝系统
CN105485387A (zh) * 2016-01-05 2016-04-13 淮南市矿用电子技术研究所 一种分级导流卸压阀及其安装使用方法
CN109611072A (zh) * 2019-01-25 2019-04-12 安徽理工大学 一种卸压防突钻机
CN109653689A (zh) * 2019-01-25 2019-04-19 安徽理工大学 一种导流钻杆

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CN109611072A (zh) 2019-04-12
ZA202000362B (en) 2020-12-23

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