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Automatic control system and method for drilling blowout prevention

An automatic control and blowout prevention technology, applied in earthwork drilling, borehole/well valve device, measurement, etc., can solve problems such as system complexity, achieve simple and convenient operation, avoid gas overrun, speed up and accuracy Effect

Inactive Publication Date: 2022-06-28
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to prevent the driver from making mistakes, an airbag is installed on the gas pipeline as a buffer, which makes the whole system more complicated

Method used

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  • Automatic control system and method for drilling blowout prevention
  • Automatic control system and method for drilling blowout prevention
  • Automatic control system and method for drilling blowout prevention

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, one embodiment of the present invention is further described:

[0021] The drilling blowout prevention automatic control system of the present invention includes a slag removal water tank, a blowout prevention box, a drilling rig, a PLC intelligent control cabinet 2, a network switch 6 and a coal mine information management and control platform 7, and an orifice blowout prevention is set at the selected drilling position. Device 1, the orifice blowout preventer 1 includes a spool 9 and an orifice casing 8 connected to the spool 9 whose front orifice extends into the coal formation, and the rear orifice of the spool 9 There is a drill pipe that passes through the orifice casing 8 from the spool 9 and enters the coal rock layer. The nozzle is connected with an upper suction pipe 10 for discharging gas; a pressure sensor 3 connected to the PLC intelligent control cabinet 2 by wires is provided at the connection of the four-wa...

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Abstract

The drilling blowout prevention automatic control system comprises a slag removal water tank, a blowout prevention box, a drilling machine, a PLC intelligent control cabinet, a network switch and a coal mine information management and control platform, an orifice blowout prevention device is arranged at a selected drilling position, and a pressure sensor connected with the PLC intelligent control cabinet through a wire is arranged at the position, close to an orifice sleeve, of the orifice blowout prevention device; an electric gate valve connected with the PLC intelligent control cabinet through a wire is arranged on an inlet pipe, connected with the gas extraction main pipeline, of the slag removal water tank, information transmission is conducted between the pressure sensor and the electric gate valve through the PLC intelligent control cabinet, and the electric gate valve can act in time when gas is jetted out, so that the jetted gas is rapidly discharged. And the accident record is transmitted to the coal mine information management and control platform through the network switch. The problems that according to an existing drilling blowout prevention technology, the reaction speed is low, and drilling site gas overrun is likely to be caused are solved. The device is easy and convenient to operate, high in practicability, low in cost and capable of rapidly and accurately coping with power phenomena such as drilling and hole spraying, and accident losses are reduced.

Description

technical field [0001] The invention relates to an automatic control system and method for drilling blowout prevention, in particular to a system and method for reducing the damage of dynamic phenomena such as drilling blowout holes in the process of underground drilling in coal mines. Background technique [0002] When drilling out of the coal seam, coal and gas are often ejected from the borehole, that is, the phenomenon of injection holes occurs. Nozzle holes will cause the gas concentration at the work site to exceed the limit for a long time, and there is a danger of explosion. The ejected cinder is easy to hurt people, and when the ejected amount is large, it may also bury the mining equipment and block the roadway. In addition, the long-term gas concentration exceeds the limit, which makes the drilling efficiency low, and the drilling time is long, which greatly affects the progress of the work. Therefore, the phenomenon of drilling and blowing holes is a serious th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21F17/18E21B47/06E21B33/06E21B34/02
CPCE21F7/00E21F17/18E21B47/06E21B33/06E21B34/02
Inventor 王海锋曹腾跃商政郝晓锐王志元陈平吕鹏飞施张泽
Owner CHINA UNIV OF MINING & TECH
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