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Drilling tool wellhead safety protection control device

A technology of safety protection and control device, which is applied to the automatic control system of drilling, drilling equipment, earth-moving drilling, etc., can solve the problems of wasting working time, unable to arrange the replacement of drilling tools, etc., so as to prevent breaking and improve work efficiency. Effect

Active Publication Date: 2014-05-07
CHENGDU ZHUOXIN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defect that the above-mentioned existing safety device cannot arrange drilling tool switching and other operations after closing the semi-sealed ram preventer, which wastes working time, the present invention provides a drilling tool wellhead safety protection control device for the above-mentioned defects. After the half-sealed ram BOP, the traveling block can still be moved, and drilling tools can be switched, which does not waste working time and improves work efficiency. While working, it can also prevent the drilling tools from being broken during lifting, effectively Drilling tools are protected

Method used

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  • Drilling tool wellhead safety protection control device
  • Drilling tool wellhead safety protection control device
  • Drilling tool wellhead safety protection control device

Examples

Experimental program
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Effect test

Embodiment 1

[0042] In this implementation, a hydraulic control valve 8, a normally closed air control device 18, a solenoid valve 9, a normally open air control device 14, a button valve 13 and a tee 12 are sequentially arranged on the air circuit 19 of the brake cylinder of the drilling rig. The air inlet of the three-way 12 is communicated with the button valve 13, and the other two exhaust ports are connected with the brake cylinder 11 of the anti-collision crane, and one is communicated with the brake cylinder 10 of the drilling rig; the button valve 13 is a three-way valve, The two openings are connected to the air circuit 19 of the brake cylinder 10 of the drilling rig, and the other opening is used for exhaust. Just press the button valve 13, and the compressed gas can be discharged from the button valve; the solenoid valve 9 is connected to the control system 15 , the normally open air control device 14, the normally closed air control device 18 and the pressure sensor 17 are all c...

Embodiment 2

[0045] In this embodiment, the difference from Embodiment 1 is that there are two solenoid valves 9, which are connected in parallel to the air circuit 19 of the brake cylinder of the drilling rig. The purpose is that when one of the solenoid valves 9 is damaged, the other solenoid valve is normal. Work without affecting the normal operation of the system, and it is also convenient for workers to replace the solenoid valve.

Embodiment 3

[0047] In this embodiment, the difference from Embodiment 1 is that there are three solenoid valves 9, which are connected in parallel to the air circuit 19 of the brake cylinder of the drilling rig.

[0048] Electromagnetic valve 9 can be multiple, is not limited to one to three, as long as it is connected in parallel on the air circuit 19 of the drilling rig brake cylinder.

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Abstract

The invention relates to a drilling tool wellhead safety protection control device. The device comprises a control system, electromagnetic valves, a pressure sensor, a drilling machine brake cylinder and hanging load meters, wherein the electromagnetic valves are arranged on the gas circuit of the drilling machine brake cylinder, the electromagnetic valves are in the normally-closed state; the electromagnetic valves and the pressure sensor are connected onto the control system, the hanging load meters are used for collecting the lifting load of a drilling tool, and connected onto the pressure sensor. According to the device, after a semi-closed ram preventer is closed, a traveling block can still be moved, and the operation such as drilling tool switching and the like can still be conducted, so that the working time is saved and the working efficiency is improved; meanwhile, the tensile failure of the drilling tool can be prevented during lifting while the drilling tool works, so that the drilling tool can be protected effectively.

Description

technical field [0001] The invention belongs to the field of petroleum well control, and in particular relates to an automatic control system which can safely perform operations such as drilling tool switching without breaking the drilling tool after the semi-sealed ram blowout preventer is closed. Background technique [0002] In the field of oil well control, semi-sealed ram blowout preventers and safety devices are installed at the wellhead. The gas circuit is disconnected through the control valve of the safety device to control the reset of the high and low speed clutch of the drawworks, preventing the pressure regulating valve from entering the air, and the high The low-speed clutch cannot be engaged, and the hook of the traveling block cannot be lifted, thereby achieving the purpose of preventing the drilling tool from being lifted to the half-sealed ram and being hung up. [0003] The authorized announcement number is CN202788794U, and the authorized announcement dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B44/02
Inventor 陈伦俊罗琼英徐家熊池振华张丽
Owner CHENGDU ZHUOXIN IND
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