Anti-single lifting ring device

Abstract

The invention discloses an anti-single ring device, which is characterized in that a signal transmitter is inlaid in an elevator pin, two one-way air switches are connected in series on the control pipeline of a low-speed air bag of a drilling rig, and the handles of the two one-way air switches are respectively Equipped with signal receivers for receiving signals from the signal transmitters on the left and right elevator pins, and the signal transmitters embedded in the two elevator pins are disturbed once when they are pulled out or inserted into the pin holes of the elevator pins The principle is to control the cut-off or intake of the low-speed airbag of the drilling rig, that is, when the elevator pin is pulled out, the control air source of the low-speed airbag is cut off, so that the low-speed drum of the drilling rig can The principle that the low-speed airbag can be activated to control the air source after the two elevator pins are inserted into the pin holes of the left and right elevators can prevent the occurrence of single-elevator accidents. When drilling out, turn on the power of the anti-single lifting ring device and interfere with the signal transmitter embedded in the left and right elevator pins once by hand.

Description

technical field [0001] The invention relates to the prevention of single-ring accidents during tripping operations such as oil drilling, workover and tripping, casing tripping and the like. Background technique [0002] During oil drilling and workover with double elevators, the driller’s sight is blocked when the workers at the wellhead position are operating, and the driller may directly hang the two lifting rings in the ears of the elevators when the workers at the position do not hang them into the elevator ears. The low-speed clutch pulls out the drill, and lifts the elevator hanging the pipe string in the well with a single lifting ring. Due to the one-way force of the elevator, the hoisted pipe string is bent or broken under its own weight, causing the pipe string to fall into the well or injure personnel. , equipment and other single ring accidents, there is a great potential safety hazard. Contents of the invention [0003] Aiming at the safety hazards of single-...

AI Technical Summary

Problems solved by technology

[0002] During oil drilling and workover with double elevators, the driller’s sight is blocked when the workers at the wellhead position are operating, and the driller may directly hang the two lifting rings in the ears of the elevators when the workers at the position do not hang them into the ears of the elevators. The low-speed clutch pulls out the drill, and lifts the elevator hanging the pipe string in the well with a single lifting ring. Because the elevator is under one-way force, the hoisted pipe string is bent or broken under its own weight, causing the pipe string to fall into the well or injure personnel. , equipment and other single ring accidents, there is a great potential safety hazard

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