Anti-dropping and sealing and anti-sprayinghead, and anti-spraying device

Abstract

The embodiment of the invention provides an anti-dropping and sealing and anti-spraying head, and an anti-spraying device, and relates to the field of petroleum machinery. The anti-dropping and sealing and anti-spraying head includes a shell, a lifting rope, an anti-dropping component and a sealing component, the sealing component includes a mandrel, and the anti-dropping component includes a caphook, a rope cap head and a limit joint. The mandrel is arranged in the shell and is movably connected with the shell. The cap hook is fixedly connected with the mandrel, and the limit joint sleeves the cap hook and fixedly connected with the shell. The lifting rope penetrates through the mandrel and the cap hook, and is connected with the rope cap head. The rope cap head can optionally enter thelimit joint and be clamped to the cap hook. Once the lifting rope breaks, the rope cap head can enter into the limit joint and be clamped to the cap hook, so the cap head and objects connected with the rope cap head are prevented from falling, the trouble of salving is reduced, and taking and placing objects are convenient.

Description

technical field [0001] The invention relates to the technical field of petroleum machinery, in particular to a blowout prevention head and a blowout prevention device for an anti-drop seal. Background technique [0002] After research, it is found that in order to prevent the tester from falling into the bottom of the well, the tester is usually provided with a drop preventer at the wellhead. For example, the drop preventer can be a mechanical baffle arranged under the tester, through which the channel can be closed and opened, and the tester can be prevented from falling after the channel is closed. [0003] However, this method of adding an anti-dropping device at the wellhead requires a separate anti-dropping device, which will increase the handling and disassembly work of the workers, bring additional workload, and require manual operation to realize the work of the anti-dropping device to prevent If the tester falls, the fall prevention may not be timely. Contents of...

AI Technical Summary

Problems solved by technology

[0003] However, this method of adding an anti-dropping device at the wellhead requires a separate anti-dropping device, which will increase the handling and disassembly work of the workers, bring additional workload, and require manual operation to realize the work of the anti-dropping device to prevent If the tester falls, the anti-drop may not be timely

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