A Synchronous Wellhead Seal Adjustment Device

Abstract

The invention provides a synchronization wellhead adjusting and sealing device. The synchronization wellhead adjusting and sealing device comprises a lower connector, an offset adjusting sleeve is arranged on the upper face of the lower connector, the offset adjusting sleeve is connected with a connector in a threaded mode, and the connector is connected with a blowout control welding body in a threaded mode. The inner conical surface of the connector corresponds to the inner conical surface of the blowout control welding body to form an annular space, and a blowout control guiding body is arranged in the annular space. A blowout control ball is mounted in a U-shaped groove of the annular space. The blowout control welding body is connected with a shell, a sealing ring c, a rubber sheet core, a semicircular pressing plate, a flat pressing plate, a hexagon bolt and a core body are arranged in an inner cavity of the shell, and accordingly a sealing piston is formed. The sealing piston is connected with a clamping jaw guiding body, a plane driving disc is mounted in an annular groove of the disc shell, an upper wrench enables plane threads of the plane driving disc to rotate and is in meshing driving with clamping jaws, and the two clamping jaws are clamped on a sealing piston groove. The synchronization wellhead adjusting and sealing device has the advantages of being high in synchronization sealing property, good in forced well sealing effect, good in offset adjusting effect, safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of oil production wellheads, in particular to a synchronous wellhead seal adjustment device. Background technique [0002] The polished rod of the pumping well is sealed by sealing packing. After the sealing packing is worn, the pressure in the oil well will carry the oil and gas in the well to emerge from the packing box, polluting the wellhead or the well site. Currently used rubber valves and well sealing devices are required to close the valves from both ends and cannot be carried out at the same time, resulting in uneven sealing force on the polished rod, resulting in poor sealing of the wellhead and inconvenient operation for employees. Due to the misalignment of the donkey head of the pumping unit and the center of the wellhead during the installation of the wellhead, the serious deformation of the casing due to the relatively long oilfield development and the relatively large temperature difference i...

AI Technical Summary

Problems solved by technology

Currently used rubber valves and well sealers are required to close the valves from both ends and cannot be performed at the same time, resulting in uneven sealing force on the polished rod, resulting in poor sealing of the wellhead and inconvenient operation for employees

Due to the misalignment of the donkey head of the pumping unit and the center of the wellhead during the installation of the wellhead, the serious deformation of the casing due to the relatively long oilfield development and the relatively large temperature difference in the Northeast, resulting in serious wear of the polished rod, and the phenomenon of oil well breakage occurred from time to time. cause serious environmental pollution

There are mainly several deficiencies: 1. The wellhead cannot be sealed synchronously; 2. The well sealing effect is not good, causing serious pollution; 3. The wellhead plane does not have the function of deflection adjustment, which causes partial wear of the polished rod

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