High-pressure and blowout resistant safety sealing wellhead protection device

Abstract

The invention relates to the technical field of protection devices, and discloses a high-pressure and blowout resistant safety sealing wellhead protection device. The high-pressure and blowout resistant safety sealing wellhead protection device comprises a wellhead pipe, wherein an installation sleeve is movably connected to the outer surface of the wellhead pipe in a clamped mode, a clamping ringis movably connected to the outer surface of the installation sleeve in a clamped mode, and a connecting rod is fixedly connected to the side surface of the clamping ring. According to the high-pressure and blowout resistant safety sealing wellhead protection device, the connecting rod is fixedly connected to the side surface of the clamping ring, an embedded rod is connected to an outer end of the connecting rod, so that the embedded rod is inserted into the ground, after the embedded rod is inserted into the ground, a threaded rod is rotated, so that the threaded rod drives a long plate atthe bottom of a sealing plate to move up while rotating and rising, a sleeve rod is rotated and lifted, thus rotating plates are pulled to rotate, the rotating plates on both sides of the embedded rodare turned to the outside, the grasping effect on the underground soil is improved, during impact of high pressure, with the grasping effect of the embedded rod, the protection device is prevented from rushing out directly, the installation stability is improved, and the using effect is good.

Description

technical field [0001] The invention relates to the technical field of protection devices, in particular to a high-pressure resistant blowout prevention safety sealing wellhead protection device. Background technique [0002] The blowout preventer is used to close the wellhead in the process of oil testing, workover, and completion to prevent blowout accidents. It combines the functions of full seal and half seal. It has the characteristics of simple structure, easy operation, and high pressure resistance. , is a safety sealing wellhead device commonly used in oilfields to prevent blowout. When used specifically, the blowout preventer is installed on the wellhead casing head. When the oil and gas pressure in the well is high, the blowout preventer can close the wellhead. When the heavy mud is pressed into the drill pipe, there is a four-way under the ram, which can replace the gas-invaded mud and increase the pressure of the inner liquid column. Suppress the jet of high-pre...

AI Technical Summary

Problems solved by technology

[0003] The existing blowout prevention wellhead protection device, in the process of use, because the protection device is directly installed on the upper part of the well pipe, in the actual use process, the pressure of oil and gas in the well is very high, and the protection device is released from the well during the upward jacking process. The pipe falls off, which damages the installation of the protection device and causes oil leakage. The leaked oil further pollutes the environment. It is difficult to reinstall the protection device, which is dangerous, reduces the oil recovery efficiency, and the use effect is not good.

[0004] In addition, during the use of the existing blowout wellhead protection device, when part of the pressure is not enough to directly push off the protection device, and the rapidly rising high pressure makes the movable plug in the protection device move quickly, the movable plug used for buffering The rapid impact on the protection device, the sudden sudden change in pressure will cause the protection device above the sealed wellhead to suddenly collide and explode, causing safety accidents, destroying on-site facilities, increasing economic expenditure, reducing oil recovery efficiency, and even damaging the wellhead, resulting in collapse accidents and poor use effects

[0005] On the other hand, the existing blowout wellhead protection device has a complex structure during use, and the actual installation process is troublesome, and it lacks effective positioning when the bolts are fixed, and it is difficult to install, maintain and detect. Affects the efficiency of disassembly and assembly, increases the labor expenditure of the operator, and the use effect is not good

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