Polarization-regulating energy-saving vertical sealing device

Abstract

The invention belongs to the technical field of oil production equipment and particularly relates to a polarization-regulating energy-saving vertical sealing device. The device comprises a polished rod sealing device and a sealing device, a sucker rod is worn in the middle of the polished rod sealing device and the sealing device; the polished rod sealing device comprises an adjusting sleeve, a packing gland, a packing root, a supporting ring and a packing case, and the inner side of the upper end of the packing gland is provided with an inner stopper. The inner stopper is provided with a feltfor storing lubricating grease. The adjusting sleeve is provided with an oil hole sealing device corresponding to the felt. The sealing device comprises a driving sleeve, a press sleeve, a rubber sleeve and a lower joint. The partial energy-saving vertical sealing device subverts the radial sealing pattern of an existing sealing device, and adopts a vertical sealing pattern, which completely solves the problem that the wellhead sealing is not tight due to uneven force of the sucker rod in the existing sealing device, and the operation is also simpler.

Description

technical field [0001] The invention belongs to the field of oil production equipment in oilfields, and in particular relates to a vertical well sealing device for deviation adjustment and energy saving. Background technique [0002] The pumping unit is the most commonly used oil extraction machine in the oil field production process. In order to prevent the downhole liquid from leaking from around the oil pumping rod to the ground, a well sealer is installed at the wellhead of the pumping unit well. The well sealing device usually includes two parts: the polished rod sealing device and the well sealing device: the function of the polished rod sealing device is to seal the oil pumping polished rod reciprocating up and down when the pumping unit is working, and the function of the sealing device is to replace the seal Seal the stationary polished oil rod. There are many types of existing sealing devices, but all have significant defects: 1) In the existing sealing devices, t...

AI Technical Summary

Problems solved by technology

There are many kinds of existing sealing devices, but all have significant defects: 1) In the existing sealing devices, the friction between the packing in the polished rod sealing device and the polished rod of the oil pumping is relatively large, not only the packing wears fast, And increase the power consumption when the pumping unit works

2) In the existing well sealing devices, most of the sealing devices adopt the structural form of radial well sealing. In this structural form, the sealing valve needs to close two valve cores from both sides of the oil pumping rod at the same time to ensure better sealing. However, in production practice, it is difficult to ensure that the two valve cores are closed at the same time, which leads to uneven sealing force on the oil pumping rod and poor sealing of the wellhead.

In addition, this structural form obviously has the problem of inconvenient operation

Images