Filling injection type energy saving wellhead sealing device

Abstract

The invention provides a filling injection type energy saving wellhead sealing device, which comprises a rolling bearing casing, an inflection point rolling bearing, an inclination regulation ball case seat, a sealing seat, a seal box casing, a pressure guide pipe, an inclination regulation sphere press cap, an inclination regulation sphere press ring, an injection pipe, a starting and closing switch, an energy storage casing, a pressurization supply spring, a pushing piston, a scale cleaning wire, a seal box casing sealing cap and a sealing and plugging cap. The filling injection type energysaving wellhead sealing device has the characteristics that the structure is simple; the design is reasonable; the use effect is good, and the like. The sealing materials can be added without well halt; various functions of eccentric wearing prevention, self scale cleaning, energy saving, polished rod protection and the like are integrated; the problems of oil wellhead sealing, safety and environment protection are solved.

Description

technical field [0001] The invention relates to the technical field of oil field sealing, in particular to a filling type energy-saving well head sealer suitable for rod type radial reciprocating motion sealing and oil well pumping well head sealing in oil fields. Background technique [0002] In the process of producing crude oil in the oil field, more than 90% of the oil wells use the pumping unit to reciprocate up and down to drive the sucker rod to transfer the kinetic energy to the downhole pump, and then the downhole pump lifts the crude oil to the ground to control the wellhead, and the crude oil enters through the control wellhead Gathering and transportation process to achieve the purpose of collecting crude oil. [0003] The control well head is equipped with a sealing device for the oil pumping rod. The traditional sealing device is to add a rubber gasket or a belt rib to the stuffing box, and squeeze the rubber gasket or belt rib to the pumping rod by external fo...

AI Technical Summary

Problems solved by technology

[0003] The control well head is equipped with a sealing device for the oil pumping rod. The traditional sealing device is to add a rubber gasket or a belt rib to the stuffing box, and squeeze the rubber gasket or belt rib to the pumping rod by external force. The purpose of sealing is achieved at the polished rod. The sealing method of the prior art has the problems of poor sealing performance, short sealing cycle, difficult maintenance for operators, and high labor intensity. Moreover, the sealing material wears heavily on the oil pumping polished rod during sealing. , while increasing the operating load of the pumping unit

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