Friction reducing and shock reducing automatic rotary device for oil well pole

Abstract

The present invention relates to a well rod string antifriction vibration-reducing automatic rotator. It includes the following several portions: shell body, speed-reducer, spring, piston, break-out block and one-way engagement device. Said invention also provides the connection mode of all the above-mentioned portions and the basic working principle of said automatic rotator.

Description

technical field [0001] The invention belongs to the technical field of oil collection equipment, and relates to an anti-eccentric wear technology in oil extraction with a rod pump, in particular to an anti-friction and vibration-reducing automatic rotator for an oil well rod string. Background technique [0002] The pumping unit is a kind of oil production equipment commonly used in the oil production process of the oil field. The oil well rod string connected by the machine should extend into the oil well of the oil layer 2 to 5 kilometers underground, and continuously pump up and down in the oil well. , to pump out the oil in the ground. The oil wells stretching into the ground 2-5 kilometers all have bending problems in varying degrees during the drilling process, especially deviated wells and horizontal wells are all artificially manufactured inclinations when drilling. Then in the process of its twitching, the oil well rod will inevitably rub against the curved inner w...

AI Technical Summary

Problems solved by technology

This kind of eccentric wear greatly reduces the service life of the oil well rod string. In order to slow down this wear, the current method is to install different types of centralizers on the oil well rod string to achieve the purpose of protecting the oil well rod string. The eccentric wear of the pole column has not been well resolved

The method of artificially rotating the oil well rod is also adopted: firstly, the pumping unit must be turned off, and then the oil well rod is twisted with a pipe wrench to rotate the oil well rod by an angle to change the eccentric wear position, so as to reduce the eccentric wear at a certain position, thereby Increase the service life of the oil well rod string, but the above method has the following defects that are difficult to overcome: 1) it is easy to cause personal injury, and the safety is poor. When the oil well rod string is manually rotated, the relative speed is fast. Large, because the oil well rod string is 2 to 5 kilometers long, and in the static state, the oil well rod string cannot rotate at the same angle, so that the internal stress torque generated in the oil well rod string is difficult to disappear in a short time. Once there is a chance of release, it will cause personal injury accidents; 2) because the curved oil well rod string is 2 to 5 kilometers long, and there is an oil well pump at the bottom, it is difficult to rotate the oil well rod string with tools, and it will be sprained if the angle is large Rod strings, causing broken rods, or the threaded connection of adjacent oil rods loosening or even falling off, causing mechanical failures and damaging the oil well rod strings; 3) Frequent shutdown of pumping units wastes energy, reduces oil production, and affects production efficiency; 4 ) is labor-intensive, difficult to operate, and the resulting wear leveling effect is not good

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