CN2037772U - Overlaid-ball type guide for oil-extracting rod - Google Patents

Abstract

The utility model discloses an overlaid-ball type guide for oil-extracting rod, which reduces the abrasion between the pumping rod of the oilfield well pumping unit and the pipe wall of the oil pipe. The overlaid-ball type guide for oil-extracting rod is mainly characterized in that a ball bearing is arranged on the pumping rod and the circular direction of the connecting coupling body, which changes the sliding friction of the pipe wall and the pumping rod in seesaw motion to rolling friction, abrasion, wobbling and pounding between the pipe wall of the oil pipe and the pumping rod is reduced, the availability factor of the pumping unit is improved, and the service life is prolonged.

Description

Overlaid-ball type guide for oil-extracting rod

The utility model relates to the protective device on a kind of oilfield pumping well sucker rod.

On the oil field, pump, underground crude oil is extracted out in a steady stream hourly by ground power-equipment drive down-hole sucker rod, plunger displacement pump; In sucker rod pumps, sucker rod can vibrate, wave phenomenon, the inclination of pit shaft or bending in addition produces friction between sucker rod and pit shaft tubing wall, cause down-hole plunger displacement pump bumpy motion, sucker rod load is strengthened, reduce device efficiency and application life, may cause that also disconnected bar falls the pump phenomenon, influences the ordinary production in oil field, based on this shape, the utility model is proposed.

The purpose of this utility model: for reducing the friction between sucker rod and tubing wall, avoid sucker rod produce excessive vibration, wave and and tubing wall between bump, improve pumping unit service efficiency and life-span;

The purpose of this utility model can solve by following technical solution: in sucker rod week the ball-type guider is housed upwards, sucker rod is pumped in oil pipe in the process substantially near the axis, both avoided sucker rod produce excessive vibration, swing and and tubing wall between bump, wearing and tearing between having subtracted again, the service efficiency that can improve pumping unit with increase the service life.

To be described in more detail the utility model below in conjunction with accompanying drawing:

Figure a is an overcoat ball-type sucker rod guide axle side diagrammatic sketch:

Figure b is an overcoat ball-type sucker rod guide section of structure;

Shown in figure, upwards fixedly mount the ball-type guider in sucker rod [1] week, be ball bearing, it is made up of ball [2], pearl frame [3], interior steel bushing [4], be fixed on sucker rod [1] or the box cupling ectosome with screw [6], well well bore situation can be taken out according to oil field oil machine in its number and installation site, is decided by design.

The utility model implementation result: adopt the design, can make sucker rod [1] in pumping and the sliding friction of tube wall become rolling friction and significantly reduce friction between sucker rod and the oil pipe, reduce the load of sucker rod, increase effective travel: also avoid simultaneously producing excessive wave and and tubing wall between bump, improve the pumping unit service efficiency and increase the service life.

Claims (1)

1. the utility model relates to a kind of oilfield pumping well overcoat ball-type sucker rod guide that is used for, and it is characterized in that: upwards adorn a ball-type guider in sucker rod [1] week;

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