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Screw pump ground driven slips anti-releasing device

A technology of anti-dropping device and oil pump, which is applied to drill pipe, drilling equipment, earth-moving drilling and production, etc., can solve the problems of well site accident, slip separation, slip up channeling, etc. The effect of running away from the main shaft and preventing well site accidents

Active Publication Date: 2009-10-21
TIANJIN LILIN GASOLINEEUM MACHINERY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] In the existing technology, such as figure 2 and image 3 As shown, since the slips are clamped downwards on the upper end of the main shaft relying on gravity, when the downhole pressure is high or the pressure is unstable, the rotor in the screw pump often moves up and down, driving the sucker rod and the polished rod to move upward, resulting in stuck Slips often appear to slip upwards, and in severe cases, slips will slip upwards and break away from the drive of the main shaft, resulting in accidents at the well site

Method used

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  • Screw pump ground driven slips anti-releasing device
  • Screw pump ground driven slips anti-releasing device
  • Screw pump ground driven slips anti-releasing device

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] Such as figure 1 As shown, in the ground-driven slip prevention device of the screw oil well pump related to the present invention, two symmetrically arranged hooks (5) are fixed on both sides of the slips (6), and are respectively arranged on the symmetrical sides of the upper end of the main shaft (4). There are grooves (3), and the hook ends of the two hooks (5) are locked in the corresponding grooves (3).

[0012] In the embodiment of the present invention, the two hooks (5) are fixed on both sides of the slips (6) by fastening bolts (2).

[0013] The above description is only an embodiment of the present invention, and may not be used to limit the protection scope of the present invention.

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Abstract

The ground-driven slip prevention device of the screw oil well pump of the present invention has two symmetrically arranged hooks fixed on both sides of the slips, grooves are respectively arranged on the symmetrical sides of the upper end of the main shaft, and the hook ends of the two hooks are The clamping position is in the corresponding groove. This technical solution can not only effectively prevent the slips from moving up and off the main shaft, but also prevent the well site accidents caused by this. The original design structure of the device basically does not change, and the modification is simple and convenient. It is convenient and effective in use.

Description

technical field [0001] The invention relates to a ground drive device for an oil well pump, in particular to a ground drive slip prevention device for a screw oil well pump. Background technique [0002] In the existing technology, such as figure 2 and image 3 As shown, since the slips are clamped downwards on the upper end of the main shaft relying on gravity, when the downhole pressure is high or the pressure is unstable, the rotor in the screw pump often moves up and down, driving the sucker rod and the polished rod to move upward, resulting in stuck Slips often appear upwards, and in severe cases, slips may escape from the drive of the main shaft and cause accidents at the well site. Contents of the invention [0003] The purpose of the present invention is to provide a ground-driven slip prevention device for screw oil well pumps. Through this technical proposal, it can not only effectively prevent the upper slips from slipping off the main shaft, but also eliminat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/10
Inventor 王春生张金江孙会权
Owner TIANJIN LILIN GASOLINEEUM MACHINERY
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