Anti-blocking and anti-deflection tubular oil-well pump

Abstract

The invention discloses an anti-blocking and anti-deflection tubular oil-well pump. The tubular oil-well pump comprises a bushing, a plunger, a pump bucket, an oil pipe and a straightening joint hoop,wherein the oil pipe is arranged in the bushing, the pump bucket is arranged at the bottom of the oil pipe, a second valve seat is arranged in the pump bucket, a second through hole is formed in themiddle of the second valve seat, and a second valve ball is arranged above the second through hole; the plunger is inserted into the pump bucket, the straightening joint hoop is arranged between the plunger and the inner wall of the oil pipe, a first valve seat is arranged in the plunger, a first through hole is formed in the first valve seat, and a first valve ball is arranged above the first through hole; and a first rotational flow structure and a second rotational flow are respectively arranged above the first valve ball and the second valve ball. The anti-blocking and anti-deflection tubular oil-well pump is reasonable in structural design; by arranging the straightening node hoop and a straightening body, the plunger is conveniently straightened, and the situation that the plunger isdeflected to strike the edge the pump bucket is prevented; and by utilizing the rotational flow structures, to-be-sucked crude oil can form vortexes, and coal powder or sand is suspended in liquid flow and is taken away, so that the blockage of the pump is prevented.

Description

technical field [0001] The invention relates to an oil well pump, in particular to an anti-blocking and anti-deviation tube type oil well pump. Background technique [0002] During the production process of oil wells, pump jam failures often occur. Pump jam failure means that the piston is stuck in the pump barrel and cannot move back and forth, or the piston cannot enter the pump barrel. The main reasons can be divided into two situations: one is Iron filings are stuck in the pump. During workover operations, workers use pipe tongs or hydraulic tongs to twist the oil rod or oil pipe. Because high torque is required to rotate the screw thread, it is very easy to drop iron filings. Once the iron filings fall into the In the oil pipe, it can only enter the pump barrel; the second is that the sediment is stuck in the pump, and the sediment is mainly sediment and coal powder at the bottom of the well; various sediments enter the pump barrel together with the oil, and are continu...

AI Technical Summary

Problems solved by technology

[0002] During the production process of oil wells, pump jam failures often occur. Pump jam failure means that the piston is stuck in the pump barrel and cannot move back and forth, or the piston cannot enter the pump barrel. The main reasons can be divided into two situations: one is Iron filings are stuck in the pump. During workover operations, workers use pipe tongs or hydraulic tongs to twist the oil rod or oil pipe. Because high torque is required to rotate the screw thread, it is very easy to drop iron filings. Once the iron filings fall into the In the oil pipe, it can only enter the pump barrel; the second is that the sediment is stuck in the pump, and the sediment is mainly sediment and coal powder at the bottom of the well; various sediments enter the pump barrel together with the oil, and are continuously lifted. The rising sediment and iron filings lose their upward momentum, and the specific gravity is greater than that of the oil, which will naturally sink into the pump barrel and block the pump barrel, causing the pump to get stuck.

Moreover, when the oil pump is working, it will vibrate, and the plunger is easy to deviate and hit the edge of the pump barrel.

Images