Oil well sucker rod pump oil pumping completion tubular pile plugging device with pressure

Abstract

The invention relates to a rod pumping well completion string plugging device of an oil-well operating under pressure, and the rod pumping well completion string plugging device comprises an adjusting core axle, a coupling, an upper connector, an upper piston, a locking nut, a drop bar, an oil tube, a lower connector, a lower piston, a screen tube, a screwed plug and an oil well pump. The lower end of the oil well pump is connected with the coupling, the upper connector, the coupling, the oil tube, the coupling, the lower connector, the coupling, the screen tube and the screwed plug in sequence, the upper piston is fixed in the upper connector through an upper shear pin, the adjusting core axle is arranged in the upper piston, the upper end of the core axle is propped up the oil well pump to fix a valve ball, the lower end is connected with the drop bar through the locking nut, the drop bar is positioned in the oil tube, and the lower piston is fixed in the lower connected via a lower shear pin. The invention has the advantages that the installation is convenient, the sealing pressure is high, the success ratio of forming an oil inlet channel with pressure is high, the construction difficulty is reduced, and the invention is widely applied to the petroleum recovery as well as the rework operation process.

Description

1. Technical field [0001] The invention relates to well workover equipment in the petroleum industry, in particular to a plugging device for rod pump oil well completion pipe string for oil well pressure operation. 2. Background technology [0002] One of the difficult problems to be solved in the oil well under pressure operation is to realize the internal plugging of the rod pump completion string. Due to the limitation of the fixed valve, the entire oil well pump cannot be pressurized to form a liquid inlet channel after it is blocked. At present, the oil well pump is blocked by setting a pressure sliding sleeve at the lower end of the oil well string. The disadvantages of this sealing method are: ①The oil well pump must be Rod pumps or fixed-valve pumps can be thrown in, instead of ordinary whole-tube pumps with good oil pumping effect and wide application, which narrows the selection range of oil well pumps and reduces the oil pumping effect. ②The sliding sleeve needs ...

AI Technical Summary

Problems solved by technology

Due to the limitation of the fixed valve, the entire oil well pump cannot be pressurized to form a liquid inlet channel after it is blocked. At present, the oil well pump is blocked by setting a pressure sliding sleeve at the lower end of the oil well string. The disadvantages of this sealing method are: ①The oil well pump must be Rod pumps or fixed-valve pumps that can be fished can be used instead of ordinary full-tube pumps with good oil pumping effect and wide application, which narrows the selection range of oil well pumps and reduces the oil pumping effect

②It is necessary to open the sliding sleeve before lowering the sucker rod string, and then lower the sucker rod string, so that the construction is also under pressure when the sucker rod string is lowered, which increases the difficulty of construction

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