Hydro jet pump barrel

Abstract

The invention discloses a pump barrel of a hydraulic jet pump, which belongs to the technical field of oil and gas field exploitation technology. The pump cylinder of the hydraulic jet pump is detachably connected to the upper section of the second cylinder through the lower section of the first cylinder, which facilitates putting the buffer cylinder into the cylinder cavity of the first cylinder and the second cylinder. The inner wall of the lower section of the cylinder and / or the inner wall of the upper section of the second cylinder is provided with a groove of a predetermined length, and the wall of the buffer cylinder is provided with an annular protruding ring, and the annular protruding ring is movably snapped into the groove Inside, the first elastic buffer device is sleeved on the buffer cylinder, one end of the first elastic buffer device abuts against the lower edge of the groove, and the other end of the first elastic buffer device abuts against the lower end of the annular bead, so that When the pump core is seated into the pump barrel under the impulse of high-pressure water, the pump core can be set and sealed on the buffer barrel, and the buffering effect of the first elastic buffer device can reduce or eliminate the impact force on the pump barrel and the tubing buckle, preventing The pump barrel and hose buckle are damaged.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploitation technology, in particular to a pump barrel of a hydraulic jet pump. Background technique [0002] At present, in the process of oil production in oil fields, it is necessary to use pumps to pump formation fluid to the ground. The pumps currently used include plunger pumps, screw pumps, submersible pumps, and hydraulic jet pumps. The hydraulic jet pump has the advantages of large displacement and convenient operation, and occupies an important position in the existing oil exploitation. The hydraulic jet pump mainly includes two parts, the pump core and the pump barrel. The pump barrel is connected to the lower part of the oil well tubing, and is lowered into the well bore together with the oil pipe. Push to seat into pump barrel. [0003] Hydrojet pumps applied in the prior art, such as figure 1 As shown, it includes pump barrel a and pump core b, wherein pump barrel a is ...

AI Technical Summary

Problems solved by technology

[0005] Since the hydraulic jet pump in the oil field normally goes downhole at a depth of 800-1500m, when the pump core is seated into the pump barrel under the impulse of the fast-flowing high-pressure water, the running speed of the water column in the pump core and the tubing above it instantly decreases to zero, and the pump core directly Set on the base of the pump core in the pump barrel without cushioning, the pump barrel and the tubing buckle connected to the pump barrel will bear a large impact force, which is easy to cause damage to the pump barrel and the tubing buckle

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