Oil pumping unit protection device special for oil production engineering and using method of oil pumping unit protection device

Abstract

The invention provides a special oil pumping unit protection device for oil production engineering and a use method thereof. Comprising a motor, a speed reducer, a supporting frame and an upper connector, the top of the supporting frame is rotationally connected with a movable beam, a horse head is fixed to one end of the movable beam, a sucker rod is fixed to the horse head through a steel wire rope, the bottom end of the upper connector communicates with an outer cylinder, a fixed cylinder is arranged at the bottom end of the outer cylinder, and a pump cylinder is arranged in the outer cylinder; a plunger is arranged in the pump cylinder in a sliding mode, and an oil inlet hole is formed in the bottom of the plunger. According to the special oil pumping unit protection device for the oil production engineering and the using method thereof, oil drainage is prevented, the blowout prevention mechanism is arranged, the overflow condition caused by stratum energy can be effectively controlled, the sand content of crude oil is reduced, foreign matter deposition in a well can be prevented from blocking the bottom of an oil well pump, and the problem that foreign matter deposition in the well blocks the bottom of the oil well pump and a pipeline is solved; and therefore, the service life of the oil pump is prolonged.

Description

technical field [0001] The invention relates to the field of oil production engineering, in particular to a special pumping unit protection device for oil production engineering and a use method thereof. Background technique [0002] Oil production engineering is a general term for various engineering and technical measures taken to oil reservoirs through production wells and injection wells according to development goals in the process of oilfield development. The theory, engineering design method and implementation technology of various engineering technical measures of yield. The task of oil production engineering is to make oil and gas flow smoothly into the well through a series of engineering and technical measures that can act on the reservoir, and lift it to the surface efficiently for separation and metering; its goal is to increase the production of oil wells cost-effectively and crude oil recovery. [0003] Oil wells are holes drilled by drilling methods. Gener...

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Problems solved by technology

[0004] Beam pumping unit is one of the main types of pumping units currently used in oil fields. It is mainly composed of donkey head, beam, connecting rod, crank mechanism, reduction box, power equipment and auxiliary equipment. When working, the motor The rotation of the donkey is transformed into the up and down motion of the donkey head through the gearbox and the crank linkage mechanism. The donkey head drives the plunger of the downhole oil pump to move up and down through the polished rod and the sucker rod, and the crude oil in the well is continuously pumped through the tubular oil pump. During the process of pumping out the wellbore and the oil well pump, the well pressure of different terrains is unstable, which makes the overflow caused by the formation energy, and the oil drainage phenomenon occurs in the pipe string. In the oil well with a large oil sand content, the process of pumping There will be a large amount of sand mixed in the well, which will cause foreign matter in the well to block the bottom of the pump and the pipeline, causing the pump to get stuck, increasing the wear of the parts, and reducing the service life of the pumping unit pump.

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