Improved tubing pump and technical method for overhauling pump without moving tubing string
An oil well pump and tubular technology, which is applied in the field of oil field maintenance, can solve the problems of short working life, leakage, long maintenance cycle, etc., and achieve the effect of reliable performance, reduced leakage, and reduced operating intensity
Pending Publication Date: 2018-07-06
KARAMAY SHENGLI PLATEAU MACHINERY CO LTD
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AI Technical Summary
Problems solved by technology
Short working life and long maintenance period
[0005] 3. The oil passes through the fit gap between the plunger and the pump barrel, resulting in leakage
After wear and deformation, the leakage will be larger and the pump efficiency will be reduced
Method used
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[0025] An improved tubular oil well pump and a process method for repairing the fixed oil tubing string, such as figure 1 , figure 2 As shown, it includes a tubular oil well pump 2 matched with the pump barrel 6 and a salvageable fixed valve 8 connected through a disconnector. The oil pipe 4 is connected to the pump barrel 6, and the stopper set on the salvageable fixed valve 8 is sealed. The surface matches the sealing surface of the boss 9 on the inner wall of the pump barrel 6, and the flexible sealing device 3 is installed in the sealing ring groove uniformly arranged on the plunger of the tubular oil well pump 2, and the plunger of the tubular oil well pump 2 passes through the The flexible sealing device 3 cooperates with the pump barrel 2 . The flexible sealing device 3 is made of polyethylene or polytetrafluoroethylene or nylon. The flexible sealing device 3 is a sealing cylinder, the width of the sealing cylinder is 3-10cm, the outer wall of the sealing cylinder is...
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The invention discloses an improved tubing pump and a technical method for overhauling the pump without moving a tubing string. The improved tubing pump comprises a tubing pump body matched with a pump barrel and a salvage fixing valve achieving connection through a puller; an oil tube is connected to the pump barrel; a barrier plate sealing face on the salvage fixing valve is matched with a convex plate sealing plate on the inner wall of the pump barrel; flexible sealing devices are installed in sealing rings lots in a matched mode, and the sealing ring slots are evenly distributed in a plunger of the tubing pump; and the plunger of the tubing pump is matched with the pump barrel through the flexible sealing devices. According to the technical method, a disengagement unit upper portion connected with the plunger of the tubing pump is disengaged from a disengagement unit lower portion connected with the salvage fixing valve. The structure is reasonable, performance is reliable, the oilpump can be overhauled only by lifting a rod string out instead of lifting a tubing string, the intensity of pump overhauling operation is reduced, the friction condition of the plunger and the pumpbarrel is improved, leakage is reduced, the pump efficiency is improved, and the service life is prolonged.
Description
technical field [0001] The invention relates to the field of oilfield maintenance operations, and belongs to a process method of a tubular oil well pump and a stationary oil string maintenance pump, in particular to an improved tubular oil well pump and a process method of a stationary oil string maintenance pump. Background technique [0002] In oil wells using tubular pumps, periodic maintenance of the well pumps is required. The oil well pump with traditional structure has the following disadvantages: [0003] 1. In the past maintenance work of oil well pump, it was necessary to lift out the sucker rod string, and then lift out the tubing string. The operation is labor-intensive and the operation cost is high. [0004] 2. There is a metal clearance fit between the plunger and the pump barrel. In the process of oil production, the friction pair composed of metal is easily affected by various factors, and the working environment is harsh. Such as: eccentric wear phenome...
Claims
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IPC IPC(8): F04B47/00F04B53/02F04B53/10
CPCF04B47/00F04B53/02F04B53/1002
Inventor 沈小松李刚尹海袁盼贾鹏王亮丁超吕俊锋
Owner KARAMAY SHENGLI PLATEAU MACHINERY CO LTD