CN201314291Y

CN201314291Y - Protector of oil well pump

Info

Publication number: CN201314291Y
Application number: CNU2008201261117U
Authority: CN
Inventors: 马士杰; 付新民
Original assignee: 马学庆
Current assignee: Ma Xueqing
Priority date: 2008-06-19
Filing date: 2008-06-19
Publication date: 2009-09-23
Anticipated expiration: 2018-06-19

Abstract

A protector of an oil well pump comprises an oil pipe joint and an oil pump joint, wherein the inner diameter of the upper end of the oil pump joint is firmly connected with the lower end of an internal pipe; the upper end of the internal pipe is firmly connected with a connecting ring; the upper end of the connecting ring is firmly connected with an arc-shaped or conical cap which is made of flexible material; a cross opening is arranged at the center of the cap; the outer diameter of the upper end of the oil pump joint is firmly connected with the lower end of an external pipe; and the upper end of the external pipe is firmly connected with the oil pipe joint. Since the internal and the external pipes are added on the barrel of the oil well pump to form the protector, the silt extracted from a petroleum reservoir and the waste dirty impurities inside and outside an oil well are not stagnated between the piston and the pump barrel of the oil well pump but collected in the cavity between the internal and the external pipes of the upper part of the pump barrel, consequently, the oil well pump is protected, the pump efficiency is increased by 30 percent to 50 percent, the oil production per well is increased by 10 percent to 30 percent, and meanwhile, the overhauling period of the oil well pump is prolonged.

Description

Protective gear on the oil well pump

Technical field

The utility model relates to the protective gear on a kind of oil well pump, is installed on the oil well pump under the oil well a kind of additional device of protection pump housing operation specifically.

Background technique

At present, the oil recovery in oil field generally is under oil well oil well pump to be installed, and ground horse head pumping unit drives pumping of oil well pump by sucker rod, and oil is extracted out.The working environment complexity of oil well pump, the silt particle in the oil reservoir, the aqueous corrosion phenomenon is produced in the oil reservoir corrosion and foulant drop in the oil pipe of pump; Aborning, the useless erosion thing of generation such as rod and tube partial-wear falls in the pump; When stopping well, trickle foreign material such as silt particle fall in the pump housing; When the maintenance pump housing, wall rust and dirt in the oil pipe also can be scraped in the pump.In a word, oil well pump is under complex environment, and useless erosion foreign material fall into pump the holddown accident takes place easily, and the pump housing is impaired serious, and working life is low, and influence is produced.

The model utility content

The technical problems to be solved in the utility model provides a kind of simple in structure, and cost is low, the protective gear on the high oil well pump of manufacturing efficiency

Protective gear on the utility model oil well pump, comprising oil connection and oil pump joint, the internal diameter of oil pump upper end of joint is fixedlyed connected with interior pipe lower end, and fixedlying connected with circular arc type or tapered cap that soft elastic material is made in the upper end of interior pipe, is provided with the cross opening at the center of cap; The external diameter of oil pump upper end of joint is fixedlyed connected with the outer tube lower end, and the outer tube upper end fixedly is communicated with oil connection.

Protective gear on the utility model oil well pump, wherein fixedly connected with fastener rings in the upper end of interior pipe, and fixedly connected with cap in the upper end of fastener rings.

Protective gear on the utility model oil well pump is to install the inner and outer pipe component devices additional on the tube of oil well pump, and the protective cap that the nitrile rubber material is made is installed at interior pipe top, make silt particle and the inside and outside useless erosion foreign material of oil well extracted out in the oil reservoir can not stay among oil well pump piston and the pump barrel with fixed attention, but be collected between the inner and outer pipe on pump barrel top in the cavity, thereby protected oil well pump, improve pump efficiency benefit 30%～50%, individual well increases oil production 10%～30%; Prolonged the repair cycle of oil well pump simultaneously.

Description of drawings

Fig. 1 is the protective gear structural principle schematic representation on the utility model oil well pump;

Coupled condition schematic representation when Fig. 2 uses for the utility model.

Embodiment

As seen from Figure 1, protective gear on the utility model oil well pump comprises oil connection 1 and oil pump joint 7, the internal diameter of oil pump joint 7 upper ends and interior pipe 6 lower end tapered threads are connected and fixed, the upper end of interior pipe 6 is threaded fixing with fastener rings 4, the upper end of fastener rings 4 with fixedly connected with circular arc type or 4 injection mouldings of tapered cap that the nitrile rubber material is made, be provided with cross opening 3 at the center of cap 4; The external diameter of oil pump joint 7 upper ends is fixedlyed connected with outer tube 2 lower end screw threads, and the external diameter spiral shell of outer tube 2 upper ends and oil connection 1 lower end is put and is connected and fixed, and promptly forms cavity between the inner and

outer pipe

6,2.

Referring to Fig. 2, when the protective gear on the utility model oil well pump uses, fixedly connected with the shell of oil well pump 9 in oil pump joint 2 lower ends, and oil well pump 9 places under the oil well pipe.Oil connection 1 upper end is communicated with oil pipe, and the sucker rod 8 of pumping unit is passed down through cross opening 3 on oil connection 1, the cap 4 and stretches in the oil well pump 9 with oil pump joint 2 and be connected with pump piston, and the pumping of sucker rod 8 drives pump and extract crude oil.

Workover rig service to oil well, normal oil pumping are produced and other impurity such as the silt particle that stops falling when produce at the family, embroidery, dirt are collected in the space between the inner and

outer pipe

6,2; oil pump joint 2 is kept apart various useless erosion foreign material and pump casing; promptly can not fall into the shell of pump, can not influence the operation of pump piston.Oil in the pump is extracted out through the cross opening 3 that interior pipe 6 makes progress from cap 4 with certain pressure, and the silt particle in the oil is also taken out of thereupon simultaneously.

The utility model is adapted to viscosity 10000 anxietys pools following thick, thin oil well, working pressure 25MPa, operating temperature 〉=150 ℃.

Claims

1, the protective gear on a kind of oil well pump, it is characterized in that comprising oil connection (1) and oil pump joint (7), the internal diameter of described oil pump joint (7) upper end is fixedlyed connected with interior pipe (6) lower end, in described fixedly connected with circular arc type or tapered cap (4) that soft elastic material is made in the upper end of pipe (6), is provided with cross opening (3) at the center of described cap (4); The external diameter of described oil pump joint (7) upper end is fixedlyed connected with outer tube (2) lower end, and described outer tube (2) upper end fixedly is communicated with described oil connection (1).

2, the protective gear on the oil well pump according to claim 1 is characterized in that fixedlying connected with fastener rings (5) in the upper end of described interior pipe (6), fixedlys connected with described cap (4) in the upper end of described fastener rings (5).