CN207131348U - In-flow roller economic benefits and social benefits centralizer - Google Patents

Abstract

The utility model discloses in-flow roller economic benefits and social benefits centralizer, including centralizer matrix, righting roller, righting roller is installed on the centralizer matrix, the righting roller rolling surface will protrude centralizer matrix outer exterior wall.Roller hole is opened up in the middle part of the centralizer matrix, righting roller is arranged in roller hole by roller shaft.The roller hole is evenly equipped with four, and righting roller is fitted into cross distribution.Copper axle sleeve is cased with outside the roller shaft, righting roller housing is on the outside of copper axle sleeve.Roller shaft stool is provided with below the roller shaft, roller shaft stool is enclosed on centralizer matrix, and pressure cap is set below roller shaft stool, and pressure cap is enclosed on centralizer matrix.The centralizer matrix outer wall opens up flowing hole, and the centralizer matrix axial direction both ends set attachment structure.The utility model has the characteristics that control expense is low, flow channels are big, righting matrix wear rate is low, device service life is long.

Description

In-flow roller economic benefits and social benefits centralizer

Technical field

It the utility model is related to rod string erection device, specifically in-flow roller economic benefits and social benefits centralizer.

Background technology

With deepening continuously for oil field development, limited by surface condition, directional well and complex structural well proportion by Year increase.In such oil well sucker rod pump lifting process, rod string eccentric wear is the main reason for causing to lie well.At present to oil pumping Roofbolt, which carries out righting, mainly jointing centralising device two ways on internal lining pipe and roofbolt, the adaptability by the way of internal lining pipe Good, extension pump detection period effect is good, but individual well is costly.The mode of jointing centralising device on roofbolt, individual well expense is low, but exists Two aspect problem below, first, righting matrix is mostly sliding friction with tube inner wall, the abrasion of righting matrix is very fast, service life It is short；Second, righting matrix external diameter is big, when production fluid flows through centralizer, piston effect is also easy to produce, causes roofbolt unstability, increases righting Radial load suffered by device or friction point skew, have impact on the effect of eccentric wear improvement.

Carbon fiber nylon is a kind of common used material of prior art, and carbon fiber reinforced nylon composite is increasingly applied for vapour In turner industry, as engine interior part, auto industry is in progress in the high-performance composite materials using enhancing and self-lubricating Quickly this be primarily due to above-mentioned material oil resistivity, wearability and creep resistance it is splendid, instead of having during traditional metal material Advantage in light weight, the various engineering plastics including nylon -66 are just progressively substituted original automobile using after fibre reinforced Die cast metal component, such as fuel tank and its annex, in this respect carbon fibre reinforced composite provide preferable weight With intensity ratio.

The content of the invention

The purpose of this utility model is to provide in-flow roller economic benefits and social benefits centralizer, has that control expense is low, flow channels Greatly, the features such as righting matrix wear rate is low, device service life is long.

In order to reach above-mentioned purpose, the utility model employs following technical scheme, in-flow roller economic benefits and social benefits centralizer, bag Centralizer matrix, righting roller are included, righting roller is installed on the centralizer matrix, the righting roller rolling surface, which will protrude, to be helped Positive device matrix outer exterior wall.Roller hole is opened up in the middle part of the centralizer matrix, righting roller is arranged on roller hole by roller shaft In.Copper axle sleeve is cased with outside the roller shaft, righting roller housing is on the outside of copper axle sleeve.Rolling is provided with below the roller shaft Axle support, roller shaft stool are enclosed on centralizer matrix, and pressure cap is set below roller shaft stool, and pressure cap is enclosed on centralizer matrix On.The centralizer matrix outer wall opens up flowing hole, and the centralizer matrix axial direction both ends set attachment structure.

The roller hole is evenly equipped with four, and righting roller is fitted into cross distribution.

Compared to prior art, the utility model has the advantages that：

The utility model is using roller, body（Surface spraying weld high-abrasive material）Twin-stage righting, service life length；Righting simultaneously Matrix is changed to rolling friction by conventional sliding friction, and copper sheathing is designed between roller and axis, and roller rotary resistance is small, therefore reduces Frrction load.Device integrally only has carbon fiber nylon foreign steamer to expose steel centralizer body, if roller blocks, abrasion, will not produce Raw junk.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model in-flow roller economic benefits and social benefits centralizer；

Fig. 2 is Fig. 1 A-A sectional views；

Fig. 3 is Fig. 1 B-B sectional views.

In figure：1st, centralizer matrix；2nd, righting roller；3rd, copper axle sleeve；4th, roller shaft；5th, roller shaft stool；6th, pressure cap.

Embodiment

Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides ginseng Examine and purposes of discussion, be not used for being any limitation as the utility model.

According to Fig. 1-3, in-flow roller economic benefits and social benefits centralizer, including centralizer matrix 1, righting roller 2, copper axle sleeve 3, rolling Wheel shaft 4, roller shaft stool 5, pressure cap 6 etc., uniform eight flowing holes in the both ends of centralizer 1 are middle uniform to be provided with four rolling, and four Individual roller is formed in the way of the copper external application carbon fibre material of axle sleeve 3 is molded into righting roller.Each roller passes through roller shaft 4 In the hole processed on insertion righting matrix and roller support, and roller is fixed on centralizer matrix with pressure cap 6.After assembling Device entirety rotor block only has righting roller 2 to expose steel centralizer body.Righting roller 2 is made of carbon fiber nylon material.

The operation principle of the present apparatus is：First, centralizer tripping in is determined according to directional well righting position optimization design software Position, the screw thread then processed by the upper and lower ends of righting matrix 1 are connected with sucker rod.The pumping process above and below rod string In, the righting roller 2 for exposing steel centralizer body forms rolling friction pair in the tube inner wall contacted therewith, due to rolling friction Coefficient is less than the coefficient of sliding friction, the frrction load of suspension point is on the one hand reduced, on the other hand because of the rate of depreciation of righting roller 2 It is low, greatly extend the service life of device.If the sand grains or foreign matter that contain in production fluid block roller, righting roller 2 exists The tube inner wall contacted therewith is changed to sliding friction by original rolling friction pair, and with the abrasion of righting roller, surface is used The centralizer matrix of high-abrasive material surfacing contacts with tube inner wall, forms new sliding friction pair, continues to help sucker rod Just, and surface is highly polished with the centralizer matrix surface of high-abrasive material surfacing, and coefficient of friction is low, and its hardness is also below oil Pipe, serving both prevents rod string not eccentric wear, protects oil pipe not to be worn through again.

In addition, the flowing hole that the production fluid in oil pipe is opened up and down through centralizer matrix, flows through centralizer inside righting, and The area of passage of flowing hole is suitable with annular space area between sucker rod and oil pipe, therefore production fluid flows through centralizer will not produce piston Effect, unstability will not be caused to rod string so that eccentric wear well section is offset.

In old 168 grade Shallow water area directional well application 10-20 wells, pump detection period extends 75 days, saves pump detection and workover expense 700000 yuan, there is preferable economic and social benefit.

Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its He uses the equivalence changes of patent spirit of the present utility model, all should all belong to the scope of the claims of the present utility model.

Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its He uses the equivalence changes of the utility model patent spirit, all should all belong to the scope of the claims of the present utility model.

Claims (2)

1. in-flow roller economic benefits and social benefits centralizer, it is characterised in that including centralizer matrix, righting roller, the centralizer matrix Upper installation righting roller, the righting roller rolling surface will protrude centralizer matrix outer exterior wall, the centralizer matrix middle part Roller hole is opened up, righting roller is arranged in roller hole by roller shaft, and copper axle sleeve, righting rolling are cased with outside the roller shaft Wheel is enclosed on the outside of copper axle sleeve, and roller shaft stool is provided with below the roller shaft, and roller shaft stool is enclosed on centralizer matrix, Pressure cap is set below roller shaft stool, and pressure cap is enclosed on centralizer matrix, and the centralizer matrix outer wall opens up flowing hole, described Centralizer matrix axial direction both ends set attachment structure.

2. in-flow roller economic benefits and social benefits centralizer according to claim 1, it is characterised in that the roller hole is evenly equipped with four Individual, righting roller is fitted into cross distribution.