CN206071477U - A kind of outer cladding couples the sucker rod of anticorrosion antiwear pipe - Google Patents

Abstract

A kind of outer cladding couples the sucker rod of anticorrosion antiwear pipe, sucker rod two ends are male connection and remaining position is the body of rod, the male connection couples box cupling, the two ends of the body of rod are provided with draw-in groove, it is called effective body in position between two draw-in grooves, in the external sheath connection anticorrosion antiwear pipe of effective body, anticorrosion antiwear pipe is ultra high molecular polyethylene pipe, the wall thickness control of anticorrosion antiwear pipe is in 1～20mm, its external sheath of remaining position for removing effective body couples corrosion-inhibiting coating, corrosion-inhibiting coating is Colophonium, anticorrosion antiwear pipe makes the wear-resisting of sucker rod, impact resistance, it is corrosion-resistant, self-lubricating, absorb impact property to be greatly enhanced, Jing Oil Field contrast tests show：Sucker rod its service life of external sheath connection anticorrosion antiwear pipe is more than 8 times of common sucker rod life-span, improves the service life of sucker rod, extends the usage cycles of sucker rod, save oil field production cost, reduces the maintenance cycle of sucker rod.

Description

A kind of outer cladding couples the sucker rod of anticorrosion antiwear pipe

Technical field

This utility model belongs to oilfield production equipment technical field, and especially a kind of outer cladding couples taking out for anticorrosion antiwear pipe Beam hanger.

Background technology

Sucker rod is one of important tool of oil exploitation, increasing with water injection well in oil fields, inclined shaft and horizontal well, Traditional sucker rod lacks necessary protective layer due to the outer layer of its metal material body of rod, is primarily present in use as follows Problem：

One is due to underground corrosion material, the mainly presence of corrosive liquids and corrosive gas, easily to metal material The outer layer exposed part of the matter body of rod produces corrosion；

Two is that sucker rod easily produces friction, particularly inclined shaft or level with the borehole wall in constantly reciprocating movement Well, fricting movement damage bigger to sucker rod.

Above-mentioned reason causes the service life of sucker rod significantly to shorten, and affects the normal production in oil field.

Also there is the sucker rod of outer cladding epoxy coating in the market, it is little to the heat resisting temperature of epoxy coating In 150 DEG C, under the use state of 150 DEG C of conditions, epoxy coating understands quick aging, and presence is made because adhesion is inadequate Epoxy coating produces ablation and pollutes oil well, the easy plugging oil pump of fragment that ablation is produced.

Also glass fiber reinforced plastic oil pumping rod is used, is easily broken off in use, cause work accident.

The content of the invention

To solve the above problems, this utility model devises the sucker rod that a kind of outer cladding couples anticorrosion antiwear pipe, is taking out The sucker rod that the external sheath connection of beam hanger has anticorrosion antiwear pipe, outer cladding connection anticorrosion antiwear pipe has stronger anticorrosive property And wear resistance, the service life of sucker rod can be improved, extends the usage cycles of sucker rod, save production cost.

For achieving the above object, this utility model is adopted the following technical scheme that：

A kind of outer cladding couples the sucker rod of anticorrosion antiwear pipe, and sucker rod is made by superior alloy steel, sucker rod Two ends are male connection and other positions are the bodies of rod, and the male connection couples box cupling, and the two ends of the body of rod are provided with card Groove, the position between two draw-in grooves are called effective body, it is characterized in that：

There is anticorrosion antiwear pipe in the external sheath connection of effective body, anticorrosion antiwear pipe is ultra high molecular polyethylene pipe, The wall thickness control of anticorrosion antiwear pipe removes other position external sheath connection corrosion-inhibiting coatings of effective body, institute in 1～20mm It is Colophonium to state corrosion-inhibiting coating.

Due to adopting technical scheme as above, this utility model to produce following good effect；

1st, this utility model has anticorrosion antiwear pipe in the external sheath connection of effective body, and anticorrosion antiwear pipe makes sucker rod Wear-resisting, impact resistance, corrosion-resistant, self-lubricating, absorb impact property and be greatly enhanced, Jing Oil Field contrast tests show： Sucker rod its service life of external sheath connection anticorrosion antiwear pipe is more than 8 times of common sucker rod life-span, improves oil pumping The service life of bar, extends the usage cycles of sucker rod, saves oil field production cost, reduces the maintenance week of sucker rod Phase.

2nd, the sucker rod of outer cladding superhigh molecular weight polyethylene pipe does not change the operation technique and working procedure in existing oil field, Extend the repairing efficiency of oil well.

Description of the drawings

Fig. 1 is the structure schematic diagram that this utility model is coupled with box cupling.

Fig. 2 is structure schematic diagram of the present utility model.

In above-mentioned figure：1- box cuplings；2- sucker rods；The 3- bodies of rod；4- anticorrosion antiwear pipes.

Specific embodiment

This utility model is the sucker rod that a kind of outer cladding couples anticorrosion antiwear pipe, and outer cladding connection anticorrosion antiwear pipe is taken out Beam hanger has stronger anticorrosive property and wear resistance, can improve the service life of sucker rod, and extend sucker rod uses week Phase, save production cost.

With reference to Fig. 1-2, sucker rod 2 is made by superior alloy steel, and the two ends of sucker rod 2 are male connection and remaining Position is the body of rod 3, and the two ends of the body of rod 3 are provided with draw-in groove, and effective body is called at the position between two draw-in grooves.

External sheath connection anticorrosion antiwear pipe 4 of this utility model in effective body, anticorrosion antiwear pipe 4 is supra polymer Polyethylene tube, in 1～20mm, the process of cladding connection anticorrosion antiwear pipe 4 can be on injection machine for the wall thickness control of anticorrosion antiwear pipe 4 Once complete, ultra high molecular polyethylene material can be coated by injection machine and is connected in effective volume surrounding, so as to be formed The anticorrosion antiwear pipe 4 of compacting, no matter the wall thickness of much its anticorrosion antiwear pipes 4 of outside dimension of effective body can be by injection Machine is effectively controlled, and this is it will be apparent that separately not repeating for this area.

Remove outside the external sheath connection anticorrosion antiwear pipe 4 of effective body, its outer layer of remaining position of sucker rod 2 can be with Cladding connection anticorrosive paint layer, other positions of sucker rod 2 is put in pitch bay and is stained with, and antiseptic effect is also obvious 's.

During use, the sucker rod of every outer cladding superhigh molecular weight polyethylene pipe can implement docking by box cupling 1, pass through Box cupling 1 can dock the sucker rod of several outer cladding ultra high molecular polyethylene pipes, the outer cladding ultra high molecular polyethylene of the bottom The sucker rod of pipe is coupled with oil pump plunger piston and down to design well depth, the oil pumping of the outer cladding ultra high molecular polyethylene pipe of the top Bar is coupled with polished rod.

Although this utility model seems simple, the effect for producing is it is clear that because of ultra high molecular polyethylene pipe Heat resisting temperature is far longer than 150 DEG C, and the performance of anticorrosion antiwear is greatly enhanced, and improves than the service life of common sucker rod More than 8 times, the economic benefit of generation is projected very much.

Claims (1)

1. a kind of outer cladding couples the sucker rod of anticorrosion antiwear pipe, and sucker rod (2) is made by superior alloy steel, sucker rod (2) two ends are male connection and remaining position is the body of rod (3), male connection connection box cupling (1), in the body of rod (3) Two ends be provided with draw-in groove, the position between two draw-in grooves is called effective body, be it is characterized in that：

There is anticorrosion antiwear pipe (4) in the external sheath connection of effective body, anticorrosion antiwear pipe (4) is ultra high molecular polyethylene Pipe, in 1～20mm, its external sheath connection of remaining position for removing effective body is anti-for the wall thickness control of anticorrosion antiwear pipe (4) Rotten coating, the corrosion-inhibiting coating are Colophonium.