CN212177057U

CN212177057U - Nickel-tungsten coating sleeve

Info

Publication number: CN212177057U
Application number: CN202020638123.9U
Authority: CN
Inventors: 李平; 宋利华; 刘卫胜
Original assignee: Shengli Petroleum Machinery Factory Of Shengli Oil Field Jindao Industrial Co ltd; Shengli Oilfield Jindao Industrial Co ltd
Current assignee: Shengli Petroleum Machinery Factory Of Shengli Oil Field Jindao Industrial Co ltd; Shengli Oilfield Jindao Industrial Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-12-18
Anticipated expiration: 2030-04-24

Abstract

The utility model belongs to the technical field of the chemical industry pipeline technique and specifically relates to a nickel tungsten cladding material sleeve pipe, including the sleeve pipe body, the both ends of sleeve pipe body all are connected with connecting thread, and the internal surface fixed connection of sleeve pipe body has polytetrafluoroethylene mould layer, and the internal surface fixed connection of sleeve pipe body has the inner tube, and polytetrafluoroethylene mould layer lies in between sleeve pipe body and the inner tube, and the internal surface fixed connection of inner tube has first nickel coating, is connected with the tungsten coating on the first nickel coating, and fixedly connected with second nickel coating on the tungsten coating. The utility model discloses a first nickel coating of internal surface fixed connection of inner tube, connect the tungsten coating on the first nickel coating, fixed connection second nickel coating on the tungsten coating, through first nickel coating, tungsten coating and second nickel coating electroplating on the inside surface of inner tube, the ability of anticorrosiveness of reinforcing inner tube for the sleeve pipe body is difficult to be corroded in the use, prolongs the life of sleeve pipe body, and the corrosion resistance is strong.

Description

Nickel-tungsten coating sleeve

Technical Field

The utility model relates to a chemical pipeline technical field especially relates to a nickel tungsten cladding material sleeve pipe.

Background

With the continuous development of oil and gas fields, the depth of an oil well is continuously deepened, and the working environment of the casing for the oil field is more and more complex, the temperature is higher and higher, and the pressure is higher and higher. The change of the corrosion environment improves the corrosion rate of the sleeve and shortens the service life of the sleeve, and particularly, the corrosion rate of the sleeve is greatly increased under the condition of saturated strong salt water in an alkaline environment, so that the failure time of the sleeve is short, the operation period is short, and frequent repeated operation affects the workload of an oil field and wastes a large amount of manpower and material resources. Traditional anticorrosive sleeve pipe had both received the restriction of high temperature high pressure, can't satisfy the deeper demand of oil well, can not carry out anticorrosive treatment to the sleeve pipe outer wall again, had decided to have certain anticorrosive defect in essence.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of poor corrosion resistance in the prior art and providing a nickel-tungsten coating sleeve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design is a nickel-tungsten coating sleeve, which comprises a sleeve pipe body, the both ends of the sleeve pipe body are connected with connecting threads, the internal fixed surface of the sleeve pipe body is connected with a polytetrafluoroethylene mold layer, the internal fixed surface of the sleeve pipe body is connected with an inner pipe, the polytetrafluoroethylene mold layer is located between the sleeve pipe body and the inner pipe, the internal fixed surface of the inner pipe is connected with a first nickel-plating layer, the first nickel-plating layer is connected with a tungsten-plating layer, and the tungsten-plating layer is connected with a second nickel-plating layer.

Preferably, the outer side of the sleeve pipe body is fixedly connected with an anti-abrasion layer.

Preferably, the sleeve pipe body and the inner pipe are of an integral structure.

Preferably, the outer surface of the inner pipe is provided with a groove, an adhesive layer is connected in the groove, and an anti-corrosion coating layer is fixedly connected on the adhesive layer.

Preferably, the anticorrosive coating layer is an epoxy resin layer.

Preferably, the sum of the thicknesses of the first nickel plating layer, the tungsten plating layer and the second nickel plating layer is 30-50 um.

The utility model provides a nickel tungsten cladding material sleeve pipe, beneficial effect lies in:

the inner surface of the inner tube is fixedly connected with the first nickel plating layer, the first nickel plating layer is connected with the tungsten plating layer, the tungsten plating layer is fixedly connected with the second nickel plating layer, and the inner surface of the inner tube is electroplated with the second nickel plating layer through the first nickel plating layer, the tungsten plating layer and the second nickel plating layer, so that the corrosion resistance of the inner tube is enhanced, the sleeve tube body is not easy to corrode in the using process, the service life of the sleeve tube body is prolonged, and the corrosion resistance is strong.

Drawings

Fig. 1 is a schematic structural view of a nickel-tungsten coated casing according to the present invention;

FIG. 2 is a schematic cross-sectional view of a nickel-tungsten coated casing according to the present invention;

fig. 3 is a schematic structural diagram of an inner tube in a nickel-tungsten plating sleeve according to the present invention.

In the figure: the pipe comprises a sleeve pipe body 1, an anti-abrasion layer 2, a connecting thread 3, a polytetrafluoroethylene mold layer 4, an inner pipe 5, a groove 6, a bonding layer 7, an anticorrosive coating layer 8, a first nickel plating layer 9, a tungsten plating layer 10 and a second nickel plating layer 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-3, a nickel-tungsten coating casing comprises a casing pipe body 1, both ends of the casing pipe body 1 are connected with connecting threads 3, the connecting threads 3 are used for connecting an oil pipe, the inner surface of the casing pipe body 1 is fixedly connected with a polytetrafluoroethylene mold layer 4, the polytetrafluoroethylene mold layer 4 is used for enhancing the corrosion resistance of the casing pipe body 1, the inner surface of the casing pipe body 1 is fixedly connected with an inner pipe 5, the casing pipe body 1 and the inner pipe 5 are of an integral structure, the polytetrafluoroethylene mold layer 4 is positioned between the casing pipe body 1 and the inner pipe 5, the inner surface of the inner pipe 5 is fixedly connected with a first nickel-plating layer 9, the first nickel-plating layer 9 is connected with a tungsten-plating layer 10, the tungsten-plating layer 10 is fixedly connected with a second nickel-plating layer 11, the thickness sum of the first nickel-plating layer 9, the tungsten-plating layer 10 and the second nickel-plating layer 11 is 30 um-50 um, and the tungsten-plating layer 10 and the second nickel-plating, the corrosion-resistant nickel capacity of the inner pipe 5 is enhanced, so that the sleeve pipe body 1 is not easy to corrode in the using process, the service life of the sleeve pipe body 1 is prolonged, and the corrosion resistance is strong.

Example 2

Referring to fig. 1-3, as the utility model discloses a another preferred embodiment, with embodiment 1 the difference lie in the outside fixedly connected with wearing layer 2 of sleeve pipe body 1, wearing layer 2 is the wear-resisting anticorrosive nanometer ceramic compound coating layer of high hardness, slow down sleeve pipe body 1's rate of wear, recess 6 has been seted up to inner tube 5's surface, recess 6 in-connection has adhesive linkage 7, fixedly connected with anticorrosive coating layer 8 on the adhesive linkage 7, anticorrosive coating layer 8 is the epoxy layer, connect anticorrosive coating layer 8 through adhesive linkage 7, the ability of resisting corrosion of inner tube 5 outer walls has been improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a nickel tungsten cladding material sleeve pipe, includes sleeve pipe body (1), the both ends of sleeve pipe body (1) all are connected with connecting thread (3), its characterized in that, the internal surface fixed connection of sleeve pipe body (1) has polytetrafluoroethylene die coat (4), the internal surface fixed connection of sleeve pipe body (1) has inner tube (5), polytetrafluoroethylene die coat (4) are located sleeve pipe body (1) with between inner tube (5), the internal surface fixed connection of inner tube (5) has first nickel coating (9), be connected with tungsten coating (10) on first nickel coating (9), fixedly connected with second nickel coating (11) on tungsten coating (10).

2. The nickel-tungsten coated casing according to claim 1, characterized in that the wear layer (2) is fixedly connected to the outside of the casing tube (1).

3. The nickel tungsten coated casing according to claim 1, characterized in that the casing tube (1) and the inner tube (5) are of an integral structure.

4. The nickel-tungsten coated casing pipe according to claim 1, wherein the outer surface of the inner pipe (5) is provided with a groove (6), an adhesive layer (7) is connected in the groove (6), and an anti-corrosion coating layer (8) is fixedly connected on the adhesive layer (7).

5. The nickel-tungsten coated casing pipe according to claim 4, wherein the anticorrosive coating layer (8) is an epoxy resin layer.

6. The nickel-tungsten plated sleeve according to claim 1, wherein the sum of the thicknesses of the first nickel plating layer (9), the tungsten plating layer (10) and the second nickel plating layer (11) is 30-50 um.