CN216344389U

CN216344389U - Nickel-based hydrogen sulfide and carbon dioxide resistant oil pipe

Info

Publication number: CN216344389U
Application number: CN202122761518.5U
Authority: CN
Inventors: 王磊; 蒲宝林; 杜小娇; 孙大鹏; 康寿惠; 蒲朋磊; 王宗祥; 刘心宁
Original assignee: Shandong Sonic Petroleum Industry Technology Research Institute Co ltd
Current assignee: Shandong Sonic Petroleum Industry Technology Research Institute Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-19
Anticipated expiration: 2031-11-11

Abstract

The utility model provides a nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe which comprises an oil pipe base body, wherein a sulfide resistant steel pipe is fixedly connected inside the oil pipe base body, a fire resistant heat insulation pipe is fixedly connected with the inner end face of the sulfide resistant steel pipe, a tungsten steel corrosion resistant pipe is fixedly connected with the inner end face of the fire resistant heat insulation pipe, and nickel sulfate protective layers are electroplated on the pipe walls of the sulfide resistant steel pipe, the fire resistant heat insulation pipe and the tungsten steel corrosion resistant pipe. The utility model discloses a, fire-resistant thermal-insulated pipe has better high temperature resistant thermal-insulated ability, and its anticorrosive pipe of tungsten steel has better fire-resistant and anti high pressure ability, all electroplates the nickel sulfate protective layer by the pipe wall department of the anticorrosive pipe of resistant sulfuration steel pipe, fire-resistant thermal-insulated pipe and tungsten steel again, has increased the thickness on anticorrosive coating to make the device reach good anticorrosive effect, adopt the three-layer electroplating technique, increase the anticorrosive coating thickness, thoroughly stop the appearance of pinhole, improve anticorrosive coating corrosion resistance.

Description

Nickel-based hydrogen sulfide and carbon dioxide resistant oil pipe

Technical Field

The utility model relates to the technical field of corrosion-resistant oil pipes, in particular to a nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil 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 metal pipe 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 pipe, shortens the service life of the pipe, and particularly under the high-temperature and high-pressure environment, the corrosion rate of hydrogen sulfide on the metal pipe is greatly increased, so that the failure time of the pipe is short, the operation period is short, the workload of an oil field is influenced by frequent repeated operation, and a large amount of manpower and material resources are wasted.

The traditional anticorrosion process is limited by high temperature and high pressure, cannot meet the deeper requirement of an oil well, cannot perform anticorrosion treatment on the outer wall of a pipe, has poor effect of resisting hydrogen sulfide corrosion, essentially determines that certain anticorrosion defects exist, can realize comprehensive anticorrosion of the inner surface and the outer surface of the pipe, meets the requirement that the pipe is used in a high-temperature and high-pressure corrosion environment for a long time under the action of hydrogen sulfide, and becomes an effective way for improving the yield of an oil field and saving the cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe which has a good corrosion resistant effect, adopts a three-layer electroplating technology, has the advantages of increasing the thickness of a corrosion resistant layer, thoroughly eliminating pinholes, improving the corrosion resistant capability of the corrosion resistant layer and the like, and solves the problem of poor hydrogen sulfide corrosion resistant effect of the traditional corrosion resistant process under high temperature and high pressure.

(II) technical scheme

In order to realize the good corrosion resistance effect, the three-layer electroplating technology is adopted, the thickness of the anticorrosive layer is increased, pinholes are thoroughly avoided, and the purpose of improving the corrosion resistance of the anticorrosive layer is achieved, and the following technical scheme is provided: the utility model provides a nickel base anti hydrogen sulfide anti carbon dioxide oil pipe, includes the oil pipe base member, the inside fixedly connected with of oil pipe base member is able to vulcanize the steel pipe, the interior terminal surface fixedly connected with fire-resistant thermal-insulated pipe of resistant vulcanize the steel pipe, the interior terminal surface fixedly connected with tungsten steel of fire-resistant thermal-insulated pipe is able to corrode the pipe, the pipe wall department of resistant vulcanize steel pipe, fire-resistant thermal-insulated pipe and tungsten steel corrosion-resistant pipe all has electroplated nickel sulfate protective layer.

Preferably, the oil pipe base body is made of high specific gravity tungsten alloy.

Preferably, the outer surface of the oil pipe base body is sprayed with an anti-oxidation coating.

Preferably, the nickel sulfate protective layer belongs to a metal plating layer.

(III) advantageous effects

Compared with the prior art, the utility model provides a nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe which has the following beneficial effects:

1. the nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe is characterized in that a sulfide resistant steel pipe, a fire resistant heat insulation pipe and a tungsten steel corrosion resistant pipe are arranged in an oil pipe base body, the sulfide resistant steel pipe and the tungsten steel corrosion resistant pipe are hydrogen sulfide resistant and carbon dioxide resistant pipelines, the fire resistant heat insulation pipe has good high temperature resistance and heat insulation capacity, the tungsten steel corrosion resistant pipe has good fire resistance and high pressure resistance, nickel sulfate protective layers are electroplated on the pipe walls of the sulfide resistant steel pipe, the fire resistant heat insulation pipe and the tungsten steel corrosion resistant pipe, the thickness of the corrosion resistant layer is increased, the device achieves good corrosion resistant effect, the thickness of the corrosion resistant layer is increased by adopting a three-layer electroplating technology, pinholes are thoroughly eliminated, and the corrosion resistant capacity of the corrosion resistant layer is improved.

2. The nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe has the advantages of being non-toxic, environment-friendly, high in hardness, good in high temperature resistance, high in reaction speed and high in tensile strength by arranging the oil pipe base body to be the high-specific-weight tungsten alloy, so that the pipeline is not prone to breaking, perforating and other accidents, the overall corrosion resistance of the pipe is improved, the service cycle of the pipe is prolonged, and the raw material cost and the repeated operation cost are saved.

3. The nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe has the advantages that the anti-oxidation coating is sprayed on the outer surface of the oil pipe base body, so that the oil pipe base body has good carbon dioxide resistance, the oil pipe base body is not prone to rusting, the overall corrosion resistance of the pipe is improved, the service cycle of the pipe is prolonged, and the raw material cost and the repeated operation cost are saved.

4. This nickel base is anti hydrogen sulfide and is anti carbon dioxide oil pipe belongs to the metal coating through setting up the nickel sulfate protective layer, makes the thickness and the durability of nickel sulfate protective layer all better, has increased the practicality of device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the structure of the present invention.

In the figure: 1. an oil pipe base body; 2. a steel pipe resistant to vulcanization; 3. a refractory heat insulating tube; 4. a tungsten steel corrosion resistant tube; 5. a nickel sulfate protective layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a nickel-based hydrogen sulfide resistant and carbon dioxide resistant oil pipe comprises an oil pipe base body 1, a sulfide resistant steel pipe 2 is fixedly connected inside the oil pipe base body 1, a fire resistant heat insulation pipe 3 is fixedly connected to an inner end surface of the sulfide resistant steel pipe 2, a tungsten steel corrosion resistant pipe 4 is fixedly connected to an inner end surface of the fire resistant heat insulation pipe 3, and nickel sulfate protective layers 5 are electroplated on pipe walls of the sulfide resistant steel pipe 2, the fire resistant heat insulation pipe 3 and the tungsten steel corrosion resistant pipe 4;

the scheme has the beneficial effects that: the sulfuration-resistant steel pipe 2 and the tungsten steel corrosion-resistant pipe 4 are pipelines with hydrogen sulfide resistance and carbon dioxide corrosion resistance, the fireproof heat-insulating pipe 3 has better high-temperature-resistant heat-insulating capacity, the tungsten steel corrosion-resistant pipe 4 has better fireproof and high-pressure-resistant capacity, and then the pipe walls of the sulfuration-resistant steel pipe 2, the fireproof heat-insulating pipe 3 and the tungsten steel corrosion-resistant pipe 4 are all electroplated with the nickel sulfate protective layer 5, so that the thickness of the corrosion-resistant layer is increased, the device achieves good corrosion-resistant effect, the three-layer electroplating technology is adopted, the thickness of the corrosion-resistant layer is increased, pinholes are thoroughly avoided, and the corrosion-resistant capacity of the corrosion-resistant layer is improved.

Further, the oil pipe base body 1 is made of high specific gravity tungsten alloy;

by arranging the oil pipe base body 1 as the high-specific-gravity tungsten alloy, the high-specific-gravity tungsten alloy pipe has the advantages of being non-toxic, environment-friendly, strong in hardness, good in high-temperature resistance, high in reaction speed and high in tensile strength, so that the pipeline is not prone to breaking, perforating and other accidents, the overall corrosion resistance of the pipe is improved, the service life of the pipe is prolonged, and the raw material cost and the repeated operation cost are saved.

Further, the outer surface of the oil pipe base body 1 is sprayed with an anti-oxidation coating;

the anti-oxidation coating is sprayed on the outer surface of the oil pipe base body 1, so that the oil pipe base body 1 has good carbon dioxide resistance, the oil pipe base body 1 is not easy to rust, the overall corrosion resistance of the pipe is improved, the service cycle of the pipe is prolonged, and the raw material cost and the repeated operation cost are saved.

Further, the nickel sulfate protective layer 5 belongs to a metal coating;

through setting up nickel sulfate protective layer 5 and belonging to the metallic coating, make the thickness and the durability of nickel sulfate protective layer 5 all better, increased the practicality of device.

The working principle is as follows: the oil pipe base body 1 is internally provided with the vulcanization-resistant steel pipe 2, the fireproof heat insulation pipe 3 and the tungsten steel corrosion-resistant pipe 4, the vulcanization-resistant steel pipe 2 and the tungsten steel corrosion-resistant pipe 4 are pipelines with hydrogen sulfide resistance and carbon dioxide corrosion resistance, the fireproof heat insulation pipe 3 has better high-temperature heat insulation capacity, the tungsten steel corrosion-resistant pipe 4 has better fireproof and high-pressure resistance, and the pipe walls of the vulcanization-resistant steel pipe 2, the fireproof heat insulation pipe 3 and the tungsten steel corrosion-resistant pipe 4 are all electroplated with the nickel sulfate protective layer 5, so that the thickness of the corrosion-resistant layer is increased, the device achieves good corrosion-resistant effect, a three-layer electroplating technology is adopted, the thickness of the corrosion-resistant layer is increased, pinholes are completely eliminated, the corrosion-resistant capacity of the corrosion-resistant layer is improved, and the problem that the traditional corrosion-resistant process is poor in hydrogen sulfide corrosion-resistant effect under high-resistant high pressure is solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a nickel base anti hydrogen sulfide anti carbon dioxide oil pipe, includes oil pipe base member (1), its characterized in that: the interior fixedly connected with of oil pipe base member (1) is able to bear or endure vulcanization steel pipe (2), the interior terminal surface fixedly connected with fire-resistant thermal-insulated pipe (3) of resistant vulcanization steel pipe (2), the interior terminal surface fixedly connected with anticorrosive pipe of tungsten steel (4) of fire-resistant thermal-insulated pipe (3), the pipe wall department of resistant vulcanization steel pipe (2), fire-resistant thermal-insulated pipe (3) and anticorrosive pipe of tungsten steel (4) all has electroplated nickel sulfate protective layer (5).

2. The nickel-based hydrogen sulfide and carbon dioxide resistant oil pipe according to claim 1, wherein: the oil pipe base body (1) is made of high specific gravity tungsten alloy.

3. The nickel-based hydrogen sulfide and carbon dioxide resistant oil pipe according to claim 1, wherein: the outer surface of the oil pipe base body (1) is sprayed with an anti-oxidation coating.

4. The nickel-based hydrogen sulfide and carbon dioxide resistant oil pipe according to claim 1, wherein: the nickel sulfate protective layer (5) belongs to a metal coating.