CN206958496U - A kind of thermal insulation tubing - Google Patents

Abstract

The utility model discloses a thermal insulation oil pipe, which comprises an oil pipe base body, the inner surface of the oil pipe base body is provided with a ceramic glaze, the outer surface of the oil pipe base body is provided with a thermal insulation layer, and the outer surface of the thermal insulation layer is provided with a protective layer , the surface of the protective layer is provided with an anti-corrosion layer. The beneficial effect is that the inner wall is smooth, which can greatly reduce the friction force when the oil flows, and is light in weight, has good heat preservation effect and corrosion resistance effect, long service life, no need to consume extra energy during use, and high cost performance.

Description

a thermal insulation pipe

technical field

The utility model relates to the field of pipelines, in particular to a thermal insulation oil pipe.

Background technique

At present, regardless of the oil recovery methods used in major oilfields in China, the temperature of the oil drops greatly while the viscosity increases during the process of the oil from the oil layer to the ground. In addition to the oil outlet temperature, when the crude oil rises from the underground oil layer to the surface, the temperature of the crude oil is basically slightly higher than the formation temperature at the same position, from 55-130°C in the oil layer to 15-30°C. Smaller, during production in winter, the temperature of the oil when it reaches the surface wellhead is only 15°C to 20°C, which is far below the freezing point (the freezing point of crude oil is generally 30°C to 38°C), and the viscosity of crude oil in the underground oil layer (thin oil) Generally, it is 4-5mpa.s (close to the viscosity of edible salad oil). From this point of view, the viscosity of crude oil increases several times during the lifting process in the oil pipe. In many cases, the viscosity of the oil to the ground is the viscosity when it is in the oil layer. 9 times more than that of the oil, and the decrease of the oil temperature leads to the increase of the viscosity, which increases the frictional resistance of the oil in the pipeline. Therefore, a greater power consumption of the pumping machine is required to maintain the production. Moreover, the increase of the viscosity directly leads to the increase of the oil The flow resistance of the oil increases, and when the oil reaches the ground, the fluidity has deteriorated, and hot water is often required for transportation, resulting in a waste of resources and collection and transportation costs.

Utility model content

The purpose of this utility model is to provide a kind of heat preservation oil pipe in order to solve the above problems.

The utility model realizes above-mentioned purpose through following technical scheme:

According to one aspect of the present utility model, there is provided a thermal insulation oil pipe, including an oil pipe base body, the inner surface of the oil pipe base body is provided with a ceramic glaze, the outer surface of the oil pipe base body is provided with an insulation layer, and the outer surface of the insulation layer is A protective layer is provided on the surface, and an anti-corrosion layer is provided on the surface of the protective layer.

In this embodiment, the oil pipe base is processed by seamless steel pipe.

In this embodiment, the thickness of the ceramic glaze is 2mm-3mm.

In this embodiment, the thickness of the heat insulation layer is 0.1mm-10mm, and the heat insulation layer is any one of airgel heat insulation coating, nano-modified polyurethane composite heat insulation coating or other nano heat insulation coatings. One, wherein the airgel thermal insulation coating is airgel thermal insulation coating, airgel thermal insulation felt or cloth, and the nano-modified polyurethane composite thermal insulation coating is nano-aerogel modified polyurethane composite thermal insulation layer or other nano-material modified polyurethane composite heat-insulating layer, and the other nano-heat-insulation coating is nano-silica or hollow microspheres.

In this embodiment, the protective layer is any one of a glass fiber reinforced plastic composite glass fiber protective layer, a steel housing protective layer, or a heat-shrinkable sleeve.

The beneficial effect is that the inner wall is smooth, which can greatly reduce the friction force when the oil flows, and is light in weight, has good heat preservation effect and corrosion resistance effect, long service life, no additional energy consumption during use, and high cost performance.

Description of drawings

Fig. 1 is a structural schematic diagram of a thermal insulation oil pipe according to the utility model.

In the figure: 1. Ceramic glaze; 2. Oil pipe substrate; 3. Insulation layer; 4. Protective layer; 5. Anti-corrosion layer.

Detailed ways

As shown in Figure 1, a kind of thermal insulation oil pipe, comprises oil pipe base body 2, is characterized in that: the inner surface of described oil pipe base body 2 is provided with ceramic glaze 1, and the outer surface of described oil pipe base body 2 is provided with insulation layer 3, so The outer surface of the thermal insulation layer 3 is provided with a protective layer 4, the surface of the protective layer 4 is provided with an anti-corrosion layer 5, and the anti-corrosion layer 5 is used to prevent corrosive substances in the external environment from corroding the oil pipe, thereby improving the service life of the oil pipe .

In this embodiment, the oil pipe base 2 is made of seamless steel pipe, which can withstand the pressure s during oil transportation.

In this embodiment, the thickness of the ceramic glaze 1 is 2mm-3mm, the ceramic glaze 1 can improve the surface smoothness of the oil insulation pipe, reduce the friction between the oil and the oil insulation pipe when it flows, and at the same time The above-mentioned ceramic glaze surface 1 can withstand high temperature and has low thermal conductivity, which can effectively prevent the rapid dissipation of oil heat.

In this embodiment, the thickness of the thermal insulation layer 3 is 0.1mm-10mm, and the thermal insulation layer 3 is an airgel thermal insulation coating, a nano-modified polyurethane composite thermal insulation coating or other nano thermal insulation coatings. Any one of them, wherein the airgel thermal insulation coating is airgel thermal insulation coating, airgel thermal insulation blanket or cloth, and the nano-modified polyurethane composite thermal insulation coating is nano-aerogel modified polyurethane composite Heat insulation layer or other nano-material modified polyurethane composite heat insulation layer, the other nano heat insulation coating is nano silicon dioxide or hollow microspheres, the heat insulation layer 3 can heat the oil pipe matrix 2 to prevent internal The heat is diffused outward while preventing the conduction of cold outside air inward.

In this embodiment, the protective layer 4 is any one of a glass fiber reinforced plastic composite glass fiber protective layer, a steel housing protective layer or a heat-shrinkable sleeve, and the protective layer 4 is used to protect the thermal insulation layer 3 .

Claims (5)

1. a kind of thermal insulation tubing, including oil pipe matrix, it is characterised in that：The inner surface setting of the oil pipe matrix has ceramic glaze Face, the outer surface of the oil pipe matrix are provided with heat-insulation layer, and the outer surface of the heat-insulation layer sets matcoveredn, the protective layer Surface be provided with anticorrosive coat.

A kind of 2. thermal insulation tubing according to claim 1, it is characterised in that：The oil pipe matrix is processed using seamless steel pipe Form.

A kind of 3. thermal insulation tubing according to claim 1, it is characterised in that：The thickness of the Ceramic glaze is 2mm-3mm.

A kind of 4. thermal insulation tubing according to claim 1, it is characterised in that：The thickness of the heat-insulation layer is 0.1mm- 10mm, the heat-insulation layer are aerogel heat-proof coating, nano modified polyurethane composite thermal barrier coatings or other nanometer thermal insulation coatings Any of, wherein the aerogel heat-proof coating is aerogel heat-proof coating, aeroge insulation quilt or cloth, the nanometer changes Property polyurethane composite thermal barrier coatings be that nanoporous aerogel changes surname polyurethane compound heat-insulation layer or other nano material modified polyurethanes Compound heat-insulation layer, other described nanometer thermal insulation coatings are nano silicon or cenosphere.

A kind of 5. thermal insulation tubing according to claim 1, it is characterised in that：The protective layer is that fiberglass compound glass is fine Any of maintenance sheath or steel shell protective layer or shrinkable sleeve.