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High-temperature-resistant and antioxidative heat-insulating petroleum pipe

A technology of high temperature resistance and anti-oxidation, applied in the direction of drill pipe, casing, drilling equipment, etc., can solve the problems of non-corrosion resistance, short service life, poor heat preservation effect, etc., and achieve the effect of prolonging service life and reducing maintenance cost

Inactive Publication Date: 2013-09-11
WUXI JINDING OIL PIPE FITTINGS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the injection pipes used for secondary oil recovery and tertiary oil recovery are steel pipes, which are double-layer pipes, which have poor insulation effect, are not corrosion-resistant, and have a short service life; especially, the outer surface of the inner pipe only has an insulation structure. Need to add the necessary protective structure

Method used

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  • High-temperature-resistant and antioxidative heat-insulating petroleum pipe

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Embodiment Construction

[0011] Such as figure 1 As shown, the high-temperature-resistant, anti-oxidation, and heat-retaining oil pipe in the embodiment of the present invention includes an outer pipe body 1 and an inner pipe body 2. The inner pipe body 2 is arranged at the center of the inner cavity of the outer pipe body 1 and the inner pipe body The inner surface of the body 2 is provided with a layer of anti-corrosion layer 5, and at the same time, a layer of glass wool insulation layer 6 is arranged on the outer surface of the inner pipe body 2. It is important to mention that the glass wool insulation layer 6, a layer of high-temperature resistant and anti-oxidation layer 8 is added on the periphery, and the thickness of the glass wool thermal insulation layer 6 is equal to the thickness of the high-temperature-resistant and anti-oxidation layer 8; the outer tube body 1 is evenly arranged with four The outer boss 3 of the arc surface and each outer boss 3 is wrapped with a layer of aluminum foil...

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Abstract

The invention discloses a high-temperature-resistant and antioxidative heat-insulating petroleum pipe which comprises an outer pipe body and an inner pipe body. The inner pipe body is arranged in the middle of an inner cavity of the outer pipe body, and an anticorrosive layer is arranged on the inner surface of the inner pipe body. A glass wool heat-insulating layer is arranged on the outer surface of the inner pipe body. A high-temperature-resistant and antioxidative layer is additionally arranged on the periphery of the glass wool heat-insulating layer. The high-temperature-resistant and antioxidative heat-insulating petroleum pipe has the advantages that heating-insulating, anticorrosive and antioxidative properties of the inner pipe body can be guaranteed; meanwhile, an aluminum-foil reflecting layer is arranged on the outer portion of the outer pipe body in a boss manner, so that service life of the outer pipe body can be prolonged, and maintenance cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a high-temperature-resistant, oxidation-resistant and heat-insulating oil pipe. Background technique [0002] At present, pipe fittings used in petroleum, chemical industry, electric power, shipbuilding, metallurgy, machinery, textile, food, construction, pharmaceutical and other industries need to have high strength, pressure resistance, corrosion resistance and high temperature resistance. Therefore, in petroleum In the field of mining technology, in order to improve the recovery rate of oilfield crude oil, secondary oil recovery and tertiary oil recovery are usually carried out. Secondary oil recovery is to recover oil by supplementing formation pressure with water injection; tertiary oil recovery is through gas injection, chemical injection, microbial injection Due to the high viscosity of the underground heavy oil, in order to make it have good fluidity, the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00
Inventor 沈金章
Owner WUXI JINDING OIL PIPE FITTINGS
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