Steel frame reinforced type petroleum pipe

Abstract

The invention discloses a steel frame reinforced type petroleum pipe. A layer of glass fiber reinforced plastic protective shell is arranged on the outer surface of an outer pipe body, a steel ring is arranged in a cavity positioned between the outer pipe body and an inner pipe body, the distance between the outer surface of the steel ring and the inner wall surface of the outer pipe body is equal to that between the inner surface of the steel ring and the outer wall surface of the inner pipe body, and a plurality of trapezoidal steel frames are arranged in a cavity between the steel ring and the outer pipe body as well as a cavity between the steel ring and the inner pipe body uniformly. The steel frame reinforced type petroleum pipe has the advantages that an anticorrosive coating is arranged on the inner surface of the inner pipe body, a glass fiber reinforced plastic protective shell structure is arranged on the outer surface of the outer pipe body, and accordingly heat preservation and insulation performances and corrosion resistance of the inner pipe body and the outer pipe body are guaranteed; the double-layer steel frames are additionally arranged between the outer surface of the inner pipe body and the inner surface of the outer pipe body and combined with the steel ring, so that service lives of the inner and outer pipe bodies are prolonged beneficially, and maintenance cost is lowered greatly.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a steel frame reinforced 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 temperature of the liquid or gas injected in the oil...

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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; A necessary protective structure needs to be added between the inner surface of the tube and the outer surface of the inner tube to achieve long-term stability

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