High-pressure resistant oil and gas pipeline

A technology for oil and gas pipelines and high pressure resistance, which is applied in the field of natural gas pipes and oil transportation, can solve the problems of poor thermal insulation capacity of steel medium, shorten the service life of pipes, and reduce cost difficulties, so as to improve the transportation pressure, prolong the service life, and reduce the investment cost. and the effect of oil and gas transportation costs

Inactive Publication Date: 2011-05-11
TIANJIN WATERLINE PIPELINE ENG CO LTD
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Problems solved by technology

With the increasing pressure requirements for oil and gas pipelines and the promulgation of national energy conservation and emission reduction policies, oil and gas pipelines will develop towards high-grade steel and thin pipe walls. For example, the use of X100 pipes saves about 30% of the cost compared with X65 and X70, and saves pipeline construction. The cost is 10% to 12%, but the high steel grade and thin pipe wall also have the following problems: 1. When the steel grade of the pipe exceeds X120 and X125, it is very difficult to reduce the cost by simply increas

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  • High-pressure resistant oil and gas pipeline
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Embodiment Construction

[0019] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0020] A prestressed concrete oil and gas pipeline, including a steel pipe 2, the steel pipe can be rolled and welded by Q235, X52, X65, X70, X80, X120 materials used for oil and gas pipelines, and the thickness is 2-50mm. Example steel pipe selection X70, the thickness is 8mm steel plate roll welding, the inner wall of the steel pipe can be coated with the liquid epoxy-based paint of the prior art, wherein a steel ring 1 is welded coaxially at the two ends of the steel pipe respectively, Between the two steel rings, the reinforcing bar skeleton 4 is coaxially fixed. The reinforcing bar skeleton can be made of longitudinal reinforcing bars and circumferential reinforcing bars, or can be made of N longitudinal reinforcing bars coaxially fixing...

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Abstract

The invention relates to a high-pressure resistant oil and gas pipeline, which comprises a steel pipe. A steel ring is coaxially and fixedly arranged at two ends of the steel pipe respectively, a steel bar framework is coaxially and fixedly arranged between the two steel rings, concrete is coaxially and fixedly arranged on the outer wall of the steel pipe, a prestressed steel wire is wound on the outer wall of the concrete, and protective layers are fixedly arranged on the outer wall of the concrete and the outer wall of the prestressed steel wire. The high-pressure resistant oil and gas pipeline has simple integral structure and scientific and reasonable design, effectively reduces the consumption of steels, reduces the production cost, prolongs the service life, and has simple process and good corrosion resistance.

Description

technical field [0001] The invention relates to the field of pipelines for transporting oil and natural gas, in particular to a high-pressure resistant oil and gas pipeline. Background technique [0002] At present, the oil and gas pipelines on the market are all steel pipes. The wall thickness of steel pipes is generally 8-60mm according to the pipe diameter and operating pressure. The pipe joints are connected by welding, and then an anti-corrosion layer is made on the outer wall of the pipe. With the increasing pressure requirements for oil and gas pipelines and the promulgation of national energy conservation and emission reduction policies, oil and gas pipelines will develop towards high-grade steel and thin pipe walls. For example, the use of X100 pipes saves about 30% of the cost compared with X65 and X70, and saves pipeline construction. The cost is 10% to 12%, but the high steel grade and thin pipe wall also have the following problems: 1. When the steel grade of th...

Claims

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Application Information

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IPC IPC(8): F16L9/153
Inventor 赵斌张亮
Owner TIANJIN WATERLINE PIPELINE ENG CO LTD
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