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Glass products for inner lining of steel tube, and preparation method

A manufacturing method and technology for inner layer glass, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of wear resistance, different elastic coefficients of the surface layer and core, and high temperature resistance, so as to avoid Corrosive temperature environment, excellent chemical and physical properties, good resistance to thermal shock

Inactive Publication Date: 2006-12-06
SIPING EASTOCEAN PETROCHEM EQUIP MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ①. The complete coating of Ni-P plating technology has obvious advantages in corrosion resistance, but in recent years, it has been found that due to technological reasons, it is impossible to obtain non-porous coatings, and the serious environmental pollution of the process has forced it to reduce its use or stop production
[0004] ② Nitriding technology is better in terms of corrosion resistance and wear resistance, but the surface hardness of the material increases after nitriding, which changes the hardness of the thread and affects the sealing performance of the thread, and causes the elastic coefficient of the surface layer and the core to be different. For deep wells In oil fields, once the tubing is heavy and the surface is cracked, stress concentration will occur and the tubing will be broken, so there are certain limitations
[0005] ③. Coating tube technology has corrosion resistance but is not wear-resistant, and its application also has certain limitations
[0006] ④. FRP pipes have good corrosion resistance, but their strength is low and they are not resistant to high temperatures, so oil production wells cannot be used
Wells stuck due to wax plugging often occur, and wax deposition reduces pipeline transportation area, oil transportation capacity, production decreases, and energy consumption increases, which seriously affects the output efficiency of wax deposition wells

Method used

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  • Glass products for inner lining of steel tube, and preparation method
  • Glass products for inner lining of steel tube, and preparation method
  • Glass products for inner lining of steel tube, and preparation method

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Experimental program
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Embodiment Construction

[0039] The main equipment for preparing the product of the present invention includes:

[0040] Reciprocating vibrating sieve (glass material mixed evenly); glass melting furnace 4-12 hole round furnace, melting crucible is 80-130L; sandblasting air compressor is 3-20M 3 / min; 0.1~1.0M for sandblasting tank 3 ;The liner furnace is a 4-10-hole resistance band heating furnace, with a length of 4000-6000mm, a width of 1200-3000mm, a height of 1200-2500mm, two to three temperature sections, a low temperature section of 300~600℃, and a medium temperature section of 400~ 700℃, high temperature section 500~800℃, traction speed 160~200mm / min, 4~9 rows of supports behind the furnace, 7.5~11 meters long, 6~15 rows of supports in front of the furnace, 8~14 meters long.

[0041] Select 20# carbon steel seamless pipe as the steel pipe, with a diameter of Φ60mm, a wall thickness of 4mm, and a length of 8m;

[0042] The raw materials of the inner glass tube are:

[0043] Feldspar (feldspa...

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Abstract

The present invention relates to a composite steel pipe, in the concrete, it is a steel pipe product with inside lining glass. Said product is mainly used in the fields of chemical medium transmission, eccentrical wear and paraffin control of oil-well and oil pipeline buried cold transmission, etc. Said composite steel pipe product is made up by adopting three processes of making glass pipe, sandblasting steel pipe and lining steel pipe with glass pipe.

Description

technical field [0001] The invention relates to a composite steel pipe, in particular to a glass-lined steel pipe product, which is mainly used in the fields of chemical medium transportation, prevention of eccentric wear and wax deposition in oil pumping wells, underground cold transportation of oil pipelines, and the like. Background technique [0002] We know that pipeline anticorrosion technologies mainly include steel pipe Ni-P plating technology, nitriding technology, coating pipe technology, FRP pipeline technology, etc. The above technologies have played a certain role in the field of pipeline anticorrosion for a period of time, but there are still many problems. Disadvantages and deficiencies, specifically in: [0003] ①. The complete coating of Ni-P plating technology has obvious advantages in corrosion resistance, but in recent years, it has been found that due to technological reasons, it is impossible to obtain non-porous coatings, and the serious environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14C03C3/00C03C27/02
Inventor 高原白日忠赵建国
Owner SIPING EASTOCEAN PETROCHEM EQUIP MFG
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