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Cold welding process repairing method for oil field storage tank, without hot work

A repair method and cold welding technology, applied in the direction of cold-pressed connections, connecting components, pipes/pipe joints/fittings, etc., can solve the problems of difficulty and danger of repair, difficulty in continuous production, cracking of welds, etc., and achieve low repair costs. , the effect of good mechanical ability and compressive strength, strong grip and adhesion

Inactive Publication Date: 2021-03-19
郑州新锐石油工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The storage tanks used in the production process of the oil field will corrode and crack the weld seam as time goes by, which brings certain difficulties to continuous production, and it is difficult and dangerous to repair them in time

Method used

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  • Cold welding process repairing method for oil field storage tank, without hot work

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] S1: Select the suitable glue; S2: Clean the surface paint, rust, oil stain and corroded loose layer around the leakage point; S3: Prepare cold welding repair glue according to the formula and weight ratio, and prepare 100kg of cold welding repair Glue, the formula of specific weight part is as follows: 35kg of bisphenol A type epoxy resin, 5kg of bisphenol F type epoxy resin, 10kg of ethyl cyanoacrylate, 50kg of silicon micropowder; The repair glue is evenly applied to the damaged leakage point of the oil field storage tank, and the damaged part is first filled and then applied. When applying the glue, it should move in one direction, and the speed should not be too fast; S5: bonding and curing; after steps S4 After glue application, wait for the bonding between the cold welding repair glue and the damaged pipe wall and the curing of the cold welding repair glue; S6: Inspection and post-processing: after the inspection achieves the expected plugging purpose, polish the e...

Embodiment 2

[0038]S1: Select the suitable glue; S2: Clean the surface paint, rust, oil stain and corroded loose layer around the leakage point; S3: Prepare cold welding repair glue according to the formula and weight ratio, and prepare 100kg of cold welding repair Glue, the formula of specific weight part is as follows: 40kg of bisphenol A type epoxy resin, 10kg of bisphenol F type epoxy resin, 10kg of ethyl cyanoacrylate, 40kg of silicon micropowder; The repair glue is evenly applied to the damaged leakage point of the oil field storage tank, and the damaged part is first filled and then applied. When applying the glue, it should move in one direction, and the speed should not be too fast; S5: bonding and curing; after steps S4 After glue application, wait for the bonding between the cold welding repair glue and the damaged pipe wall and the curing of the cold welding repair glue; S6: Inspection and post-processing: after the inspection achieves the expected plugging purpose, polish the e...

Embodiment 3

[0040] S1: Select the suitable glue; S2: Clean the surface paint, rust, oil stain and corroded loose layer around the leakage point; S3: Prepare cold welding repair glue according to the formula and weight ratio, and prepare 100kg of cold welding repair Glue, the formula of specific weight part is as follows: 37kg of bisphenol A type epoxy resin, 10kg of bisphenol F type epoxy resin, 8kg of ethyl cyanoacrylate, 45kg of silicon micropowder; The repair glue is evenly applied to the damaged leakage point of the oil field storage tank, and the damaged part is first filled and then applied. When applying the glue, it should move in one direction, and the speed should not be too fast; S5: bonding and curing; after steps S4 After glue application, wait for the bonding between the cold welding repair glue and the damaged pipe wall and the curing of the cold welding repair glue; S6: Inspection and post-processing: after the inspection achieves the expected plugging purpose, polish the e...

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Abstract

The invention discloses a cold welding process repairing method for an oil field storage tank, without hot work, which comprises the steps that according to different construction conditions, surfacetreatment is conducted on the periphery of a leakage point of an oil field storage tank, and surface paint, rust, greasy dirt and a corroded loose layer on the periphery of the leakage point are completely removed; cold welding repair glue is prepared; gluing is conducted: the prepared cold welding repair glue is uniformly coated on the damaged leakage point part of the oil field storage tank, thedamaged part is firstly filled and leveled up, and then coated; bonding and curing are conducted; and after an expected leaking stoppage purpose is achieved through inspection, redundant viscose is ground, and the appearance of the bonding portion is kept attractive and smooth. The cold welding process repairing method for an oil field storage tank, without hot work, provided by the invention islow in repairing cost and short in repairing period, a special cold welding repairing glue bonding technology is adopted, good mechanical capacity and compressive strength can be provided, and for oilfield storage tank pipe wall damage repairing, the high grabbing force and adhesive force are achieved, and it is guaranteed that the repairing and reinforcing effect is effective for a long time.

Description

technical field [0001] The invention belongs to the technical field of repairing oilfield storage tanks, and in particular relates to a method for repairing oilfield storage tanks with no fire and cold welding process. Background technique [0002] Cold welding technology refers to a new technology that uses a reasonable process, selects appropriate chemical bonding materials, and connects the same material or dissimilar materials to achieve connection, sealing, holding, and functional coating. Construction, known as "cold welding technology". As storage equipment for oil products and various liquid chemicals, storage tanks are an important part of petrochemical equipment and storage and transportation system facilities, and are widely used. [0003] The storage tanks used in the production process of the oil field will corrode and crack the weld seam with the extension of time, which will bring certain difficulties to continuous production, and timely repair will be diffic...

Claims

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Application Information

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IPC IPC(8): F16L55/16F16L55/18F16B11/00
CPCF16L55/16F16L55/18F16B11/004
Inventor 胜瑞兴徐旺
Owner 郑州新锐石油工程技术有限公司
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