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A kind of powder coating composition for blowout preventer and preparation method thereof

A technology of powder coatings and compositions, which is applied in the field of powder coating compositions for blowout preventers and its preparation, can solve the problems of unreported preparation methods, and achieve the effect of high temperature and autoclave resistance

Active Publication Date: 2022-05-10
海隆石油产品技术服务(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But there is no report about a composition and preparation method of powder coating for blowout preventer

Method used

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  • A kind of powder coating composition for blowout preventer and preparation method thereof
  • A kind of powder coating composition for blowout preventer and preparation method thereof
  • A kind of powder coating composition for blowout preventer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Table 1. Embodiment 1 powder coating formula

[0034]

[0035]

[0036] Preparation method: prepare raw materials according to the weight percentage in Table 1, melt and extrude A, B, C, D, E, F, G through a screw extruder at 105-120 ° C, and obtain an intermediate resin after tableting and crushing, and then the intermediate Bulk resin and H, I, J, K are mixed and melted at 120-130°C, melted and extruded, the tablet is crushed, and then L is added during the grinding process of the air mill (ACM mill) to obtain the powder coating.

[0037] The glass transition temperature TG2 of the prepared powder coating is 109°C, the gel time is 120S, the steel pipe is heated to 230°C, the powder coating is sprayed, and then cured for 90 minutes. The obtained coating can pass the test of the simulated working condition: 107°C / gas phase: 10Mpa (15% hydrogen sulfide, 6% carbon dioxide, 79% CH 4 ) / solvent phase: mixed solvent (toluene 50%, kerosene 50%) / water phase: 5% NaCl solu...

Embodiment 2

[0039] Table 2. Embodiment 2 powder coating formula

[0040]

[0041]

[0042] Preparation method: prepare raw materials according to the weight percentage in Table 2, melt and extrude A, B, C, D, E, F, G through a screw extruder at 105-120 ° C, and obtain an intermediate resin after pressing and crushing, and then the intermediate Bulk resin and H, I, J, K are mixed and melted at 120-130°C, melted and extruded, the tablet is crushed, and then L is added during the grinding process to obtain a powder coating.

[0043] The prepared powder coating TG2 is 115°C, the gel time is 100S, the steel pipe is heated to 230°C, the powder coating is sprayed, and then cured for 90 minutes. The obtained coating can pass the test of simulated working conditions: 107°C / gas phase: 10Mpa (15% hydrogen sulfide , 6% CO2, 79% CH 4 ) / solvent phase: mixed solvent (toluene 50%, kerosene 50%) / water phase: 5% NaCl solution, after 24 hours, the adhesion of the test piece reaches 5A level, and when...

Embodiment 3

[0045] Table 3. Embodiment 3 powder coating formula

[0046]

[0047]

[0048] Preparation method: prepare raw materials according to the weight percentage in Table 3, melt and extrude A, B, C, D, E, F, G through a screw extruder at 105-120 ° C, and obtain intermediate resin after tableting and crushing, and then intermediate Bulk resin and H, I, J, K are mixed and melted at 120-130°C, melted and extruded, the tablet is crushed, and then L is added during the grinding process to obtain a powder coating.

[0049] The prepared powder coating TG2 is 115°C, gel time is 80S, the steel pipe is heated to 230°C, the powder coating is sprayed, and then cured for 90min, the obtained coating can pass the test of simulated working conditions: 107°C / gas phase: 10Mpa (15% hydrogen sulfide , 6% CO2, 79% CH 4 ) / solvent phase: mixed solvent (toluene 50%, kerosene 50%) / water phase: 5% NaCl solution, after 24h the adhesion of the test piece reaches 5A level; Sand for 30 minutes without rev...

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Abstract

The invention relates to the field of oil and gas exploitation, in particular to a powder coating composition for a blowout preventer, which consists of the following components in the following percentages by weight: 0.5-3% of mercaptopropylsilane coupling agent, 5-15% of high-temperature-resistant silicone resin, Bisphenol A epoxy resin 15‑25%, secondary amino coupling agent 0.5‑3%, wollastonite 5‑10%, oxazolidinone epoxy 15‑30%, imidazole accelerator 0.3‑2%, sulfur Urea 3‑8%, phenolic resin 8‑15%, self-lubricating filler 5‑10%, high hardness filler 8‑35%, fumed silica 0.4‑2%. The powder coating prepared by the invention has the characteristics of anti-hydrogen sulfide corrosion and high wear resistance, and can be cured at a high temperature of 220°C / 60min, which can meet the test conditions for the powder coating to pass the simulated oil field mining, and can basically meet the requirements of the blowout preventer service workers. condition; and it can protect the blowout preventer from being worn out by the sand and gravel in the oil and gas within 30 minutes.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a powder coating composition for a blowout preventer and a preparation method thereof. Background technique [0002] The blowout preventer is installed in the process of oil and gas extraction to ensure the quality stability in the process of oil and gas extraction, so as to prevent sudden blowout in the oil field and have the function of a safety valve to avoid accidents. [0003] The use of coatings to protect the blowout preventer can protect the blowout preventer from being worn out by sand and gravel in oil and gas within 30 minutes. The eruption speed of oil-gas mixed sediment is generally 30-40m / s, and the general metal surface sandblasting speed is only 20-20m / s, so the coating on the speed preventer must have two characteristics: (1) High adhesion , the coating can maintain high adhesion and high temperature and high pressure resistance under the impact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D161/06C09D183/04C09D7/61C09D7/63C09D5/03C09D5/08C08G59/50
CPCC09D163/00C09D5/033C09D5/08C08G59/504C08L2205/025C08L2205/035C08K2003/3009C08L63/00C08L83/04C08L61/06C08K13/02C08K3/34C08K5/548C08K5/544C08K3/30C08K3/36C08K3/04C08K5/405
Inventor 蒋艳萍陈海林朱彬彬
Owner 海隆石油产品技术服务(上海)有限公司
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