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Special-purpose protection dope for petroleum pipe/drill pipe and its preparation method and construction method

A technology for protective coatings and construction methods, applied in drill pipes, drilling equipment, polyester coatings, etc., can solve the problems of not fully meeting the anti-corrosion requirements of oil casing, oil pipe and drill pipe, poor long-term adhesion, and high cost, achieving Cost-effective, good rust, and low cost

Inactive Publication Date: 2008-08-13
江阴市天邦涂料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost, easy precipitation and poor long-term adhesion of the coating, it cannot fully meet the anti-corrosion requirements of oil casing, oil pipe and drill pipe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0046] (1) In this experiment, the tin plate is used as the substrate, the specification is 50×150, and the special protective coating for oil pipe / drill pipe is black. The preparation of the paint film model is carried out according to GB / T1727, and the plate is made according to 2.0g / dm when painting. The product performance is compared with the commercially available acrylic paint in Table 1

[0047] Table I:

[0048] project

experiment example 2

[0049] Experimental example 2: application test of drill pipe

[0050] After being applied on the production line of a certain unit, compared with the commercially available acrylic paint, it has good workability, strong sag resistance, good appearance of the coated drill pipe, and significantly reduced customer complaints; the coating film is flame retardant and dry, and the coating High efficiency, significantly increased output; good fullness, strong adhesion; low paint odor, environmentally friendly; weather resistance, long rust-proof period.

experiment example 3

[0051] Experimental example 3: application test of bushing

[0052] After being applied on the production line of a certain unit, compared with the commercially available acrylic paint, the customer has carried out cost accounting, and the average casing can save 5 yuan per ton. If the unit is calculated at 200,000 tons per year, it can save money after all of them are used 1 million yuan. Not only save money, but also improve overall performance.

[0053] The special protective coating for oil pipe / drill pipe can also include the following components by weight percentage:

[0054] serial number

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Abstract

The invention relates to a protecting paint special for petroleum pipe / drill pipe, and a construction method and a preparation method thereof. The paint is composed of modified acrylic resin and modified alkyd resin as main film-forming substances, formaldehyde resin, chlorinated polyether resin and epoxy resin, etc. as modifiers, nontoxic tinting pigment, nanometer micro powder, environment-friendly solvent, nontoxic excluder pigment, additive, accessory ingredient, etc.; the paint is provided with the following advantages: low cost, good storage stability, not prone to deposit, good application property, strong anti-sagging property, coat flame retarding, good drying and fullness, strong adhesion, weathering resistance, rust prevention, non-toxicity and environment-friendly. The protecting paint special for petroleum pipe / drill pipe is specially designed for short-term antiseptic coat, such as sleeve of petroleum casing pipe, oil well pipe, oil well drill pipe, etc.

Description

technical field [0001] The invention relates to a paint, in particular to an outer wall protective paint specially used for petroleum casing, oil well pipe, oil well drill pipe, etc., as well as its preparation method and construction method. It is mainly used as short-term anti-corrosion coating for oil casing, oil pipe and outer wall of drill pipe, etc. It belongs to the technical field of chemical coatings. Background technique [0002] Oil casing, oil pipe and drill pipe are mainly made of carbon steel, microalloy and low alloy steel, and chemical corrosion is the main cause of their damage. [0003] The damage of oil casing, tubing and drill pipe will lead to serious consequences, even the scrapping of the entire oil well, resulting in high economic losses. At present, acrylic resin coatings are mainly used as short-term anti-corrosion coatings for outer walls and the like. Due to the high cost, easy precipitation and poor long-term adhesion of the coating, it cannot...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D167/08C09D7/12E21B17/00C09D163/00C09D159/00
Inventor 吴立新
Owner 江阴市天邦涂料股份有限公司
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