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Wear-resistant corrosion-proof coating composite oil pumping pipe and coating method thereof

A technology for oil extraction pipes and oil pipes, which is applied in pipeline anticorrosion/rust protection, damage protection, pipeline protection, etc., can solve problems such as not fundamentally changed, and achieve the effect of being conducive to popularization and application and considerable economic benefits

Inactive Publication Date: 2003-03-12
BEIJING SINOPERM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many similar patents, and I won’t list them one by one here. The common feature of these patents is that they use mechanical methods to improve the condition of partial wear, without fundamentally changing the friction between steel and steel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The high-strength anti-corrosion and wear-resistant powder coating (patent application number: CN00156203·2) is used to produce a length of 9.6 to 10.2 meters for an oil production plant in a large oil field in China. The inner diameter is 58 mm, and the high-strength wear-resistant and anti-corrosion coating composite oil suction pipe is 2000 meters long. The production method is as follows: 1. Blast and remove the rust on the inner wall of the seamless steel pipe with steel sand blown by air to make it appear metallic luster; Insert it into the spray gun rod of the oil pipe spraying machine, and tighten the bolts that compress the oil pipe; 3. Turn on the oil pipe rotary switch (the oil pipe speed is 156 rpm), and at the same time turn on the powder feeding button (the powder feeding air pressure is set at 0.22MPa) and The oil pipe exits the spraying travel switch (the oil pipe exit speed is 2.4 m / min); 4. When the oil pipe is about to exit the spray gun, the operator...

Embodiment 2

[0013] Using elastic anti-corrosion and wear-resistant powder coating (patent number: CN97111379·3) to produce 9.6-10.2 meters, 58 mm inner diameter, 500 meters of wear-resistant and anti-corrosion coating oil suction pipe for an oil production plant in a large oil field in China. The production process is as follows: 1. Sandblast and derust the inner wall of the seamless steel pipe with steel sand blown by air to make it appear metallic luster; 2. Put the steel pipe in the drying room and wait until it is heated to 320 ° C, take the steel pipe out of the drying room and immediately Insert it into the spray gun rod of the oil pipe spraying machine, and tighten the relevant bolts; 3. Turn on the oil pipe rotary switch (the oil pipe speed is 156 rpm), and at the same time turn on the powder feeding button (the powder feeding air pressure is set at 0.22MPa) and The oil pipe exits the spraying travel switch (the oil pipe withdraws at a speed of 2.4 m / min); 4. When the oil pipe is a...

Embodiment 3

[0015] Using anti-corrosion and wear-resistant powder coating (patent number: CN87100920·X) to produce 9.6-10.2 meters long, 58 mm inner diameter, and 50 meters of wear-resistant and anti-corrosion coating for an oil production plant in a large domestic oil field. Used in water injection wells for anti-corrosion tests. The production process is as follows: 1. Blast and derust the inner wall of the seamless steel pipe with steel sand sent by wind to make it appear metallic luster;

[0016] 2. Put the steel pipe into the drying room and wait until it is heated to 320°C, take out the steel pipe from the drying room and insert it into the spray gun rod of the oil pipe spraying machine immediately, and tighten the relevant bolts;

[0017] 3. Turn on the oil pipe rotary switch (the oil pipe speed is 156 rpm), and at the same time turn on the powder feeding button (the powder feeding air pressure is set at 0.22MPa) and the oil pipe exit spraying travel switch (the oil pipe exit speed...

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Abstract

A composite sucker pipe with coated antiwear and anticorrosion layer is disclosed. Its paint is disclosed by CN 87100920.X, CN 97111379.3 and CN 00126503.2. Its coating method is characterized by that in coating procedure the sucker pipe is rotating relatively to the sprayer and the air pressure and the powder flow are constant. Its advantage is long service life elongated by 3-5 times.

Description

(1) Technical field [0001] The invention relates to a composite oil suction pipe whose inner wall is coated with a wear-resistant and anti-corrosion coating and a coating method thereof. (2) Background technology [0002] Rod pumps (tie rod piston pumps) are commonly used in oil fields to extract the mixture of crude oil and water from the downhole. Due to the small inner diameter (60-70mm) and long length (1000-2000 meters) of the tubing, the sucker rod and its coupling are easy to damage the inner wall of the tubing. Cause eccentric wear until the oil pipe is worn out. Oil fields have also adopted many technical measures and many patented inventions, but these technologies and patents use mechanical devices to reduce the degree of eccentric wear of sucker rods and couplings. Up to now, the eccentric wear of oil sucker pipes in various oil fields is still very serious . CN01220585.0 discloses a "device for releasing eccentric wear of the sucker rod with weight", which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L58/04
Inventor 卢选伟谢蕊贤
Owner BEIJING SINOPERM TECH
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