Coating device for spraying for petroleum casing pipe

A technology for coating device and oil casing, applied in the direction of injection device, etc., can solve the problems of impurity integration and affecting the quality of casing coating layer, and achieve the effect of improving quality, removing potential safety hazards and protecting physical health.

Inactive Publication Date: 2017-06-27
CHENGDU DAMO PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a coating device for spraying oil casing pipes, which solves the problem that when a paint pool is used to coat oil casing pipes, the paint in the entire paint pool is exposed to the air for a long time, and impurities will also be incorporated. Among them, it will affect the quality of the coating layer of the casing, and at the same time, there is no need to build a large coating pool, which not only reduces the cost, but also eliminates the potential safety hazard of the coating pool

Method used

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  • Coating device for spraying for petroleum casing pipe
  • Coating device for spraying for petroleum casing pipe
  • Coating device for spraying for petroleum casing pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1-Figure 4 As shown, the coating device for spraying petroleum casing in the present invention includes nozzle I1, nozzle II3, delivery pipeline 2, pump and paint storage tank, and said nozzle I1 and nozzle II3 respectively pass through a delivery pipeline 2 and pump Connected, the pump sends the paint in the paint storage tank into the delivery pipeline 2, and a spray ring 5, a supporting device and a driving device are arranged between the nozzle I1 and the delivery pipeline 2 connected to it;

[0040] The spray ring 5 is hollow, and a spray hole I6 is provided on the outer surface of the spray ring 5. The spray hole I6 communicates with the hollow of the spray ring 5, and the liquid inlet end of the nozzle I1 is far away from the hollow of the spray hole I6. One end of the pump is connected; the inner surface of the spray ring 5 is provided with a paint inlet hole I7, the paint inlet hole I7 communicates with the hollow of the spray ring 5, and the en...

Embodiment 2

[0045] The present invention is based on embodiment 1, and the present invention is further described.

[0046] Such as Figure 1-Figure 4 As shown, the coating device for spraying petroleum casing in the present invention also includes a paint inlet pipe 8, and the delivery pipeline 2 communicates with the paint inlet hole I7 through the paint inlet pipe 8; the support device includes a support rod 9 and a support Plate 10, the support rod 9 is an L-shaped rod, one end of which is connected to the end of the paint inlet pipe 8 side away from the paint inlet I7, and the other end is connected vertically to the support plate 10; the driving device includes rollers 11 and The motor, the roller 11 is an end away from the support rod 9 on the support plate 10, the motor drives the roller 11 to rotate and drives the support device to move.

[0047] Further, a reinforcing rib 12 is provided on the supporting rod 9 , the reinforcing rib 12 is connected to one side of the supporting ...

Embodiment 3

[0052] The present invention is based on embodiment 1, and the present invention is further described.

[0053] Such as Figure 1-Figure 4 As shown, the coating device for spraying oil casing in the present invention also includes a winding device 13 for winding the delivery pipeline 2 between the pump and the spray ring 5 . As the spraying operation progresses, the entire device continuously moves to the oil casing mouth, and shortens the distance between the spray ring 5 and the pump 3, so the redundant delivery pipeline 2 between the spray ring 5 and the pump 3 is connected to Gather and wrap up. The winding device can choose the existing device for winding electric wires.

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Abstract

The invention discloses a coating device for spraying oil casing pipes, comprising nozzle I, nozzle II and a conveying pipeline, a spray ring is arranged between the nozzle I and the conveying pipeline, the spray ring is hollow, and spray holes are arranged on its outer surface Ⅰ, nozzle Ⅰ is connected with spray hole Ⅰ; there is a paint inlet hole Ⅰ on the inner surface of the spray ring, and the delivery pipe is connected with the paint inlet Ⅰ; a fixed ring is arranged between the nozzle Ⅱ and the delivery pipeline, and the fixed ring is hollow. The inner surface is provided with spray hole II, and the nozzle II is connected with the spray hole II; the outer surface of the fixed ring is provided with a paint inlet hole II, and the delivery pipe is connected with the paint inlet hole II. Nozzle I sprays paint on the inner wall of the casing, and nozzle II sprays paint on the outer wall of the casing. This spraying device does not need to build a paint pool, so it avoids the situation that the paint is exposed to the air for a long time and is mixed with impurities, improves the quality of the casing coating layer, and reduces the cost.

Description

technical field [0001] The invention relates to a casing spraying device, in particular to a coating device for spraying petroleum casing. Background technique [0002] Oil casing is a steel pipe used to support the walls of oil and gas wells to ensure the normal operation of the entire oil well after the drilling process and completion. Each well uses several layers of casing according to different drilling depths and geological conditions. After the casing is lowered into the well, cement should be used for well cementing. Casing can be divided into: conduit, surface casing, technical casing and oil layer casing according to the usage. [0003] Before the oil casing is lowered into the wellbore, its inner wall needs to be coated with a layer of anti-corrosion layer that is both lubricating and wear-resistant. At present, the commonly used oil casing inner coating technology is to soak the pretreated oil casing in the anti-corrosion coating pool for a certain period of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B13/06B05B13/04
CPCB05B13/06B05B13/04B05B13/0627
Inventor 贺昶明
Owner CHENGDU DAMO PETROLEUM TECH CO LTD
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