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Manufacturing method and device for deep-hole ion nitriding oil pipe

A technology for nitriding oil pipes and oil pipes, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve problems such as the inability to obtain an effective nitride layer.

Inactive Publication Date: 2013-02-06
牛君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that an effective nitriding layer cannot be obtained deep in the inner hole of the oil pipe during ion nitriding, the patent of the present invention provides a preparation method for deep hole ion nitriding oil pipe

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  • Manufacturing method and device for deep-hole ion nitriding oil pipe

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0012] figure 1 It is a schematic diagram of equipment of the present invention, in the figure:

[0013] 1. Oil pipe, 2. Nitriding furnace, 3. Deep hole nitriding reinforced anode, 4. Closing device, 5. Air inlet, 6. Vacuum suction port, 7. Air supply device, 8. Vacuum pump.

[0014] The technical scheme that the present invention adopts for realizing its purpose is: Make each oil pipe form an independent closed flow channel, the gas medium flows into the inner hole of the oil pipe from one end of the pipe and then flows out of the oil pipe from the other end to ensure the depth and uniformity of the atmosphere in the oil pipe. The anode, the oil pipe and the deep hole nitriding strengthened anode are coaxial, so that the gas medium entering the oil pipe is fully ionized and maintains a strong and uniform potential, so that the ions after th...

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Abstract

The invention discloses a manufacturing method and device for a deep-hole ion nitriding oil pipe. The technical scheme for achieving the aim of the invention is as follows: each oil pipe is enabled to form an independent closed overflow channel; a gas medium flows into an inner hole of the oil pipe from one end of the oil pipe and flows out of the oil pipe from the other end of the oil pipe, so that the atmospheric depth and uniformity in the oil pipe are ensured; meanwhile, a deep-hole nitriding-reinforced anode is additionally arranged inside the oil pipe; the oil pipe is coaxial with the deep-hole nitriding-reinforced anode, so that the gas medium entering the oil pipe is fully ionized and maintains powerful and uniform potential and ions formed by ionizing the medium uniformly impact the inner wall of the oil pipe for nitriding the ions to obtain a uniform ion nitriding layer. For the treated oil pipe, the depth and the hardness of the nitriding layer at the deep part of the inner hole respectively reach the technical standards.

Description

technical field [0001] The invention relates to a method for preparing an oil pipe used in an oil field, in particular to a method and a device for preparing a deep-hole ion nitriding oil pipe. Background technique [0002] In the process of oil production in the oil field, the tubing and casing are often scrapped due to corrosion and wear. The reason is that there are a large number of corrosive media in the formation, mainly hydrogen sulfide gas, CO 2 Gases, sulfate radical compounds and high minerals, etc. These substances will cause fatal corrosion to the oil casing when dissolved and mixed in the well fluid. Just aggravated the corrosion rate of oil casing pipe even more. Corrosion and wear have been the main reasons for the failure of oil casings. [0003] At present, most of the known anti-corrosion oil casings are coated with anti-corrosion and wear-resistant materials on the inner wall, sintered glass in the inner hole, composite plastic material in the inner hole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/36
Inventor 牛君
Owner 牛君