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Wellhead device corrosion detection and evaluation method

A wellhead device and corrosion detection technology, which is applied to measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of non-destructive testing and evaluation of corrosion of wellhead devices, and achieve the effect of guiding on-site production management

Pending Publication Date: 2020-12-01
PETROCHINA CO LTD
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a method for detecting and evaluating the corrosion of wellhead devices, so as to solve the problem that the corrosion of wellhead devices cannot be non-destructively detected and evaluated in the prior art

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  • Wellhead device corrosion detection and evaluation method
  • Wellhead device corrosion detection and evaluation method
  • Wellhead device corrosion detection and evaluation method

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Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0027] In the present invention, unless stated otherwise, the used orientation words such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the parts themselves in the vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refer to the inner and outer relative to the outline of each component itself, but the above orientation words ...

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Abstract

The invention provides a wellhead device corrosion detection and evaluation method, which comprises the steps that a to-be-detected part on a wellhead device is determined, wherein the wellhead devicecomprises a valve, a multi-way joint and a pup joint, and the to-be-detected part is located on at least one of the valve, the multi-way joint and the pup joint; the wall thickness of the to-be-detected part is detected through ultrasonic C scanning, and the actual wall thickness is obtained; calculation is conductedto obtain a wall thickness threshold of the to-be-detected part according to theparameters of the wellhead device; and the actual wall thickness is compared with a wall thickness threshold value, and whether the corrosion condition of the to-be-detected part meets the requirementor not is judged. The problem that in the prior art, nondestructive detection evaluation cannot be conducted on the corrosion condition of the wellhead device is solved.

Description

technical field [0001] The invention relates to the technical field of oil well detection, in particular to a corrosion detection and evaluation method for a wellhead device. Background technique [0002] With the long-term service of wellhead devices in high-risk oil wells, there may be medium corrosion, sand erosion, H 2 S stress cracking and other problems, and medium corrosion is more common. In order to realize the safety control of high-risk wellhead devices, it is necessary to form an online non-destructive testing and evaluation method for in-service oil and gas wellhead devices in order to provide a guarantee for the intrinsic safety of in-use wellhead devices. Contents of the invention [0003] The main purpose of the present invention is to provide a method for detecting and evaluating corrosion of wellhead devices to solve the problem in the prior art that non-destructive testing and evaluation of corrosion of wellhead devices cannot be performed. [0004] In...

Claims

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Application Information

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IPC IPC(8): G01N17/00G01B21/08
CPCG01N17/00G01B21/08
Inventor 傅登伟邱福寿宫兆波周建平候万勇王凯彭辉蒙永立尼加提·赛买提
Owner PETROCHINA CO LTD
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