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Oil pipe length measuring device and method based on machine vision

A technology of length measurement and machine vision, applied in the direction of measurement devices, optical devices, instruments, etc., can solve the problems of inconvenient installation, easy damage, large measurement errors, etc., to ensure construction quality and progress, low failure rate, and realization of The effect of real-time collection

Inactive Publication Date: 2021-04-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relevant domestic researchers have successively developed the "Contact Type Oil Pipe Length Online Continuous Measuring Instrument", etc., but these online measuring devices have not been effectively popularized and applied due to various problems such as large measurement errors, inconvenient on-site installation, and easy damage. Therefore, so far, the traditional method of manually pulling the tape measure is still mainly used to measure the length of the tubing in the oil field.

Method used

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  • Oil pipe length measuring device and method based on machine vision
  • Oil pipe length measuring device and method based on machine vision
  • Oil pipe length measuring device and method based on machine vision

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a kind of oil pipe length measuring device based on machine vision, comprising a bracket, a balance slide rail 9 and a video acquisition processor 8, the balance slide rail 9 is arranged above the bracket, and the video acquisition processor 8 can be The balance slide rail 9 moves freely, and the video acquisition processor 8 is fixedly connected with the balance slide rail 9 through a locking device.

[0047]The bracket is used to support the balance slide rail 9. A video capture processor 8 is installed on the top of the balance slide rail 9. The video capture processor 8 can move horizontally on the balance slide rail 9 to adjust the monitoring viewing angle and fix the position by a locking device. The video acquisition processor 8 applies the principle of machine vision and based on the method of characteristic image recognition to realize the continuous online non-contact measurement of the oil pipe length.

Embodiment 2

[0049] On the basis of Embodiment 1, the present embodiment provides a machine vision-based oil pipe length measuring device, and the video acquisition processor 8 includes a binocular camera module, a video acquisition module, a video processing module, a video storage module, Feature image processing module, main controller, data storage module, communication module and display module;

[0050] The video processing module, the data storage module, the communication module, the feature image processing module and the display module are all connected to the main controller with electrical signals, the binocular camera group is electrically connected to the video acquisition module, and the video acquisition module is electrically connected to the video processing module. module, and the video processing module is electrically connected to the video storage module.

[0051] Such as figure 2 As shown, the binocular camera module is used to acquire live images synchronously in ...

Embodiment 3

[0053] On the basis of the embodiment, this embodiment provides a machine vision-based oil pipe length measuring device, the bracket is a telescopic bracket, and there are three telescopic brackets, namely the first telescopic bracket, the second The telescopic bracket and the third telescopic bracket, the tops of the three telescopic brackets are connected with the top of the balance slide rail to form a tripod structure.

[0054] The height of the placement of the video acquisition processor 8 is controllable through the telescopic bracket.

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Abstract

The invention belongs to the technical field of petroleum industry measurement, and particularly relates to an oil pipe length measuring device and method based on machine vision, the oil pipe lengthmeasuring device comprises a support, a balance slide rail and a video acquisition processor, the balance slide rail is arranged above the support, and the video acquisition processor can freely movealong the balance slide rail; and the video acquisition processor is fixedly connected with the balance slide rail through a locking device. The support is a telescopic support and can be stored in the bottom space of the balance slide rail in a non-measurement state, and the video acquisition processor can freely move on the balance slide rail, adjust the monitoring visual angle and be fixed after adjustment. According to the invention, a machine vision principle is applied, the continuous on-line non-contact metering of the length of the oil pipe can be realized based on a characteristic image identification method, and the method has the characteristics of low failure rate, high measurement precision and high test efficiency. And meanwhile, the real-time acquisition of on-site video signals can be realized, the on-site construction operation is convenient to monitor, and the construction quality and progress are ensured.

Description

technical field [0001] The invention belongs to the technical field of petroleum industry measurement, and in particular relates to a machine vision-based oil pipe length measurement device and method. Background technique [0002] As the oil field enters the late stage of exploration and development, the output is decreasing year by year, cost reduction and efficiency increase are on the agenda, and more and more repaired tubing is put into production. It is very important to adjust the production process and accurately locate the downhole position of the oil well pump and perforation equipment, especially for coiled tubing drilling. So how to accurately measure the length of the downhole tubing has always been a problem that people generally care about. [0003] Traditional measurement methods include single tube measurement and continuous tube measurement. Single-pipe measurement is to measure the length of each tubing on the ground, and then determine the total length ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02
CPCG01B11/02
Inventor 艾信陆梅于洋田殿龙闫娟樊晨吴利利魏小林刘天宇李明江
Owner PETROCHINA CO LTD