A method for detecting the burial status of submarine pipelines

A detection method and technology for submarine pipelines, applied in seismic signal processing and other directions, can solve the problems of complex detection tasks, high cost, long cycle, etc., and achieve the effects of avoiding economic losses, low cost and small size

Inactive Publication Date: 2016-01-20
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will lead to the problems of complex detection tasks, high difficulty, high cost and long cycle

Method used

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  • A method for detecting the burial status of submarine pipelines
  • A method for detecting the burial status of submarine pipelines
  • A method for detecting the burial status of submarine pipelines

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] 101: Fix the sound sensor at any position in the pipeline detector, acquire the sound data in the pipeline, and transmit the sound data to the host computer;

[0029] The detailed operation of this step is: fix the sound sensor at any position in the detector in the pipeline, put the inner detector into the pipeline for inspection, measure the sound data in the pipeline, and after the inspection is completed, download the sound data recorded by the inner detector to Host computer for data processing.

[0030] Wherein, the embodiment of the present invention does not limit the models of the sound sensor and the in-pipe detector, as long as the device can complete the above functions, for example, the in-pipe detector can be a cyl...

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Abstract

The invention discloses a method for detecting a burying condition of a submarine pipeline. The method comprises utilizing grouping voice data after fast Fourier transform to make the spectrogram of an array subset, making the statistical histogram of spectral distribution according to the spectrogram, setting the comparing intervals of the grouping voice data, carrying out subtraction on histogram vectors corresponding to the grouping voice data with a subscript difference delta1, obtaining the square values of the models of the histogram vectors to obtain a difference value data sequence, obtaining a fitting result function according to the difference value data sequence and the sampling number of the voice data of a pipeline burying transition section, carrying out peak detection, judging a statistical histogram corresponding to peak values and recognizing the burying condition of the pipeline. According to the method, the detecting period is shortened, detecting difficulty and cost are reduced, the precise judging standard of the full burying condition and the exposing condition of the pipeline is provided, construction staff can find that situation that the pipeline is exposed in time, economic losses are avoided, and multiple needs in actual application are met.

Description

technical field [0001] The invention relates to the field of pipeline detection, in particular to a method for detecting the burial status of a submarine pipeline. Background technique [0002] With the expansion of my country's offshore oil exploitation scale, the construction of submarine oil and gas pipelines has gradually reached its peak. Large companies such as CNOOC, PetroChina, and Sinopec have built hundreds of kilometers of submarine pipelines in Bohai Bay alone. Submarine pipeline is an offshore oil project with high investment and high risk, and it plays a vital role in the production of offshore oil and gas fields. The marine environment where submarine pipelines are located is extremely complex, affected by natural factors such as wind waves, ocean currents, and storm surges, there are generally safety hazards such as exposure and suspension. Submarine pipelines are suspended and exposed for a long time, and are prone to fatigue fractures under the impact of w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
Inventor 陈世利徐天舒靳世久李一博黄新敬
Owner TIANJIN UNIV
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