RU94036135A - Method for remote petroleum leak detection of trunk pipeline - Google Patents

Method for remote petroleum leak detection of trunk pipeline

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Publication number
RU94036135A
RU94036135A RU94036135/06A RU94036135A RU94036135A RU 94036135 A RU94036135 A RU 94036135A RU 94036135/06 A RU94036135/06 A RU 94036135/06A RU 94036135 A RU94036135 A RU 94036135A RU 94036135 A RU94036135 A RU 94036135A
Authority
RU
Russia
Prior art keywords
wavelength
luminosity
relative
brightness
determined
Prior art date
Application number
RU94036135/06A
Other languages
Russian (ru)
Other versions
RU2073816C1 (en
Inventor
Р.М. Алеев
Е.И. Алешко
В.Н. Чепурский
Original Assignee
Научно-производственная фирма "Оптойл"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Научно-производственная фирма "Оптойл" filed Critical Научно-производственная фирма "Оптойл"
Priority to RU94036135A priority Critical patent/RU2073816C1/en
Publication of RU94036135A publication Critical patent/RU94036135A/en
Application granted granted Critical
Publication of RU2073816C1 publication Critical patent/RU2073816C1/en

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  • Pipeline Systems (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

FIELD: leak detection of trunk petroleum pipeline. SUBSTANCE: method for remote petroleum leak detection of trunk pipeline includes aerial photography of pipeline route heat field, determining threshold luminosity, determining location of local parcels with abnormal temperature, recording luminosity of the heat field of the local parcels. Laser sounding of underlaying surface of the pipeline route is carried out additionally using at least three wavelengths of radiation absorption by the main components of petroleum gas fraction, and reference wavelength which locates in the area being free of radiation absorption by these components, but rather close to those. Relative luminosities of underlaying surface are determined for each wavelength under investigation, and each image decomposition element as relation of underlaying surface luminosity to luminosity of underlaying surface on the reference wavelength. Then logarithms of relative luminosities and mean values of them are determined. Leak point is determined as location of parcel with abnormal temperature for which logarithm of relative image luminosity for the first wavelength is differed from mean value for entire parcels being investigated. Logarithms of relative image luminosities for the three wavelength are as follows: (1-/+0.2):(1.4-/+0.2):(1.2-/+0.2). EFFECT: accident prevention.

Claims (1)

Использование: дагностика действующих магистральных трубопроводов, предназначенных для транспортироэки нефти. Цель: возможность ранней диагностики утечки нефти. Сущность изобретения: в способе дистанционного обнаружения утечек нефти из магистральных трубопроводов, вклющающем аэросъемку теплового поля трассы трубопровода, определение пороговых значений яркости, определение местоположения локальных участков с аномальной температурой, фиксирование значения яркости теплового поля, локальных участков, дополнительно проводят лазерное зондирование подстилающей поверхности трассы трубопровода не менее чем на трех исследуемых длинах волн поглощения излучения основными компонентами газовой фракции нефти и на опорной длине волны, которая расположена в зоне, свободной от поглощения излучения этими компонентами, но достаточно близко к ним, определяют для каждой исследуемой длины волны и каждого элемента разложения изображения относительные яркости подстилающей поверхности как отношение яркости подстилающей поверхности для каждой длины волны к яркости подстилающей поверхности на опорной длине волны, затем определяют логарифмы относительных яркостей и их средние значения, а место утечки определяют по местоположению участка с аномальной температурой, для которого логарифм относительной яркости изображения для первой длины волны отличается от среднего значения для всего контролируемого участка на заданное пороговое значение, а логарифмы относительных яркостей изображений для трех длин волн составляют пропорцию (1±0,2) : (1,4±0,2) : (1,2±0,2). Положительный эффект: возможность предотвращения аварий на магистральных трубопроводах.Usage: diagnostics of existing trunk pipelines designed for transportation of oil. Purpose: the possibility of early diagnosis of oil spills. The inventive method for remote detection of oil leaks from pipelines, including aerial photography of the thermal field of the pipeline route, determining threshold brightness values, determining the location of local sections with an abnormal temperature, fixing the brightness values of the thermal field, local sections, additionally conduct laser sensing of the underlying surface of the pipeline route at least three studied wavelengths of radiation absorption by the main components of the gas fra oil and at a reference wavelength, which is located in a zone free of radiation absorption by these components, but close enough to them, determine for each studied wavelength and each element of image decomposition the relative brightness of the underlying surface as the ratio of the brightness of the underlying surface for each wavelength to the brightness of the underlying surface at the reference wavelength, then the logarithms of the relative brightnesses and their average values are determined, and the leak location is determined by the location of the section with a the nominal temperature, for which the logarithm of the relative brightness of the image for the first wavelength differs from the average value for the entire controlled area by a predetermined threshold value, and the logarithms of the relative brightness of the images for three wavelengths are in the proportion (1 ± 0.2): (1.4 ± 0.2): (1.2 ± 0.2). Positive effect: the ability to prevent accidents on trunk pipelines.
RU94036135A 1994-09-27 1994-09-27 Method of remote detection of oil leakage from main pipe line RU2073816C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94036135A RU2073816C1 (en) 1994-09-27 1994-09-27 Method of remote detection of oil leakage from main pipe line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94036135A RU2073816C1 (en) 1994-09-27 1994-09-27 Method of remote detection of oil leakage from main pipe line

Publications (2)

Publication Number Publication Date
RU94036135A true RU94036135A (en) 1996-07-10
RU2073816C1 RU2073816C1 (en) 1997-02-20

Family

ID=20160924

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94036135A RU2073816C1 (en) 1994-09-27 1994-09-27 Method of remote detection of oil leakage from main pipe line

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RU (1) RU2073816C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2553843C2 (en) * 2013-08-02 2015-06-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирская государственная автомобильно-дорожная академия (СибАДИ)" Method for remote diagnostics of state of linear part of underground main pipelines
RU2771575C1 (en) * 2021-08-27 2022-05-05 федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)" (МГТУ им. Н.Э. Баумана) Remote detection of propane leaks

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Publication number Publication date
RU2073816C1 (en) 1997-02-20

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Effective date: 20060928