Production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring

A distributed optical fiber and profile monitoring technology, applied to thermometers, thermometers with physical/chemical changes, measurement, etc., can solve problems such as long test time, high test cost, and low test efficiency

Active Publication Date: 2019-10-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, flow measurement instruments such as turbine flowmeters, ultrasonic flowmeters, electromagnetic flowmeters, conductivity flowmeters, etc. are often used to test the flow rate of each layer in combination with current collecting umbrellas, and the capacitance method, low-energy photon method and other means are used to test the on-site production profile of the oil field. The water content of each layer, the test process usually needs to be carried out in sections, the test time is long, the test cost is high, and the test efficiency is low

Method used

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  • Production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring
  • Production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring
  • Production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring

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Embodiment 1

[0058] A production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring, characterized in that the sound signal reflected by the single-mode acoustic optical fiber and the temperature signal reflected by the multi-mode temperature-sensitive optical fiber are used DTS / DAS The injection-production well production section interpretation module processes it, and finally obtains the real-time flow rate and water content of each production layer of the injection-production well.

[0059] The DTS / DAS injection-production well production profile interpretation module includes a data preprocessing module, an oil and gas well fluid production profile interpretation module and an injection well injection profile interpretation module;

[0060] The data preprocessing module is used to obtain denoised sound data and temperature data related to the flow of formation fluid into the wellbore or the flow of injected ...

Embodiment 2

[0094] Such as figure 1 shown.

[0095] A kind of production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring as described in embodiment 1, use DAS / DTS production profile monitor 7, armored optical cable 8 and weight 9 when realizing above-mentioned monitoring, The DAS / DTS production profile monitor 7 described therein is placed on the ground and is directly connected to the armored optical cable 8; the armored optical cable 8 is attached to the slot on the outer wall of the oil pipe 5; the weight 9 is connected to the lower end of the armored optical cable 8;

[0096] Described DAS / DTS production profile monitor 7 is made up of laser light source, sound signal receiver, temperature signal receiver and computer control and display system; The multi-mode temperature-sensing fiber sends pulsed laser light; the sound signal receiver receives the sound signal reflected from the single-mode sound-se...

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Abstract

The invention provides a production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring. The production profile monitoring method comprises the following step: treating a sound signal reflected back by a single-mode sound sensing optical fiber and a temperature signal reflected back by the multi-mode temperature sensingoptical fiber by using a DTS / DAS injection and production well production profile explanation model, thereby finally obtaining a real-time flow and a water content of all production layer sections ofan injection and production well. Compared with an existing production profile testing technology, the production profile monitoring method provided by the invention can complete the all-well-sectionproduction profile testing through one-time downhole operation, can realize real-time, long-term or temporary monitoring of the production profile of the injection and production well, can acquire the flow and the water content parameters of all production well sections in a real-time manner, can judge the production contribution conditions of all the well sections in a real-time manner, and canevaluate the downhole operation measures of the injection and production well and the production effect of production parameter adjustment in a real-time manner.

Description

technical field [0001] The invention relates to a production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring, and belongs to the technical field of oil and gas exploitation monitoring. Background technique [0002] In the process of oilfield production, it is very important to know the production profiles of production wells and injection wells in time to improve injection-production efficiency and optimize injection-production parameters. At present, flow measurement instruments such as turbine flowmeters, ultrasonic flowmeters, electromagnetic flowmeters, conductivity flowmeters, etc. are often used to test the flow rate of each layer in combination with current collecting umbrellas, and the capacitance method, low-energy photon method and other means are used to test the on-site production profile of the oil field. For the moisture content of each layer, the test process usually needs to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/07E21B49/00G01H9/00G01K11/32
CPCE21B47/00E21B49/00G01H9/006G01K11/32E21B47/07Y02P90/02
Inventor 刘均荣刘隆旭
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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