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Waveguide phase measurement method and device for water content and flow of oil well

A technology of phase measurement and water content, which is applied in the direction of measuring device, fluid velocity measurement, measurement, etc.

Active Publication Date: 2020-01-17
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY +1
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Problems solved by technology

[0004] Aiming at the problems existing in the existing measurement technology, the present invention provides a method and device for measuring the water content and flow waveguide phase of an oil well. Measurement accuracy of medium moisture content and success rate of flow measurement

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  • Waveguide phase measurement method and device for water content and flow of oil well
  • Waveguide phase measurement method and device for water content and flow of oil well
  • Waveguide phase measurement method and device for water content and flow of oil well

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Embodiment Construction

[0080] In the following, the present invention is further described through embodiments in conjunction with the accompanying drawings, but the scope of the present invention is not limited in any way.

[0081] The invention provides a method for synchronously measuring the water content and flow rate of crude oil in an oil well by using the same waveguide sensor, which can be fully applied to various types of oil wells and improves the measurement accuracy and the success rate of logging.

[0082] Waveguide, as a directional electromagnetic wave transmission mechanism, is a typical device of microwave transmission line. The transmission form of the guided electromagnetic wave is restricted by the boundary conditions of the conductor or medium. The boundary conditions and the boundary shape determine the electromagnetic field distribution law, the existence conditions and the propagation characteristics of the guided electromagnetic wave. Commonly used metal waveguides have two basi...

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Abstract

The invention discloses a waveguide phase measurement method and device for water content and flow of an oil well, and belongs to the technical field of production logging by integrally measuring thewater content and flow of crude oil through a waveguide method. A shell of a logging instrument serves as a waveguide sensor, a plurality of receivers are arranged in a waveguide in sequence in the electromagnetic wave propagation direction, phase characteristics of electromagnetic wave propagation on different waveguide lengths are respectively measured, water content signals measured by the receivers are utilized, and then the flow of a fluid medium is obtained through correlation function processing. According to the technical scheme, the measurement accuracy of the water content of the oil-water medium in the oil well and the success rate of flow measurement can be further improved.

Description

Technical field [0001] The invention belongs to the technical field of production logging, relates to the production profile logging technology of production logging, and specifically relates to a method and device for synchronously measuring the water content and flow rate of crude oil in an oil well by using the same waveguide sensor. Background technique [0002] Production logging refers to those downhole logging work performed after injection-production wells are put into production. Production profile logging is to measure the flow rate and water cut of different depth profiles in the oil well to obtain the properties and characteristics of the produced fluids in each layer. Quantity. [0003] At present, the measurement methods of water cut in oil wells at home and abroad mainly include density method, electrical parameter method and electromagnetic wave method. The density method is divided into radioactive density method and differential pressure density method. The densi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B49/08G01F1/58G01P5/22G01N23/00
CPCE21B47/00E21B49/08G01F1/58G01P5/22G01N23/00Y02A90/30
Inventor 刘翠玲王进旗刘金鹏周子彦周子健
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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