Scale monitoring and inhibitor quantification technique in multiphase meters

An inhibitor, chemical technology, applied in the field of scaling monitoring and inhibitor quantification technology in multiphase metering, can solve the problem of not providing

Active Publication Date: 2016-06-08
ROXAR FLOW MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, all the prior art described do not provide a method related to the application of deposit detection

Method used

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  • Scale monitoring and inhibitor quantification technique in multiphase meters
  • Scale monitoring and inhibitor quantification technique in multiphase meters
  • Scale monitoring and inhibitor quantification technique in multiphase meters

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Embodiment Construction

[0021] Maxwell (1904), Bruggeman (1935), Wagner (1973), Sillars (1937) (see below for full reference) and many others have developed a method for estimating the effective complex permittivity of a homogeneous mixture of two different phases formula. The effective complex permittivity is the permittivity of a virtual material that exhibits the same electromagnetic behavior when substituted for a mixture of two or more materials.

[0022] For simplicity, the case where one of the components (brine) has a high conductivity compared to the other (oil and / or gas) will be discussed here, and the purpose is to estimate the oil continuous flow regime and the water continuous flow Normal flow effective complex permittivity in the state. The normal complex permittivity is defined in this document as the expected value of the real and imaginary parts of the effective complex permittivity of a three-phase flow measured by an impedance sensor or a microwave sensor in the absence of deposi...

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Abstract

The present invention relates to a system for detecting deposits or chemical inhibitor close to or on the surface of electrodes or pins facing a fluid flow where any combination of the components oil, water, gas and a chemical inhibitor fluid could be present, and where the electrodes or pins are coupled to measuring means for monitoring the electrical characteristics of the flow, the electrical characteristics including the complex impedance or complex permittivity. The system comprises detecting means transmitting a signal indicating presence of deposit or chemical inhibitor if the real part of the complex impedance, in case of hydrocarbon continuous flow, or the imaginary part of the complex impedance, in case of water continuous flow deviates from predetermined limits related to the electrical characteristics of the said flow.

Description

technical field [0001] The present invention relates to systems and methods for early detection of deposits forming on pipe walls in process streams. Background technique [0002] In performing measurements on multiphase flows such as water, oil and / or gas flows, it is a known problem that deposits can form on the measuring device which has been in contact with the flow and thus affect the quality of the measurement. This deposit can be removed in various ways or flushed away by fluid. The need for cleaning and the intervals between cleaning can vary depending on the environment and the composition of the stream. The present invention will detect the onset of deposits before they affect the flow measurement sensor and provide a means for early treatment of deposits. In the following, for deposits, we also consider chemicals that are injected into the fluid to remove deposits that may stick to the tubes, sensor walls and electrodes. Such chemical injections, also known as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22G01F1/712G01F1/74G01N33/18
CPCG01F1/74G01N27/026G01F1/56G01F1/64G01N17/008G01F25/10G01F1/712G01N33/1833
Inventor 迪米特里奥斯·奥伊科诺莫
Owner ROXAR FLOW MEASUREMENT
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