Detection of an element in a flow
OwnerBruno Pinguet, Gilles Rouxinventors
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Abstract
A method of detecting an additional element from a plurality of other elements forming a multiphase flow. The method comprising: measuring an energy spectrum response based on electromagnetic irradiation of the multiphase flow. Determining a fraction concentration of the other elements forming the multiphase flow based on a lower energy peak in the spectrum response and detecting an additional element in the multiphase flow based on measuring a variation of a higher energy peak in the spectrum response. It is also possible to measure the quantity of the additional element and to compensate the fractional concentrations of the respective n-phase measurements.
Claims27
A method of detecting an additional element from a plurality of other elements forming a multiphase flow, the method comprising the steps of;
- measuring an energy spectrum response based on electromagnetic irradiation of the multiphase flow;
- determining a fraction concentration of the other elements forming the multiphase flow based on a lower energy peak in the spectrum response;
- and
- detecting an additional element in the multiphase flow based on measuring a variation of a higher energy peak in the spectrum response.
The method of any preceding claim, wherein the electromagnetic irradiation is performed by injecting gamma rays into the multiphase flow.
A tool for detecting an additional element from a plurality of other elements forming a multiphase flow, the tool comprising:
- radiation circuitry for electromagnetic irradiation of the multiphase flow and based thereon, capable of determining an energy spectrum response of the multiphase flow;
- first processing circuitry for determining a fraction concentration of the other elements forming the multiphase flow based on a distinct low energy peak in the spectrum response;
- and
- second processing circuitry for detecting an additional element in the multiphase flow based on measuring a variation of a less distinct high energy peak in the spectrum response.
A method of detecting an n+1 phase in an n-phase(s) flow through a pipe, the method comprising:
- measuring an energy spectrum response by injecting electromagnetic rays of a plurality of energy levels into the n-phase flow;
- determining a respective fractional concentration for each of the n-phase(s) flow based on measurements at one end of the spectrum response;
- detecting the n+1 phase in the flow based on measurements art an opposite end of the spectrum response;
- determining the fractional concentration of the n+1 phase;
- and
- correcting the respective fractional concentration for each of the n phase(s) flow through the pipe.
Dependencies are inferred from the claim text.