Loading patent…
AssigneeMulti Phase Meters AS
InventorsArnstein Wee, Kenneth Gundersen
Estimating the term…
A method for determining the flow rates of a fluid comprising a multi-component mixture comprising the following steps: a. The temperature and pressure of the multi-component mixture is determined b. the fractions of the multi-component mixture is determined based on at least two measured physical properties of the multi-components mixture and knowledge of the same physical property of the individual components of the multi-component mixture c. the velocity of the multi component mixture is determined d. based on the result from step a-c, the flow rate of the individual component of the fluid is determined characterized by a method for improving the accuracy of the determined flow rates where e. an electromagnetic measurement is performed f. a statistical parameter related to the electromagnetic measurement is calculated g. the said statistical parameter is compared to an empirical derived threshold value corresponding to the value of the statistical parameter when only one of the component of the multi component mixture is present h. the thickness of unwanted deposits on the pipe wall is determined i. the result from step a-d and step h is used to obtain an improved flow rate determination of the individual components of the said fluid An apparatus for performing the method is also disclosed.
A method for determining the flow rates of a fluid comprising a multi-component mixture comprising the following steps:
A method according to anyone of the proceeding claims wherein the velocity is measured based measurement of pressure drop across a restriction in the pipe.
A method according to claim 10 wherein a venturi is used to provide pressure drop.
A method according to anyone of the proceeding claims, wherein the electromagnetic measurement is based on measurement of the phase or loss of an electromagnetic wave transmitted through the media within the pipe.
A method according to anyone of the proceeding claims, wherein the electromagnetic measurement is based on measurement of the phase or loss of a reflected electromagnetic wave within the pipe.
A method according to anyone of the proceeding claims, wherein the electromagnetic measurement is based on measurement of a resonance frequency within the pipe.
A method according to anyone of the proceeding claims, wherein the electromagnetic measurement is based on measurement of energy loss and/or phase shift of an electromagnetic wave being reflected from the media within the pipe.
A method according to anyone of the proceeding claims wherein the standard deviation is used as the statistical parameter.
A method according to anyone of the proceeding claims wherein the thickness of unwanted deposits on the pipe wall is measured based on measurement of phase or loss of an electromagnetic wave transmitted through the media within the pipe.
A method according to anyone of the proceeding claims wherein the thickness of unwanted deposits on the pipe wall is measured based on measurement of the phase or loss of a reflected electromagnetic wave within the pipe.
A method according to anyone of the proceeding claims wherein the thickness of unwanted deposits on the pipe wall is measured based on measurement of capacitance.
A method according to anyone of the proceeding claims wherein the thickness of unwanted deposits on the pipe wall is measured based on measurement of resistance.
A method according to anyone of the proceeding claims wherein the thickness of unwanted deposits on the pipe wall is measured based on measurement of speed of sound.
An apparatus for determining the flow rates of a fluid comprising a multi-component mixture, the apparatus comprising a tubular section and the following elements:
Dependencies are inferred from the claim text.