Patent ID: 11859491
Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 8:
9. A method for determining a water cut of a water/oil emulsion, the method comprising:
arranging a water cut sensor in the water/oil emulsion, wherein the water cut sensor comprises a magnetoelastic ribbon and an inductive coil arranged proximate to the magnetoelastic ribbon so that an electromagnetic field produced by the inductive coil electromagnetically excites the magnetoelastic ribbon;
electromagnetically exciting the magnetoelastic ribbon by the electromagnetic field produced by the inductive coil;
determining the water cut of the water/oil emulsion based on a resonant frequency of the magnetoelastic ribbon while the magnetoelastic ribbon is electromagnetically excited; and
determining that the water cut sensor is surrounded by an air/gas mixture when the resonant frequency is lower than a resonant frequency corresponding to a 90% water cut.