US 11,859,491 B2
Low power water cut sensing
Jürgen Kosel, Thuwal (SA); Altynay Kaidarova, Thuwal (SA); Abdullah Saud Almansouri, Thuwal (SA); Mohammed Asadullah Khan, Thuwal (SA); and Liam Swanepoel, Stellenbosch (ZA)
Assigned to KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY, Thuwal (SA)
Appl. No. 17/043,177
Filed by KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY, Thuwal (SA)
PCT Filed Apr. 4, 2019, PCT No. PCT/IB2019/052770
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/197949, PCT Pub. Date Oct. 17, 2019.
Claims priority of provisional application 62/654,681, filed on Apr. 9, 2018.
Prior Publication US 2021/0054739 A1, Feb. 25, 2021
Int. Cl. E21B 49/08 (2006.01); G01N 27/02 (2006.01); G01N 29/032 (2006.01); G01N 29/036 (2006.01); G01N 29/24 (2006.01); G01N 33/28 (2006.01)
CPC E21B 49/0875 (2020.05) [G01N 27/023 (2013.01); G01N 29/032 (2013.01); G01N 29/036 (2013.01); G01N 29/2412 (2013.01); G01N 33/2847 (2013.01); G01N 2291/0226 (2013.01); G01N 2291/0228 (2013.01); G01N 2291/02433 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for determining a water cut of a water/oil emulsion, the system comprising:
a water cut sensor comprising 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;
an alternating current source;
a processor configured to determine the water cut of the water/oil emulsion based on a resonant frequency of the magnetoelastic ribbon while the magnetoelastic ribbon is excited by electromagnetic field produced by the inductive coil, wherein the processor is further configured to determine 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; and
a feed line coupled to the water cut sensor, wherein the feed line includes an electrical coupling between the alternating current source and the inductive coil of the water cut sensor,
wherein the feed line includes an electrical coupling between the processor and the inductive coil of the water cut sensor or the processor is coupled to an acoustic sensor.