Patent ID: 11965417
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 14:
15. A method comprising:
receiving a magnetic measurement from a magnetic sensor that is within a sensor assembly integrated into a casing positioned in a wellbore formed in a subsurface formation, wherein the magnetic measurement is a result from a force between a magnet in the sensor assembly and magnetic particles flowing with cement slurry inside the casing from a reverse cementing, wherein the sensor assembly includes a sensor plug having a side with a non-flat shape that is to be in contact with the cement slurry flowing in the casing of the wellbore;
determining whether the magnetic measurement exceeds a magnetic threshold; and
determining that the cement slurry is flowing back up the wellbore internal to the casing at or beyond a location in the wellbore, in response to a determination that the magnetic measurement exceeds the magnetic threshold.