US 12,168,926 B2
Systems and methods for determining high-speed rotating toolface within a well
William A. Hered, Houston, TX (US)
Assigned to Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Sep. 2, 2022, as Appl. No. 17/901,925.
Prior Publication US 2024/0084694 A1, Mar. 14, 2024
Int. Cl. E21B 47/024 (2006.01); E21B 47/002 (2012.01)
CPC E21B 47/024 (2013.01) [E21B 47/0025 (2020.05)] 13 Claims
OG exemplary drawing
 
1. A method comprising:
providing a measurement tool having a measurement sensor to measure a desired well parameter in a direction of a toolface of the measurement tool and a plurality of rotational sensors adapted to measure corresponding parameters that are dependent upon a rotational orientation of the measurement tool, the plurality of rotational sensors including a magnetometer that measures a casing magnetization of a cased wellbore;
positioning the measurement tool in the cased wellbore;
rotating the measurement tool in the cased wellbore;
measuring the casing magnetization of the cased wellbore with the magnetometer;
providing the measured casing magnetization output by the magnetometer to a phase locked loop circuit that generates a sine wave which is synchronized with the casing magnetization output by the magnetometer;
for each of a series of time steps while the measurement tool is rotating in the wellbore, measuring the desired well parameter with the measurement sensor;
measuring the parameters corresponding to the plurality of rotational sensors;
periodically synchronizing measurements of the parameters corresponding to the plurality of rotational sensors to the sine wave generated by the phase locked loop circuit;
providing the measurements of the parameters corresponding to the plurality of rotational sensors to a Kalman filter, the Kalman filter generating a prediction of a current toolface based on a preceding toolface and the measurements of the parameters corresponding to the plurality of rotational sensors; and
generating data that maps the desired well parameter, the data including for each of the series of time steps, the corresponding measurement of the desired well parameter and the corresponding predicted toolface.