US 12,270,290 B2
Use of residual gravitational signal to perform anomaly detection
Paul F. Rodney, Spring, TX (US); and Reena Agarwal Chanpura, Sugar Land, TX (US)
Assigned to HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US)
Filed by HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US)
Filed on Oct. 16, 2020, as Appl. No. 17/072,761.
Prior Publication US 2022/0120169 A1, Apr. 21, 2022
Int. Cl. E21B 44/02 (2006.01); E21B 7/04 (2006.01); E21B 47/024 (2006.01); E21B 47/08 (2012.01); E21B 49/00 (2006.01)
CPC E21B 44/02 (2013.01) [E21B 7/04 (2013.01); E21B 47/024 (2013.01); E21B 47/08 (2013.01); E21B 49/003 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A computer-implemented method comprising:
receiving one or more magnetic field signals;
processing the received one or more magnetic field signals to produce one or more clean magnetic field signals corresponding with non-noise components of orientation of a drilling tool;
receiving at least one gravitational field signal corresponding with the drilling tool;
generating a modeled gravitational field signal based on application of a regression model to the one or more clean magnetic field signals and the at least one gravitation field signal;
generating a residual signal based on the difference between the at least one gravitational field signal and the modeled gravitational field signal;
analyzing the residual signal to identify one or more tool vibration patterns in one or more harmonic patterns in the residual signal;
identifying one or more drilling anomalies based on the one or more tool vibration patterns; and
controlling operation of the drilling tool during the drilling operation by automatically adjusting one or more drilling operation parameters based on the one or more drilling anomalies.