Patent ID: 11920459
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 19:
20. The system of claim 19, wherein the controller is configured to compute the rate of penetration via: (iia) processing the measured radial displacements to determine maximum radial displacements for each of the first and second pads during each revolution while rotating; (iib) filtering the maximum radial displacements over a predetermined number of revolutions to reduce noise; (iic) searching for maxima and minima in the filtered maximum radial displacements; (iid) correlating the maxima and minima for the first and second pads to obtain a corresponding time delay (Δt); and (iie) computing the rate of penetration (ROP) by processing the time delay and an axial distance (D) between the first and second pads, where ROP=D/Δt.