公开(公告)号：US10591625B2

公开(公告)日：2020-03-17

申请号：US15592562

申请日：2017-05-11

Applicant: PASON SYSTEMS CORP.

Inventor： Trevor Leigh Holt ,  Thomas William Charles Wilson ,  Quinn Harrison Hepburn

IPC: G01V3/00 ,  G05B19/406 ,  E21B12/02 ,  E21B41/00 ,  E21B21/08 ,  E21B7/00 ,  E21B44/06 ,  E21B44/04 ,  E21B44/02

Abstract: Methods, systems, and techniques for controlling the rate of penetration of a drill bit use drilling parameter measurements read from drilling parameter sensors to evaluate control loops, with the output of one of the control loops at any given time being used by an automatic driller to control the rate of penetration. For each of the drilling parameters, the automatic driller reads a drilling parameter measurement, determines an error measurement that represents a difference between a drilling parameter setpoint and the drilling parameter measurement, and from the error measurement determines an output signal proportional to the rate of penetration of the drill bit. The output signal of one of the control loops is subsequently selected and used to control the rate of penetration.

公开(公告)号：US11454103B2

公开(公告)日：2022-09-27

申请号：US16156143

申请日：2018-10-10

Applicant: Pason Systems Corp.

Inventor： Quinn Harrison Hepburn ,  Trevor Leigh Holt

IPC: E21B44/00 ,  E21B19/00 ,  E21B19/04

Abstract: Methods, systems, and techniques for controlling the rate of penetration of a drill bit are described. In particular, an operate control loop is evaluated by: determining a travelling block acceleration of a travelling block; determining an acceleration error measurement between the travelling block acceleration and a target travelling block acceleration; determining, based on the acceleration error measurement, a brake control signal; and using the brake control signal to control a braking mechanism configured to apply a variable braking force to the travelling block.