公开(公告)号：US12091958B2

公开(公告)日：2024-09-17

申请号：US17151286

申请日：2021-01-18

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes

IPC: E21B44/02 ,  E21B3/02 ,  E21B44/00 ,  G05B19/401

CPC classification number: E21B44/02 ,  E21B3/022 ,  E21B44/00 ,  G05B19/401 ,  G05B2219/45129

Abstract: An apparatus and method for controlling a drilling system in a manner that reduces stick-slip by receiving a desired rotation speed v0 of the drive system to rotate the drillstring, receiving property measurements of the drilling system, and deriving therefrom a rotation speed vup of upgoing rotational waves of the drillstring associated with upgoing rotational energy in the drillstring. An actual rotation speed v of the drive system to rotate the drillstring is determined by representing energy in the drillstring as a mathematical expression containing a sum of rotational energy produced by the drive system and downgoing rotational energy caused by the upgoing rotational waves that are reflected downwardly at an upper end of the drillstring, and then optimizing the mathematical expression, which is then used for controlling the drive system to rotate the drillstring at v.

公开(公告)号：US11261724B2

公开(公告)日：2022-03-01

申请号：US14899873

申请日：2015-12-17

Applicant: Schlumberger Technology Corporation

Inventor： Shunfeng Zheng ,  Benjamin Peter Jeffryes ,  Jacques Orban ,  Gokturk Tunc

IPC: E21B47/04 ,  E21B44/00 ,  E21B44/02 ,  E21B19/00 ,  E21B19/10 ,  E21B47/00 ,  E21B47/09 ,  E21B7/04 ,  E21B44/04 ,  E21B7/06 ,  E21B47/022 ,  E21B47/007 ,  G01B11/22

Abstract: Systems and methods for drilling a wellbore. The method includes measuring a first distance that a drilling device is raised while connected to a drill string, determining a weight-on-bit in the drill string, determining a second distance to lower the drilling device such that a drill bit at a lower extremity of the drill string approaches toward a bottom of the wellbore, based on the first distance and the weight-on-bit, and lowering the drilling device by the second distance.

公开(公告)号：US11066918B2

公开(公告)日：2021-07-20

申请号：US16096829

申请日：2017-04-19

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes

IPC: E21B47/00 ,  E21B4/02 ,  G01P3/02 ,  G01P3/44 ,  E21B21/08

Abstract: A method for determining a rotational frequency of a positive displacement motor positioned in a downhole portion of a drill string, the method including: providing at least one measurement device for measuring a property of a part of the drill string; providing a processor for processing a signal output by the at least one measurement device; operating the positive displacement motor whilst the part of the drill string is in a non-driven state; receiving the signal at the processor; determining, using the processor, a frequency spectrum of the signal; and determining the rotational frequency of the positive displacement motor by: identifying a peak in the frequency spectrum in a pre-determined frequency range associated with an expected rotational frequency of the positive displacement motor; and/or identifying a peak in the frequency spectrum having a pre-determined peak width associated with an expected rotational frequency of the positive displacement motor.

公开(公告)号：US10689967B2

公开(公告)日：2020-06-23

申请号：US15588288

申请日：2017-05-05

Applicant: Schlumberger Technology Corporation

Inventor： Benjamin Peter Jeffryes ,  Nathaniel Wicks

IPC: E21B44/04 ,  E21B3/02

Abstract: A method and autodriller for drilling a wellbore with a drill rig by rotating a drillstring and a drill bit with a drill rig drive system; applying an initial weight of the drillstring on the drill rig WOB; measuring drill rig properties to derive an anticipated drill bit rotation speed; and changing the weight of the drillstring on the drill rig WOB so that a corresponding change to the downhole weight on the drill bit occurs approximately simultaneously with a change in the anticipated drill bit rotation speed.

公开(公告)号：US20250003326A1

公开(公告)日：2025-01-02

申请号：US18884208

申请日：2024-09-13

Applicant: Schlumberger Technology Corporation

Inventor： Benjamin Peter Jeffryes

IPC: E21B44/02 ,  E21B3/02 ,  E21B44/00 ,  G05B19/401

Abstract: A non-transitory computer readable medium having a computer program stored thereon causes a computer to perform a method for controlling a drilling system in a manner that reduces stick-slip including: receiving a desired rotation speed v0 of the drive system to rotate the drillstring, receiving property measurements of the drilling system, and deriving therefrom a rotation speed vup of upgoing rotational waves of the drillstring associated with upgoing rotational energy in the drillstring. An actual rotation speed v of the drive system to rotate the drillstring is determined by representing energy in the drillstring as a mathematical expression containing a sum of rotational energy produced by the drive system and downgoing rotational energy caused by the upgoing rotational waves that are reflected at an upper end of the drillstring, and then optimizing the mathematical expression, which is then used for controlling the drive system to rotate the drillstring at v.

公开(公告)号：US10927658B2

公开(公告)日：2021-02-23

申请号：US14778626

申请日：2014-03-19

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes

IPC: E21B44/02 ,  E21B44/00 ,  E21B3/02 ,  G05B19/401

Abstract: An apparatus and method for controlling a drilling system in a manner that reduces stick-slip by receiving a desired rotation speed v0 of the drive system to rotate the drillstring, receiving property measurements of the drilling system, and deriving therefrom a rotation speed vup of upgoing rotational waves of the drillstring associated with upgoing rotational energy in the drillstring. An actual rotation speed v of the drive system to rotate the drillstring is determined by representing downgoing energy in the drillstring as a mathematical expression containing a sum of downgoing rotational energy produced by the drive system and downgoing rotational energy caused by the upgoing rotational waves that are reflected downwardly at an upper end of the drillstring, and then optimizing the mathematical expression, which is then used for controlling the drive system to rotate the drillstring at v.

公开(公告)号：US10895142B2

公开(公告)日：2021-01-19

申请号：US16809366

申请日：2020-03-04

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes ,  Nathaniel Wicks ,  Shunfeng Zheng

IPC: E21B3/035 ,  E21B44/00 ,  E21B3/02

Abstract: Methods and apparatus for controlling drill string rotation. The apparatus may be a control system for controlling a driver operable to rotate a drill string to form a wellbore extending into a subterranean formation. The control system may include a first controller operable to control rotation of the driver and a second controller communicatively connected with the first controller. During the drilling operations the first and/or second controller may be operable to generate a rotational speed command based on status information indicative of operational status of the drill string, and thereby cause the driver to rotate the drill string based on the rotational speed command.

公开(公告)号：US10409300B2

公开(公告)日：2019-09-10

申请号：US14899569

申请日：2014-06-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes ,  John Cook ,  Steven Gahlings

IPC: E21B44/00 ,  G05D19/02 ,  E21B47/00 ,  E21B43/12 ,  G05B15/02

Abstract: A method for changing a set point of a system where period of a dominant resonance of the system is determined, a change profile for the set point change is processed; a time period for the set point change based on the period of the dominant resonance in order to minimize excitation of the dominant resonance is also processed; and the set point change is actioned according to the processed change profile and the time period.

公开(公告)号：US10392921B2

公开(公告)日：2019-08-27

申请号：US15552740

申请日：2016-02-22

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Benjamin Peter Jeffryes

IPC: E21B47/022 ,  E21B47/024

Abstract: A downhole tool is provided for measuring accelerations at a location within a subterranean borehole. The tool is rotatable around the longitudinal direction of the borehole. The tool includes four accelerometers, each accelerometer measuring acceleration in a respective direction and being arranged such that at least a component of its measured acceleration is normal to the longitudinal direction. The accelerometers are further arranged such that no more than any two of the four accelerometers have their respective components parallel to the same direction. The tool also includes a first device which measures the rotational speed of the tool. The tool also includes a processor unit which relates the acceleration measured by each accelerometer to the true acceleration at that accelerometer by a respective scaling term and a respective offset, and combines the measured accelerations and the tool rotational speed to re-calibrate the scaling terms as the tool rotates.

公开(公告)号：US20190018871A1

公开(公告)日：2019-01-17

申请号：US15651776

申请日：2017-07-17

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Shunfeng Zheng ,  Benjamin Peter Jeffryes

IPC: G06F17/30

Abstract: A method includes creating a digital description of the well construction system, wherein the digital description of the well construction system describes the locational relationship of components in the well construction system, collecting multiple types of data from a well construction system, and tagging the collected data with an identification indicating at least one of a location of a source of collected data and a component in the well construction system from which the data is collected. The multiple types of data include sensor data collected from one or more sensors disposed along the well construction system and operational state data indicating an on/off status of one or more components in the well construction system.