Patents by Inventor Ashley Bernard Johnson

Ashley Bernard Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10781640
    Abstract: A downhole cutting tool which may be a reamer or a mill has a rotary tool body with at least one block which carries hard-faced cutters and projects or is extensible from the tool body. A radially outward facing part of the cutter block defines a channel for fluid flow which extends generally axially along the cutter block. The channel is configured such that at least the rotationally trailing edge of the channel extends along the block in one or more directions which are inclined relative to the tool axis. This reduces or avoids the amount of channel edge parallel to the tool axis and thereby mitigates whirling and/or or vibration.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: September 22, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ashley Bernard Johnson, Jonathan Robert Hird
  • Patent number: 10767427
    Abstract: A method is provided for controlling a managed pressure drilling system. The method comprises providing a fast system interpretation model for the operation of the managed pressure drilling system, obtaining real-time measurements from one or more sensors regarding the operation of the managed pressure drilling system, using the measurements to calibrate the fast system interpretation model for the managed pressure drilling system in real-time and using a predictive controller to run the calibrated fast system interpretation model to a time horizon in the future.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: September 8, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ashley Bernard Johnson, Maurice Ringer, Devi Putra, Michalis Frangos, Jakub Jerabek, Kjetil Havre, Walter David Aldred
  • Patent number: 10760364
    Abstract: Tubing in a borehole is removed using a rotary milling tool comprising a plurality of elements projecting from or extensible from the body of the tool. The elements are distributed azimuthally around the tool body. The elements comprise cutters to remove material from the tubing and outward facing guide surfaces for sliding contact with an inner surface of the tubing. As the tool is rotated and advanced, forward cutters contact the inner surface removing material from the tubing and exposing a renewed interior tubing surface with a diameter swept out by the cutter. The outward facing guide surfaces extend the same distance from the tool body as the forward cutters producing a sliding contact with the newly created inward facing surface. Further cutters, disposed behind the outward facing guide surfaces, with respect to motion of the tool through the tubing, remove the remaining portion of the tubing.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: September 1, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ashley Bernard Johnson, Jonathan Robert Hird
  • Patent number: 10704332
    Abstract: A rotary cutting tool, which may be a reamer for enlarging an underground borehole or a mill to remove tubing by cutting into the inside wall of the tubing, has a plurality of cutter assemblies distributed azimuthally around a longitudinal axis of the tool, wherein each cutter assembly includes a supporting structure bearing a sequence of cutters which extends axially along the tool with leading surfaces facing in a direction of rotation of the tool. The cutters of each sequence are positioned at a plurality of circumferential positions such that no more than three cutters of the sequence are aligned on any line parallel to the longitudinal axis of the tool. In an overlapping arrangement, a plurality of cutters in the sequence may have a leading face circumferentially behind the leading face but ahead of the trailing end of at least one other cutter.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: July 7, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson, Göktürk Tunç
  • Patent number: 10612309
    Abstract: A reaming tool for enlarging an underground borehole comprises a plurality of cutter assemblies distributed azimuthally around a longitudinal axis of the tool, wherein each cutter assembly includes a supporting structure bearing a sequence of cutters which have hard surfaces exposed and facing in a direction of rotation of the tool. The outer surface of the support structure on each cutter assembly includes zones which each face towards an end of the assembly and is configured such that as it extends circumferentially relative to the tool axis in the direction opposite to rotation of the tool, it also extends away from an end of the assembly.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: April 7, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson, Gokturk Tunc
  • Patent number: 10584538
    Abstract: A reamer for enlarging an underground borehole comprises a plurality of cutter assemblies distributed azimuthally around a longitudinal axis of the tool, and each cutter assembly comprises a supporting structure and a plurality of hard faced cutters (211-216) embedded therein with a hard face of each cutter exposed and facing in a direction of rotation of the tool. Each cutter assembly includes at least one outward-facing gauge surface (220), at a radial distance from the tool axis which aligns the gauge surface with the radially outer extremity (218) of at least one cutter. This gauge surface (220) extends (221) in the direction of rotation circumferentially ahead of the extremity of the exposed face of the aligned at least one cutter. It may meet the side of the assembly at a curved (222) or bevelled (342) edge and may also extend back from the exposed face of the cutter.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 10, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson, Gokturk Tunc
  • Patent number: 10563472
    Abstract: A downhole rotary tool for comminuting tubing in a borehole comprises a tool body and a plurality of cutting assemblies projecting from or extensible from the tool body and distributed azimuthally around a longitudinal axis of the tool body. Each cutting assembly comprises a supporting structure and a plurality of cutters with cutting surfaces of hard material. The rotating tool is advanced into initial contact with the tubing to commence milling axially along the tubing and then advanced further to continue milling the tubing, At least one cutting assembly has material which is softer than the hard faces of the cutters and is positioned to contact the tubing at the initial contact and delay contact between at least one hard surfaced cutter and the tubing.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: February 18, 2020
    Assignee: Wellbore Integrity Solutions LLC
    Inventor: Ashley Bernard Johnson
  • Patent number: 10550684
    Abstract: The operation of rotary equipment carried on elongate structure such as coiled tubing extending into a borehole from the Earth's surface is carried out by providing at least one optical fibre extending downhole to the rotary equipment from the surface, using optical time domain reflectometry to operating the optical fibre as a distributed vibration sensor while the rotary equipment is in operation, and thereby observing vibration created by the rotary equipment.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: February 4, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Caroline Humphrey, Ashley Bernard Johnson, Paul Frederick Cilgrim Dickenson, Gokturk Tunc, Michael Paul Barrett
  • Patent number: 10533386
    Abstract: A method is provided for determining a discharge coefficient of a managed pressure drilling choke/valve as a function of valve opening position. The method comprises: a flow of air/gas through the choke/valve; measuring a velocity of the air/gas flow at an inlet of the choke/valve; and measuring a pressure drop of the air/gas flow across the choke/valve.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: January 14, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Gary Oddie, Ashley Bernard Johnson
  • Publication number: 20200003010
    Abstract: A drilling system that includes a drill bit that drills a bore through rock. A shaft coupled to the drill bit, wherein the shaft transfers rotational power to the drill bit. A housing that receives at least part of the shaft. A rotary steering system that controls a drilling direction of the drill bit. The rotary steering system includes a steering sleeve that couples to and uncouples from the housing to control a drilling direction of the drill bit.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 2, 2020
    Inventors: Simon H. Bittleston, Ashley Bernard Johnson, Mauro Caresta, Riadh Boualleg, Joachim Sihler, Huseyin Murat Panayirci
  • Publication number: 20200003009
    Abstract: A directional drilling system that includes a drill bit that drills a bore through rock. The drill bit includes an outer portion of a first material and an inner portion coupled to the outer portion. The inner portion includes a second material.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 2, 2020
    Inventors: Mauro Caresta, Fabio Cappi, Hans Seehuus, Kjell Haugvaldstad, Riadh Boualleg, Joachim Sihler, Ashley Bernard Johnson
  • Patent number: 10519722
    Abstract: A reamer for enlarging an underground borehole comprises a plurality of cutter assemblies distributed azimuthally around a longitudinal axis of the tool. Each cutter assembly comprises a supporting structure and a plurality of hard faced cutters secured therein with a hard surface of each cutter exposed and facing in a direction of rotation of the tool and extending radially outwards from the tool axis to a radially outward extremity. These cutters are arranged in a sequence extending axially along the tool. In contrast with convention a1 cutter assemblies, the supporting structure comprises at least one radially outward-facing surface which is positioned to follow behind the leading face of at least one cutter as the tool rotates and which is aligned with the radially outer extremity of the cutter at the same radial distance from the tool axis. Thus the surface area available to contact the borehole wall and stabilize the positioning and motion of the rotating reamer is enhanced.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: December 31, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson, Gokturk Tunc
  • Patent number: 10508499
    Abstract: A reaming tool for enlarging an underground borehole comprises a plurality of cutter assemblies (251, 252, 253) distributed azimuthally around a longitudinal axis of the tool, wherein each cutter assembly comprises support structure bearing a sequence of cutters (211-214) with leading surfaces facing in a direction of rotation of the tool and the sequence of cutters extends axially along the tool from an axial end (202) of the tool with the cutters positioned at radial distances from the tool axis which progressively increase as the sequence extends away from the axial end of the tool. The cutter assemblies include guiding structure (261-264) which is positioned circumferentially ahead of the leading faces of cutters of the sequence on the assembly.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 17, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson, Gokturk Tunc
  • Patent number: 10501995
    Abstract: A reaming tool for enlarging an underground borehole has a plurality of cutter assemblies distributed azimuthally around a longitudinal axis of the tool. First, second and possibly more cutter assemblies each have an axially extending length comprising supporting structure bearing a sequence of cutters which have hard surfaces facing in a direction of rotation of the tool and are distributed axially along the length. A plurality of the cutters on the second cutter assembly are at axial positions relative to the tool which are intermediate between axial positions of the cutters on the first cutter assembly. Cutters on further assemblies may also be at intermediate axial positions. Cutters in the overall plurality of sequences are positioned at radial distances from the tool axis which increase as axial distance from an end of the tool increases.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 10, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson, Gokturk Tunc
  • Patent number: 10487599
    Abstract: A bell nipple for use in an offshore wellbore operation comprising an upper tubular member and a lower tubular member connected telescopically via a slip joint, one or more pistons at the level of the radial plane which is defined by the lowest point of the side outlet and each substantially not axially movable relative to the lower tubular member, wherein the total cross sectional area of the one or more pistons is substantially the same as the cross sectional area of the slip joint less the cross sectional area of the drillpipe. The one or more pistons in the bell nipple provides passive heave compensation in the system, so that the flow rate of drilling fluid measured along the flowline is free from perturbation due to heave during offshore operations.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: November 26, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Ashley Bernard Johnson
  • Patent number: 10458224
    Abstract: Monitoring one or more items of equipment associated with a borehole or other conduit. A sensor system includes a vibration sensor for sensing vibrations at one or more sensor locations associated with one or more items of the equipment and/or the borehole or other conduit. A processing system processes the sensor information to determine a characteristic of the operation of the one or more items of equipment and/or the borehole or other conduit.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: October 29, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Paul Frederick Cilgrim Dickenson, Gareth P. Lees, Arthur H. Hartog, Cheng-Gang Xie, Paul Simon Hammond, Ashley Bernard Johnson, Gary Martin Oddie, Andrew William Meredith, Franck Bruno Jean Monmont, Theo Cuny
  • Patent number: 10415318
    Abstract: An expandable reamer for a borehole has a plurality of support elements (202) distributed around a central axis of the tool with cutters (234, 236) and stabilising pads (250) on the support elements, arranged such that at least one of the support elements comprises at least one region comprising cutters and at least one support element comprises a stabilising pad having a front surface positioned to face the wall of the borehole. The reamer includes drive mechanism for expanding the support elements (202) radially outwardly from the central axis. The support elements differ in the presence or axial positions of stabilising pads (250) thereon such that at least one support element differs from at least one other support element in the presence or axial position of at least one stabilising pad. This arrangement allows the stabilising pads to be positioned at or close to full gauge, thereby reducing vibration.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: September 17, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ashley Bernard Johnson, Jonathan Robert Hird
  • Patent number: 10273793
    Abstract: Managing operation of a sealing element is described. In some aspects, failure of the sealing element of a pressure drilling system may be predicted. Deformation of the sealing element as a tool joint is pulled through the sealing element may be detected and tracked to determine if a deformation pattern of sealing element changes. Responses of sealing element due to one or more of stress, strain, temperature, mechanical load, and pressure using a network of sensors around sealing element can be detected. Responses may be tracked over time. Detected responses are compared to tracked responses to identify changes in the symmetry of responses over time or changes in magnitude of responses over time. Changes are associated with fractures occurring within sealing element. A remaining life of sealing element is predicted based on the changes and replacement may be scheduled based at least in part on the predicted remaining life.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: April 30, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ashley Bernard Johnson, Paul Anthony Francis
  • Patent number: 10233698
    Abstract: Wear sensors are provided on a drill bit or other rotary cutting tool which is for operation in a subterranean borehole and has a plurality of separate cutters protruding from a support structure towards the material to be cut by the tool. The electrically operated sensing means are located at or coupled to a sensing point within a protrusion from the support structure. This sensing point is located within a protrusion such that attrition of at least one cutter to a partially worn state brings the protrusion into abrasive contact with the material being cut and attrition of the protrusion then exposes the sensing point to the material which is being cut by the tool and thereby brings about a detectable change, which may include damage to the sensor at the sensing point, indicative of wear. The tool includes means to communicate data from the sensing means to the surface.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: March 19, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Caroline Humphrey, John Cook, Ashley Bernard Johnson, Gokturk Tunc
  • Publication number: 20190071930
    Abstract: A rotary cutting tool having a tool body insertable into a drill string with a plurality of projecting or extendable cutter assemblies at positions distributed azimuthally around the longitudinal axis of the tool body. Each cutter assembly includes a support structure bearing a plurality of cutters with exposed hard cutting surfaces facing in a direction of rotation of the tool. The support structure may have a surface positioned to contact a conduit wall and may be made as a body of particulate material infiltrated with a metal binder, where the particulate material may include material such as tungsten carbide having a Knoop hardness of at least 1000. The support structure may have a functionally graded composition with hard material to contact the wall and steel in a region which will be machined during manufacture.
    Type: Application
    Filed: January 23, 2017
    Publication date: March 7, 2019
    Inventors: Jonathan Robert Hird, Ashley Bernard Johnson