Of Fluid Pressure Below Ground Patents (Class 175/25)
  • Patent number: 10947787
    Abstract: An underreamer for increasing a diameter of a wellbore. The underreamer may include a body having an axial bore extending at least partially therethrough. An electromagnetic activation system may be disposed at least partially within the bore of the body. A valve may be disposed within the bore of the body and coupled to the electromagnetic activation system. The valve may include a mobile element and a static element. The mobile element may be coupled to the electromagnetic activation system and move from a first position where the mobile element obstructs fluid flow through the valve to a second position where the mobile element permits fluid flow through the valve. A cutter block may be movably coupled to the body and move radially-outward as the mobile element moves from the first position to the second position.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: March 16, 2021
    Inventors: Nathan E. Fuller, Jonathan D. Marshall, Jordan D. Englund, Jacques Orban, R. Craig Boswell
  • Patent number: 10890041
    Abstract: Systems and methods for managed pressure cementing and/or completions operations in subterranean well bores are provided. In some embodiments, the methods comprise: placing a tubular string into a well bore, wherein an outer surface of the tubular string and an inner wall of the well bore define an annulus in a closed pressure loop and in communication with a choke valve; pumping a fluid into the annulus; and while pumping the fluid, determining a setpoint for the choke valve corresponding to a setpoint for a bottomhole pressure in the annulus, determine an actual bottomhole pressure in the annulus using data from a downhole sensor in the annulus, determining if the actual bottomhole pressure is greater than, less than, or equal to the setpoint, and if the actual bottomhole pressure is greater or less than the setpoint, manipulating the choke valve using a controller to decrease or increase the bottomhole pressure.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: January 12, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Kris Ravi, James Randolph Lovorn, Krishna Babu Yerubandi
  • Patent number: 10878145
    Abstract: A method for generating a BHA design and component selection by creating a plurality of BHA configurations. A cost function, representative of each respective BHA configuration, is determined. Each cost function includes drilling process metrics. A final BHA configuration of the plurality of BHA configurations is selected having an optimal cost function value. The optimal cost function value may be defined as a cost function value that is less than cost function values of other respective cost functions for the plurality of BHA configurations.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: December 29, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jason D. Dykstra, Venkata Madhukanth Vadali, Xingyong Song, Yiming Zhao
  • Patent number: 10794130
    Abstract: A continuous circulation system and an connection assembly for establishing a threaded fluid seal to a side port of a continuous circulating sub, according an embodiment, is disclosed, having independently rotatable and movable first and second first engagement mechanisms. The first engagement mechanism may include first and second wrenches for engaging a pressure tap, checking pressure, removing and reinstalling a safety plug. The second engagement mechanism may include an adapter pipe for creating a threaded seal with the side port thereby allowing reliable high-pressure flow. The connection assembly automates the steps of checking pressure within the sub between the radial valve and safety plug, removing the safety plug, screwing the threaded adapter pipe into the side port, providing a flow path for drilling fluid, disengaging the threaded adapter pipe, replacing the safety plug and returning the continuous circulation sub to its original operational state.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: October 6, 2020
    Inventors: Rachel Lynn Johnson, Alain J. Belanger, Aurelio Bottino, Gianmaria Leccacorvi, Michael Don Lewis
  • Patent number: 10669779
    Abstract: Creating pressure pulses for pulse telemetry for MWD tools using direct drive. Example embodiments include activating an electric motor of the MWD tool, and thereby turning a motor shaft. Rotating the motor shaft may cause turning of a threaded shaft. Turning the threaded shaft may cause a ball screw nut to translate along the threaded shaft. Translating the ball screw nut may cause translating a piston rod within a cylinder housing. Translating the piston rod may cause movement of the poppet coupled to the piston rod.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: June 2, 2020
    Inventors: Desmond Anderson, Salvador Berberov
  • Patent number: 10648259
    Abstract: The present disclosure relates to methods and systems for controlled delivery of unknown fluids that safely and efficiently removes entrained gas from unknown fluids in the wellbore and/or marine riser. A control system automatically controls one or more choke manifold(s), and optionally the flow rate of one or more mud pump(s), to maximize the safe flow rate of returning unknown fluids to one or more instrumented mud-gas separator(s) without overloading. The control system may receive the state of the one or more instrumented mud-gas separator(s) to manipulate the choke manifold(s), and optionally the one or more mud pump(s) to maximize the safe flow rate of return fluids and expedite the removal of gases.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 12, 2020
    Inventor: Helio Mauricio Ribeiro dos Santos
  • Patent number: 10577912
    Abstract: The invention relates to a system and method of for measuring the characteristics and volume of drill cuttings. The system comprises at least one camera operably connected to a processor for recording characteristics of drill cutting particles wherein said processor is configured to perform particle detection, extract features of said particles, or both. The processor is typically configured to initiate, interrupt or inhibit an automated activity based on the particle characteristics. The method comprises acquiring visual data from at least one camera, performing particle detection using said data, extracting feature data of any detected particles, alerting an operator and/or initiating, interrupting, or inhibiting automated activity.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: March 3, 2020
    Assignee: Helmerich & Payne Technologies, LLC
    Inventor: Peter A. Torrione
  • Patent number: 10508535
    Abstract: A method for drilling a wellbore includes drilling a well along a path substantially along a bedding direction of a selected subsurface formation having at least one substantially vertical fracture therein. A direction of the at least one substantially vertical fracture is determined with respect to a direction of the prior to drilling therethrough. A direction of the path is adjusted so that the well will intersect the at least one substantially vertical fracture substantially perpendicularly to the direction.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: December 17, 2019
    Inventor: Peter T. Wu
  • Patent number: 10487642
    Abstract: A method for directional drilling a subterranean borehole includes transforming surface sensor measurements from time domain sensor data to frequency domain sensor data. A rotary drilling parameter may be changed when a parameter of the frequency domain sensor data reaches a threshold or is within a predetermined range of values.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: November 26, 2019
    Inventors: Marc Haci, Arturo Quezada, Maurice Ringer
  • Patent number: 10473816
    Abstract: A calibration quality associated with a well-drilling apparatus can be determined. A projected value and a calculated value based upon a data set corresponding to a time interval section of a rig state of the well-drilling apparatus can be determined. A difference can be calculated between the projected value and the calculated value. A quality indicator can be applied to the difference, and a calibration quality based upon the application of the quality indicator can be determined.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: November 12, 2019
    Assignee: Schlumberger Technology Corporation
    Inventors: James P Belaskie, Jonathan Dunlop, Jose Luis Sanchez, Richard John Harmer, Maurice Ringer, CuiLi Yang
  • Patent number: 10378333
    Abstract: Systems and methods for using pressure signals to assess effectiveness of a diverter in a stimulation wellbore are disclosed. A pressure signal in an observation wellbore in the subsurface formation may be assessed using a pressure sensor in direct fluid communication with a fluid in the observation wellbore. The fluid in the observation wellbore may be in direct fluid communication with a fracture emanating from the observation wellbore. The pressure signal may include a pressure change that is induced by a fracture being formed from a stimulation wellbore in the subsurface formation. The pressure signal may be a pressure-induced poromechanic signal. The slope in the pressure signal before and after the diverter are provided into the stimulation wellbore may be assessed to determine the effectiveness of the diverter.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: August 13, 2019
    Assignee: Reveal Energy Services, Inc.
    Inventors: Matthew A. Dawson, Günther Kampfer, Lukas Mosser
  • Patent number: 10378331
    Abstract: Methods and systems are described for monitoring the integrity of a subsea pipeline network to transport the production fluid from a subsurface wellhead to surface facilities. More specifically, the described methods and systems are for monitoring the integrity of a riser pipe network and can include installing one or more inclinometers to the buoyancy tank and/or vertical riser structures.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: August 13, 2019
    Assignee: OneSubsea IP UK Limited
    Inventor: Vincent Alliot
  • Patent number: 10329860
    Abstract: A method of drilling a subsea wellbore includes drilling the subsea wellbore and, while drilling the subsea wellbore: measuring a flow rate of the drilling fluid injected into a tubular string; measuring a flow rate of returns; comparing the returns flow rate to the drilling fluid flow rate to detect a kick by a formation being drilled; and exerting backpressure on the returns using a first variable choke valve. The method further includes, in response to detecting the kick: closing a blowout preventer of a subsea pressure control assembly (PCA) against the tubular string; and diverting the flow of returns from the PCA, through a choke line having a second variable choke valve, and through the first variable choke valve.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: June 25, 2019
    Inventors: Said Boutalbi, Michael Brian Grayson
  • Patent number: 10280732
    Abstract: A method including obtaining input attribute values and a target risk attribute value associated with a first borehole segment. The method also includes training a prediction model for the target risk attribute using the input attribute values and the target risk attribute value. The method also includes acquiring subsequent input attribute values. The method also includes using the trained prediction model and the subsequent input attribute values to predict a target risk attribute value for a second borehole segment. The method also includes storing or displaying information based on the predicted target risk attribute value.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: May 7, 2019
    Inventors: Serkan Dursun, Robello Samuel, Aniket
  • Patent number: 10253585
    Abstract: A managed pressure drilling (“MPD”) manifold is adapted to receive drilling mud from a wellbore during oil and gas drilling operations. The MPD manifold includes one or more drilling chokes.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: April 9, 2019
    Inventor: Barton Hickie
  • Patent number: 10240414
    Abstract: A method for regulating a downhole fluid flow rate, in at least some embodiments, comprises partitioning a fluid circulation system into a sequence of segments, the sequence including a pump segment at one end and a drill bit segment at another end; obtaining a desired pressure for the drill bit segment; determining, for each of the segments in the sequence except for the drill bit segment, a desired pressure based at least in part on the desired pressure for a preceding segment in the sequence; determining a pump setting based on the desired pressure for the pump segment; and applying the pump setting to a pump used to move drilling fluid through the fluid circulation system.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: March 26, 2019
    Inventors: Xingyong Song, Jason D. Dykstra
  • Patent number: 10227836
    Abstract: Systems and methods for wellbore strengthening are disclosed. An effective way to strengthen a wellbore and prevent future fractures during drilling operations is to induce fractures having a desired fracture width profile and fracture length. Surface back pressure can be used to accurately induce such fractures. The induced fractures which are then sealed can increase fracture gradient of the wellbore thus mitigating future fractures.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 12, 2019
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Mojtaba Karimi, Don Hannegan, Mojtaba P. Shahri, Ovunc Mutlu
  • Patent number: 10190375
    Abstract: A connection device for connecting a secondary drilling fluids circuit to a drilling element includes a radial aperture. A central body has a first connection portion forming a sealed connection to the secondary circuit. A second connection portion forms a sealed connection to the radial aperture and an intake duct conducts drilling fluids. A clamping system connects the connection device to the drilling element. One opening device is adapted to selectively open and close the radial aperture by acting upon a valve assembly. One coupling device connects the opening device to the valve assembly. The opening device selectively opens and closes the radial aperture by acting upon an obstructor of the valve assembly through rotary movement. The coupling device couples to a clamping element in the obstructor to transfer the rotary movement of the opening device to the obstructor to selectively and securely open and close the radial aperture.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: January 29, 2019
    Assignee: DRILLMEC S.P.A.
    Inventor: Angelo Calderoni
  • Patent number: 10184305
    Abstract: Disclosed embodiments include systems and methods for improving the accuracy of bottom hole pressure control. One example embodiment includes a torque and drag model that calculates the elasticity of the drill string, which is included in a managed pressure drilling control system. The addition of the torque and drag calculations provide more accurate surge/swab effect calculations based on pipe movement corrected for elasticity effects. The results of these calculations will be used in a real-time hydraulics model to determine a setpoint pressure which will be utilized by a MPD choke system. Further, the real-time torque and drag models are calibrated to actual hole conditions in real-time using survey, temperature, pressure and downhole tool data to calculate friction factors in a wellbore.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: January 22, 2019
    Assignee: Halliburton Enery Services, Inc.
    Inventors: James Randolph Lovorn, Robello Samuel, Emad Bakri Yassin Ibrahim
  • Patent number: 10174563
    Abstract: A drill bit is disclosed. The drill bit includes a bit body and a plurality of blades on the bit body. A cutting element is located on one of the plurality of blades and is communicatively coupled to a depth of cut controller (DOCC) located on the one of the plurality of blades. The DOCC is coupled to the cutting element such that the DOCC moves in response to an external force on the cutting element.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 8, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jeffrey Gerard Thomas
  • Patent number: 9995097
    Abstract: Killing a well by diverting flow in a drilling fluid circulation system to maintain kill mud pressure in a discharge piping during the well kill operation. It is determined that a target pressure of the kill mud in the discharge piping is not satisfied by a pressure of the kill mud discharged by a pump into the discharge piping. In response, a pressure of the kill mud is adjusted by at least partially opening a pressure control device to release kill mud into a bypass piping.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: June 12, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Nancy Suzan Davis, Cody Neal Butler
  • Patent number: 9988866
    Abstract: A choke valve assembly, system, and method can be used with a drill string in a wellbore to aid in controlling the bottom hole pressure during drilling of the wellbore. The choke valve assembly can have a primary choke and one or more supplemental chokes, where these choke valves each have a controllable range relative to the flow and pressure of drilling fluid passing through the assembly. A control unit can automatically actuate the primary choke and one or more supplemental chokes in order to both maintain the choke valves within their controllable ranges and concurrently maintain a consistent boom hole pressure in the connected wellbore.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: June 5, 2018
    Inventors: Nancy Suzan Cotten, Eric Miller, Charles Michael Pool
  • Patent number: 9919249
    Abstract: A method and system to recycle water for hydro-excavation includes a vacuum hose to remove a slurry of solids and liquid from hydro-excavation at a site. A debris tank is in fluid communication with the vacuum hose and is used to collect the slurry. The system also includes a filter drum, where a portion of the filter drum is configured to rotate through the slurry to filter the liquids from the solids, where dewatered solids are returned to the site for compaction. In addition, an outlet is in fluid communication with a central portion of the filter drum to return filtered water for use in hydro-excavation at the site.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: March 20, 2018
    Inventor: Don M. Buckner
  • Patent number: 9725974
    Abstract: A well drilling system can include a hydraulics model which determines a modeled fluid friction pressure and a calibration factor applied to the modeled friction pressure, and a flow control device which is automatically controlled in response to a change in the calibration factor. A well drilling method can include drilling a wellbore, a fluid circulating through the wellbore during the drilling, determining a calibration factor which is applied to a modeled fluid friction pressure, and controlling the drilling based at least in part on a change in the calibration factor.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: August 8, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventor: James R. Lovorn
  • Patent number: 9708898
    Abstract: An automated system for detecting fluid influx into a wellbore during the transient conditions that occur after pumps stopped. The system comprises at least one sensor normally employed on a drilling rig for measuring at least one parameter, and a processor for receiving a signal indicative of the parameter from the sensor. The processor is programmed to analyze a plurality of values of the parameter measured during a plurality of previous events so as to generate a predetermined threshold value, compare the received signal to the predetermined threshold value, and provide an output signal indicative of fluid influx when the received signal is beyond the predetermined threshold value.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: July 18, 2017
    Assignee: CoVar Applied Technologies, Inc.
    Inventors: George Martin Milner, Brian Anstey Tarr
  • Patent number: 9506305
    Abstract: A method of drilling a subterranean wellbore using a drill string including the steps of estimating or determining a reduced static density of a drilling fluid based on the equivalent circulating density of the drilling fluid in a section of the wellbore, providing a drilling fluid having substantially that reduced static density, introducing the drilling fluid having said reduced static density into the wellbore, and removing the drilling fluid from the wellbore via a return line.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: November 29, 2016
    Inventors: Christian Leuchtenberg, Pat Savage
  • Patent number: 9470042
    Abstract: A drilling assembly positionable in a well bore includes a turbine motor couplable to a drill string and a harmonic drive transmission coupled to the turbine motor. The harmonic drive transmission includes a circular spline, a wave generator, a flexspline, and a sealing subsystem. The sealing subsystem defines a substantially sealed volume containing the circular spline, wave generator, and flexspline, and isolates the circular spline, wave generator, and flexspline from drilling fluid exiting the turbine motor and flowing through the harmonic drive transmission.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: October 18, 2016
    Inventors: John Kenneth Snyder, Richard Thomas Hay
  • Patent number: 9470070
    Abstract: A method, including: performing dual-side depressurization on a hydrate blockage in a subsea flow line, wherein dual-side depressurization includes, reducing pressure on a topside of the hydrate blockage in the subsea flow line by removing liquid from within a subsea riser with a bubble pump that has a first end in fluid communication with the liquid within the subsea riser, reducing pressure on a backside of the hydrate blockage, and concurrently controlling the reduction in pressure on the topside of the hydrate blockage and the backside of the hydrate blockage.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: October 18, 2016
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Brendon L. Keinath, Jason W. Lachance
  • Patent number: 9429009
    Abstract: A method and system for autonomously enhancing the performance of rig operations at a rig-site, including subterranean operations at a rig-site. The system may include an integrated control system, wherein the integrated control system monitors one or more parameters of sensor units of the rig operations, and a central computer that can communicate with sensor units reporting the health and operational status of the rig operations. The system may further be upgraded by a package of sensors attached to the various tools that allow the central computer an overall synchronized view of the rig operations.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 30, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Marty Paulk, Loyd Eddie East, Jr., Ronald Johannes Dirksen
  • Patent number: 9416605
    Abstract: The present invention relates to a method for determining a variation of a flushing medium flow at a rock drilling apparatus, where a compressor (8;301) discharges a flow of pressurized gas, where said gas flow at least partially is used as flushing medium during drilling with a tool (3), wherein, during drilling, said flushing medium is led to said tool (3) for flushing away drilling remnants. The method includes to determine a rate of a pressure variation of said flushing medium, and generating a signal when said determined rate exceeds a first value. The invention also relates to a system and a rock drilling apparatus.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 16, 2016
    Assignee: Atlas Copco Rock Drills AB
    Inventor: Erik Aldén
  • Patent number: 9388681
    Abstract: Reducing or eliminating stick-slip and vibrations downhole may include controlling top drive torque in order to adjust drill bit angular speed in a manner that prevents, eliminates, or reduces stick-slip and vibration. Control methods and systems may include solving one or more optimization problems including an objective function. The objective function may be subject to conditions including a physical model of the drilling system. The objective function may be minimized without reference to a model, but instead by reference to estimated stick-slip frequency based upon a drill bit angular speed profile. In addition, actual downhole measurements for use in control methods and systems, such as drill bit angular speed, may be estimated using an observer.
    Type: Grant
    Filed: August 17, 2013
    Date of Patent: July 12, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jason Dykstra, Zhijie Sun
  • Patent number: 9297250
    Abstract: In some aspects, an injection treatment of a subterranean region is controlled based on a target net treating pressure. A measure of fluid pressure acting on a subterranean region during an injection treatment is received. The measure of fluid pressure is compared against a target net treating pressure for fluid acting on the subterranean region during the injection treatment. The target net treating pressure is associated with a target fracture growth orientation. The injection treatment is modified based on a result of the comparison.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 29, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ronald Glen Dusterhoft, David Blair Allison
  • Patent number: 9239830
    Abstract: The various embodiments herein provide a method and system for building a relationship hierarchy from big data. The method comprises extracting a plurality of relationships defined between entities from a big data, building relationship recognition models adapted to identify different forms of generic relationships, resolving the relationships by grouping the similar relationships together and separating the relationships which are syntactically and semantically dissimilar and reconciling the resolved relationships to build the relationship hierarchy. The relationship hierarchy comprises groups and subgroups of relationships created based on generic relationship similarity based on a contextual aspect and a specialization aspect using a Language and Domain model. The method of extraction of plurality of relationships from the unstructured data is a self-learning process which uses open information extraction techniques for learning new relationships.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: January 19, 2016
    Inventors: Sridhar Gopalakrishnan, Sujatha Raviprasad Upadhyaya
  • Patent number: 9228393
    Abstract: Drilling laterals in shale formations. At least some of the illustrative embodiments are methods including: drilling a deviated borehole through a shale formation with a drill string comprising a drill bit; logging the shale formation with a logging tool disposed within the drill string; estimating, in real time with the drilling, fracture potential of a portion of the shale formation near the drill bit, the estimation of fracture potential based on information acquired by the logging tool; and controlling drilling direction based on the fracture potential.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: January 5, 2016
    Assignee: Landmark Graphics Corporation
    Inventors: Richard B. Logan, Stephen R. Ingram, Martin D. Paulk, Hamayun Z. Raja
  • Patent number: 9194194
    Abstract: An apparatus and method is provided for controlling the coordination of pressure control equipment such as a BOP stack and/or a snubbing unit and/or other pressure control equipment in a well completion system while moving pipes into or out of a wellbore under pressure. In one embodiment, a moveable clamp and a fixed clamp are provided. The moveable clamp is clamped to a pipe while the fixed clamp is open so that the moveable clamp either moves the pipe into the well or pulls it out of the well. The fixed clamp is then clamped to the pipe. The moveable clamp is unclamped and moves to another position whereupon the process is repeated. A computer controls operation of the moveable clamp, fixed clamp, seals, and pipe moving equipment which moves pipe into and out of the mast.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 24, 2015
    Inventor: Mark J. Flusche
  • Patent number: 9175531
    Abstract: A method of identifying a self-sustained influx of formation fluids into a wellbore includes the steps of closing an annular shut-off device and diverting an annular return flow from the wellbore through a first flow rate measurement device, measuring a flow rate of said annular return flow, measuring an inlet flow rate of fluids entering the well through a second flow rate measurement device in a fluid injection line, and identifying a self-sustained influx of formation fluids if a non-decreasing measured annular return flow rate is greater than said measured inlet flow rate.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: November 3, 2015
    Assignee: Safekick Ltd.
    Inventors: Helio Santos, Paul L. Sonnemann
  • Patent number: 9068419
    Abstract: Diverting flow in a drilling fluid circulation system to regulate drilling fluid pressure. A pump of a drilling fluid pressure regulation system for a well bore can discharge drilling fluid through discharge piping at flow rate. A pressure control device has an inlet connected to the discharge piping and an outlet connected to bypass piping. A processor connected to the pump and the pressure control device can adjust the pressure control device to modify a pressure of the drilling fluid by at least partially opening the pressure control device and releasing drilling fluid into the bypass piping at a selected flow rate. The processor can modify the drilling fluid flow rate in the discharge piping based on the pressure represented by the pressure measurement signals and the selected flow rate in the bypass piping such that the target pressure parameter of the drilling fluid in the discharge piping is satisfied.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 30, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Nancy Suzan Davis, Cody Neal Butler
  • Patent number: 9057236
    Abstract: A method for operating a dual drill string disposed in a wellbore, the string having a shutoff valve for at least a fluid return drill string therein proximate a bottom end thereof includes pumping fluid into the fluid return string such that a pressure therein is substantially equal to a fluid pressure in the wellbore. Circulation of fluid in the wellbore is initiated by pumping fluid into a fluid supply string of the dual drill string such that the shutoff valve on the fluid return string opens to enable the fluid leaving the wellbore to enter the fluid return string.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: June 16, 2015
    Assignee: Reelwell, A.S.
    Inventors: Tore Høgset, Harald Syse
  • Patent number: 9051803
    Abstract: A control apparatus for use in controlling the fluid pressure in a borehole during drilling of the borehole, the apparatus including an inlet suitable for connection to a pump, a main outlet suitable for connection to a drill pipe, and an overflow outlet suitable for connection to a fluid reservoir, the inlet being connected to the main outlet by a main flow conduit, and the overflow outlet being connected to the main flow conduit by means of an overflow conduit, wherein the overflow conduit is provided with a pressure regulator by means of which the pressure of fluid in the main flow conduit may be maintained at or around a predetermined pressure value.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 9, 2015
    Assignee: Managed Pressure Operations PTE LTD
    Inventor: Christian Leuchtenberg
  • Publication number: 20150144400
    Abstract: A pressure containment device for containing pressure in an annulus around a tubular body, the device comprising a housing having an axis and a passage extending generally parallel to the housing axis, and a seal assembly comprising a seal located in the housing to surround and enter into sealing engagement with a tubular body extending along the passage, wherein the housing is provided with a returns outlet port, an injection port, and an overflow outlet port, all of which extend through the housing from the exterior of the housing into the passage, the injection port being located between the returns outlet port and a first end of the seal, and the overflow outlet port being located adjacent a second, opposite end of the seal, and thus being separated from the injection port by the seal.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 28, 2015
    Applicant: Managed Pressure Operations Pte. Ltd.
    Inventors: Christian LEUCHTENBERG, George MICHAUD
  • Patent number: 9033064
    Abstract: A method of monitoring a well for unwanted formation fluid influx is disclosed. Measurements of well outflow are acquired during a period in which drilling operations are performed for the well. Occurrences of stagnant flow events during the period are determined. An outflow signature is generated from the well outflow measurements for each stagnant flow event. The outflow signatures are displayed sequentially in time of occurrence. Each outflow signature is analyzed for an anomaly.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 19, 2015
    Inventor: William Leo Koederitz
  • Publication number: 20150129306
    Abstract: A method for optimizing drilling includes initializing values of a plurality of drilling operating parameters and drilling response parameters. In a computer, an initial relationship between the plurality of drilling operating parameters and drilling response parameters is determined. A drilling unit to drill a wellbore through subsurface formations. The drilling operating parameters and drilling response parameters are measured during drilling and entered into the computer. A range of values and an optimum value for at least one of the drilling response parameters and at least one of the drilling response parameters is determined in the computer. A display of the at least one of the plurality of drilling operating parameters and the at least one of the drilling response parameters is generated by the computer.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Inventors: Chunling Gu Coffman, Rustam Isangulov, Oney Erge, John Christian Luppens, Ginger Hildebrand, Wayne Kotovsky
  • Patent number: 9019118
    Abstract: A drilling control system monitors and compares drilling and completion operation sensor values and autonomously acts in response to conditions such as a kick or surge. Sensors in various combinations may monitor return fluid flow rate, fluid inflow rate, wellhead bore pressure, temperature of returning fluid, torque, rate of penetration and string weight change. The control system has corresponding control logic to monitor, warn and act based on the sensor inputs. The actions may include the warning of support personnel, closing an annular blowout preventer, shearing drill pipe using a ram shear, pumping heavier fluid down choke and kill lines, disconnecting the riser or various other actions.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: April 28, 2015
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Eric L. Milne, Joseph P. Ebenezer
  • Publication number: 20150107898
    Abstract: A method of drilling a subterranean wellbore using a drill string comprising the steps of: a. injecting a drilling fluid into the well bore via the drill string and removing said drilling fluid from an annular space around the drill string (the annulus) via an annulus return line, b. oscillating the pressure of the fluid in the annulus, c. determining the wellbore storage volume and wellbore storage coefficient for each fluid pressure oscillation, d. using the wellbore storage volume and wellbore storage coefficient to determine the proportion by volume of gas and proportion by volume of liquid in the annulus during that pressure oscillation.
    Type: Application
    Filed: May 3, 2013
    Publication date: April 23, 2015
    Inventor: Christian Leuchtenberg
  • Patent number: 9010459
    Abstract: Air compressor systems, upgrade kits, computer readable medium, and methods for controlling an air compressor for improved performance. The methods may include receiving a working air requirement; determining an estimated air pressure of the air compressor to deliver the working air requirement; measuring a pressure of the air compressor; comparing the measured pressure with the calculated estimated air pressure; if the measured pressure of the air compressor is greater than the determined estimated air pressure by a predetermined greater amount, then decreasing an output control of the air compressor; and if the measured pressure of the air compressor is less than the calculated estimated air pressure by a predetermined lesser amount then increasing the output control of the air compressor. The air compressor may be controlled based on a measured pressure of delivered working air. An oil control system may shut off oil to parts of the air compressor.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: April 21, 2015
    Assignee: Sandvik Intellectual Property AB
    Inventors: Grant Andrew Field, Simo Tanner, Karl Ingmarsson
  • Patent number: 8967244
    Abstract: A system is provided for communicating within a borehole using controlled vibrations. A movement mechanism uses mechanical energy provided by a mechanical energy source to enable translational movement of a first surface relative to a second surface to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats. The vibration beats will occur whenever the mechanical energy is provided by the mechanical energy source at one of at least three impact levels. A vibration control mechanism selectively controls an amplitude of the plurality of vibration beats to encode information therein. The amplitude of a vibration beat is selectively controlled by regulating the impact of the first surface and the second surface to one of the at least three impact levels.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: March 3, 2015
    Assignee: Hunt Advanced Drilling Technologies, LLC
    Inventor: Todd W. Benson
  • Patent number: 8955619
    Abstract: Embodiments of the present invention include methods and apparatus for dynamically controlling pressure within a wellbore while forming the wellbore. In one aspect, one or more pressure control apparatus are used to maintain desired pressure within the wellbore while drilling the wellbore. In another aspect, pressure is dynamically controlled while drilling using foam to maintain a substantially homogenous foam flow regime within the wellbore annulus for carrying cuttings from the wellbore.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: February 17, 2015
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Frederick T. Tilton, David M. Haugen, Kevin W. Smith, David J. Brunnert, Thomas F. Bailey, Tom Fuller, Roy W. Rooyakkers, Ram K. Bansal, Graham Skinner
  • Publication number: 20150041213
    Abstract: Injection of gas into a managed pressure drilling system to provide for operation of the drilling system in a downhole pressure window defined by the pore pressure of a formation being drilled and a fracture pressure of the formation. Gas injection being controlled so as to produce the desired downhole pressure without causing large oscillations in borehole pressure.
    Type: Application
    Filed: May 25, 2012
    Publication date: February 12, 2015
    Inventors: Benjamin P. Jeffryes, Ashley Bernard Johnson
  • Patent number: 8950512
    Abstract: A method and apparatus for estimating the instantaneous rotational speed of a bottom hole assembly at the lower end of a drill string. In one embodiment, a method includes driving the drill string by a drilling mechanism at the upper end of the drill string. A fundamental frequency of stick-slip oscillations suffered by the drill string is estimated. Variations in a drive torque of the drilling mechanism are determined. Known torsional compliance of the drill string is combined with the variations in the drive torque. An output signal representing the instantaneous rotational speed is provided.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: February 10, 2015
    Assignee: National Oilwell Varco, L.P.
    Inventors: Pal Jacob Nessjoen, Age Kyllingstad
  • Publication number: 20140352951
    Abstract: Back pressure control devices used to control fluid pressure in a wellbore require various utilities for operation, such as an air supply. Apparatus disclosed herein provide for the continued operation of one or more back pressure control devices when supply of utilities for operation of the back pressure control devices are intentionally or unintentionally interrupted.
    Type: Application
    Filed: December 13, 2012
    Publication date: December 4, 2014
    Inventors: Roger Suter, David Molley