Borehole Direction Or Inclination Patents (Class 33/304)
  • Patent number: 10288764
    Abstract: A method of estimating one or both of compaction or subsidence of a subterranean formation with gravity measurements. The free air gradient at surface is measured and compared with gravity measured in a borehole that intersects the formation. At a later point in time, values for gravity are re-measured, differences between the measured values at the initial point in time, and the later point in time are estimated. The differences are used to estimate the compaction or subsidence. A gravimeter can be used for measuring gravity, markers in the formation can be used in conjunction with the gravimeter.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: May 14, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Carl Edwards, Mohamed Daoud, Sebastian Csutak, Alexandr Nikolaevich Vasilevskiy
  • Patent number: 10260500
    Abstract: A downhole dynamometer for a rod pumping unit is provided. The downhole dynamometer includes a shell within which a plurality of sensors, a non-transitory memory, and a dynamometer controller are located. The shell is configured to be coupled to a sucker rod string of the rod pumping unit and disposed in a well opposite a wellhead of the well. The plurality of sensors is configured to measure downhole accelerations of the sucker rod string and to measure a downhole load on the sucker rod string. The dynamometer controller is coupled to the plurality of sensors and the non-transitory memory. The dynamometer controller is configured to periodically collect measurements from the plurality of sensors and store the measurements in the non-transitory memory.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: April 16, 2019
    Assignee: General Electric Company
    Inventors: Xuele Qi, Cheng-Po Chen, Grant Lynn Hartman, Yizhen Lin, David Mulford Shaddock
  • Patent number: 10214964
    Abstract: A downhole closed loop method for controlling a drilling toolface includes measuring first and second attitudes of the subterranean borehole at corresponding first and second upper and lower survey stations. The first and second attitudes are processed downhole while drilling to compute an angle change of the subterranean borehole between the upper and lower survey stations. The computed angle change is compared with a predetermined threshold. This process may be continuously repeated while the angle change is less than the threshold. The first and second attitudes are further processed downhole to compute a toolface angle when the angle change of the subterranean borehole is greater than or equal to the threshold. The toolface angle may then be further processed to control a direction of drilling of the subterranean borehole.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: February 26, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Peter Hornblower, Christopher C. Bogath, Adam Bowler, Junichi Sugiura
  • Patent number: 10145088
    Abstract: A control system comprising a position information generation unit configured to operate three modes to output position information: a first mode in which information about the position detected by a position detection apparatus is output as position information related to the position of a work machine, when the position determination is normal, a second mode in which information about a position obtained by using both of a particular point as a reference of the work machine obtained before a position determination becomes abnormal and operation information detected by a status detection apparatus is output as the position information, when the position determination is abnormal and the work machine is a static status, and a third mode in which the position information is not output, when the position determination is abnormal and the work machine is in a non-static status.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: December 4, 2018
    Assignee: Komatsu Ltd.
    Inventors: Yasuo Kanemitsu, Yoshiki Kami
  • Patent number: 10047598
    Abstract: A technique provides for the combined use of a tool and a sensor system to deploy a subsea structural casing. The tool has an engagement region configured to couple with the subsea structural casing. The sensor system is operatively coupled with the tool and comprises a plurality of sensors. The sensors are used to monitor height of the subsea structural casing above a mud line as well as angular deviation of the structural casing during deployment of the subsea structural casing into a seabed.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: August 14, 2018
    Assignee: OneSubsea IP UK Limited
    Inventor: James Stephens
  • Patent number: 9976408
    Abstract: A navigation device for surveying and directing a borehole comprises: a first gyro including a first sensitive axis and a second sensitive axis; a second gyro including at least a third sensitive axis; and a driving unit configured to orient the second gyro in a first mode in a first position in which an earth acceleration dependent error on the second gyro is insignificant and to orient the second gyro in a second mode in a second position in which the third sensitive axis is perpendicular to the first sensitive axis and perpendicular to the second sensitive axis.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 22, 2018
    Assignee: ImDex Global B.V.
    Inventors: Dieter Goetze, Steve Toghill
  • Patent number: 9804288
    Abstract: A system method and computer-readable medium for correcting measurements obtained by a down hole tool for residual measurement errors is disclosed. A down hole tool having at least two directional field sensors is disposed in a borehole. The at least two directional sensors are substantially orthogonal to each other and to a longitudinal axis of the down hole tool. Measurements are obtained from the at least two directional sensors during rotation of the tool by at least 360 degrees around the longitudinal axis of the tool. Residual measurement errors are determined for the obtained measurements, and a quality level of the determined residual measurement errors selected. The determined residual measurement errors are applied to the obtained measurements when the determined residual measurement errors are consistent with the selected quality level.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 31, 2017
    Assignee: BAKER HUGHES, a GE COMPANY, LLC
    Inventors: Robert A. Estes, Randy R. Riggs, Francis Chad Hanak, John F. Priest
  • Patent number: 9714548
    Abstract: A borehole logging instrument sonde employs a case in which support electronics including a processor are mounted. A rotatable platform is mounted within the case and carries an inertial measurement unit (IMU) and a roll axis gyroscope. A motor is adapted to rotate the rotatable platform within the case. The processor receives an input from the roll axis gyroscope and provides an output to the motor responsive to the input for control of rotation of the platform to space stabilize and isolate the IMU from the roll of the instrument sonde.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: July 25, 2017
    Assignee: FLEXIT AUSTRALIA PTY LTD.
    Inventors: Timothy M. Price, Cory Wilson, Christopher Thomas Koplan
  • Patent number: 9611732
    Abstract: A locator device and methods of use are disclosed. The locator device includes a first locating system configured to generate to sense an electromagnetic field emanating from a sonde associated with a drill head, and a second locating system including a global positioning system. The locator device includes a display on the locating system configured to display a map of the area in which the locator device resides based on a location detected by the global positioning system. The locator device also includes control electronics configured to, upon receipt of an input from a user, record location data in a memory associated with the locator device for use by a horizontal directional drilling control system.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 4, 2017
    Assignee: Vermeer Manufacturing Company
    Inventors: Scott Alan Rempe, Tony Briggs, David Hanson, Keith Sjostrom, Nathan Copeland, Hans Kelpe, Tod Michael, Chad Van Soelen
  • Patent number: 9597156
    Abstract: A system tracks an object in computer-assisted surgery. The system comprises a sensor unit secured to the femur. Gyroscopes on the sensor unit produce readings related to orientation data about three axes of rotation. A tracking unit receives the gyroscope readings. An axis calibrator on the tracking unit comprises a calculator for adding at least part of the gyroscope readings for specific movements of the object about a desired axis. An axis normalizer on the tracking unit determines an orientation of the desired axis with respect to the sensor unit from the added gyroscope readings. A tracking processor tracks the desired axis from the gyroscope readings. An interface displays orientation data for the object from a tracking of the desired axis. A method for tracking an object with a gyroscope sensor unit is also provided.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: March 21, 2017
    Assignee: ORTHOSOFT INC.
    Inventors: Louis-Philippe Amiot, Joel Zuhars, Catherine Proulx, Mynam Valin, Tin Nguyen, Benoit Pelletier, Karine Duval, Alain Richard, Rula Kiblawi, Yannick Boutin
  • Patent number: 9366131
    Abstract: A downhole drilling vibration analysis involves measuring orientation data in at least two orthogonal axes downhole while drilling with a drilling assembly. For example, two orthogonal magnetometers can be used. A toolface of the drilling assembly is determined using the measured sensor data, and velocity (RPM) values for the toolface for a plurality of revolutions of the drilling assembly are determined. From these determined values, a coefficient of variation for the toolface velocity (RPM) values for the revolutions of the drilling assembly is calculated. When a pattern in found in the toolface velocity (RPM) and/or the calculated coefficient of variations exceed one or more thresholds, the processing device determines that detrimental vibrations are occurring in the drilling assembly.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: June 14, 2016
    Assignee: Precision Energy Services, Inc.
    Inventors: Charles Mauldin, Roger Bartel, Richard Berns
  • Patent number: 9316063
    Abstract: A system for applying power into a wellbore. The system can include a casing, a tubing string, a first and second isolator sub, a power source, and an electrical device. The casing has a first cavity running therethrough. The tubing string is disposed within the first cavity without contacting the casing, where the tubing string has a second cavity running therethrough. The first isolator sub is mechanically coupled to the tubing string and positioned between the neutral section and the power-transmitting section of the tubing string. The power source is electrically coupled to the power-transmitting section of the tubing string below the first isolator sub. The second isolator sub is mechanically coupled to the tubing string and positioned between the bottom neutral section and the power-transmitting section of the tubing string. The electrical device is electrically coupled to a bottom end of the power-transmitting section of the tubing string.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 19, 2016
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Manuel Eduardo Gonzalez, Melvin Clark Thompson, Jacobo Archuleta, Patrick Rodriguez, David William Beck, Scot Ellis, Wade Ogg
  • Patent number: 9297249
    Abstract: Methods for improving wellbore survey accuracy and placement are disclosed. The Earth's magnetic field may be measured at a magnetically clean surface location and correlated with a non-magnetic reference direction to obtain a direction of the Earth's field (e.g., a magnetic declination or a magnetic inclination). The direction of the Earth's magnetic field may in turn be processed in combination with magnetic measurements made in a subterranean borehole to obtain one or more survey parameters.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: March 29, 2016
    Inventors: Graham A. McElhinney, Leon Ceh, Euan Forbes, Kenneth Stenerson
  • Patent number: 9267862
    Abstract: A method and system for monitoring the integrity of a structure such as a building or a bridge includes taking accelerometer readings using an accelerometer and taking inclinometer readings using an inclinometer. The accelerometer and inclinometer each take readings in at least one axis, with one coincident axis between the two. The accelerometer readings are preferentially sampled at a higher rate than the inclinometer readings. Accelerometer readings verify inclinometer readings, and vice-versa. Using acceleration readings, it can be determined whether, when, and at what frequency inclination readings should be taken. The inclinometer can be powered down as long as accelerometer readings indicate that the environment would strain the inclinometer. Inclinometer readings can also be modified and corrected using inclinometer readings. Data accuracy and reliability are enhanced, and the overall integrity of a structure is dynamically monitored even as the structure and its environment change over time.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: February 23, 2016
    Assignee: SENSR MONITORING TECHNOLOGIES LLC
    Inventors: Christopher Lee Kavars, Leslie Davis
  • Patent number: 9222308
    Abstract: A method for drilling operation in a subterranean formation, including calculating, by a hardware processor and in response to determining that an magnitude of gyro data representing rotations of a drill bit in a bottom hole assembly (BHA) and a time derivative of the gyro data are within a pre-determined range, a drift parameter of the gyro data, analyzing, by the hardware processor, the gyro data based on the drift parameter to generate a stick-slip alert, and presenting the stick-slip alert.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: December 29, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Firas Zeineddine, Maja Ignova
  • Patent number: 9146108
    Abstract: The method of aligning an inertial unit having an axially symmetrical vibrating sensor that generates vibration comprises the step of establishing the vibration in a position for which the sensor presents variation in drift error that is the smallest relative to variation in drift error for other positions of the vibration.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: September 29, 2015
    Assignee: SAGEM DEFENSE SECURITE
    Inventor: Jean-Michel Caron
  • Patent number: 8881414
    Abstract: Downhole tools are provided for measuring the inclination of a portion of a drill string. In certain embodiments, downhole tools for measuring inclination comprise a catch system for measuring inclination and a pressure pulse signaling system for communicating inclination measurement information to the surface. Catch systems for measuring inclination include a series of disc mounted on an upper shaft, each disc having a ball disposed thereon.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: November 11, 2014
    Inventor: Matthew J. Barnes
  • Patent number: 8874407
    Abstract: A measurement means for a downhole tool for determining the orientation of the axis of a downhole tool in relation to true north. It includes a gyro sensor capable of measuring angular rate, a rotation means for rotating the gyro sensor about a sensor axis, a measurement means to detect the angular rate at the gyro sensor as it is rotated to form a series of readings, and a processor capable of interpreting the signal amplitude from the series of readings and determining the points of greatest signal amplitude. The processor is also being capable of comparing the phase difference between the actual readings taken against what would be generated with the sensor pointing true north thus providing a downhole tool axis angular deviation from true north. The rotation means rotates the gyro sensor in discrete steps.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Antech Limited
    Inventors: Antoni Miszewski, Richard Stevens, Benjamin Brooking
  • Patent number: 8806769
    Abstract: A bulls eye indicator device and method of manufacture used to measure the two-dimension angle of inclination of equipment that is mounted on a sea bed. A base and transparent window are sealed and fastened together. The transparent window is spherical and forms a dome. A volume between the base and transparent window is filled or substantially filled with liquid. A floating sphere floats against the two-dimensional angular degree indicia.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: August 19, 2014
    Inventor: Hoon Kiang Tan
  • Publication number: 20140102794
    Abstract: Methods and systems for evaluating the subterranean formation of a wellbore are provided. In one embodiment, a geographical orientation of a downhole tool relative to Earth may be determined. The downhole tool may include a coring tool positioned to extract a core sample from a formation of the Earth. The orientation of the core sample with respect to the down hole tool also may be determined. Further, based on the geographical orientation of the downhole tool and the orientation of the coring sample, a geographical orientation of the core sample with respect to the Earth may be determined.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 17, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: George Christopher Tevis, Mark Milkovisch, Kai Hsu
  • Publication number: 20140026428
    Abstract: Downhole tools are provided for measuring the inclination of a portion of a drill string. In certain embodiments, downhole tools for measuring inclination comprise a catch system for measuring inclination and a pressure pulse signaling system for communicating inclination measurement information to the surface. Catch systems for measuring inclination include a series of disc mounted on an upper shaft, each disc having a ball disposed thereon.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 30, 2014
    Applicant: MAGNUM DRILLING SERVICES, INC.
    Inventor: MATTHEW J. BARNES
  • Patent number: 8600115
    Abstract: A method for reconstructing a borehole image includes determining a spatial sensitivity function for a borehole imaging tool and using the imaging tool to obtain a borehole image of a subterranean formation. A reconstructed image is then computed from the borehole image and the spatial sensitivity function.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: December 3, 2013
    Assignee: Schlumberger Technology Corporation
    Inventor: Zhipeng Liu
  • Patent number: 8528219
    Abstract: Downhole tools are provided for measuring the inclination of a portion of a drill string. In certain embodiments, downhole tools for measuring inclination comprise a catch system for measuring inclination and a pressure pulse signaling system for communicating inclination measurement information to the surface. Catch systems for measuring inclination include a series of disc mounted on an upper shaft, each disc having a ball disposed thereon.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: September 10, 2013
    Assignee: Magnum Drilling Services, Inc.
    Inventor: Matthew J. Barnes
  • Patent number: 8489333
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to obtain hole azimuth data or inclination data associated with a chassis (e.g., comprising a measurement or logging tool) in a borehole using interpolated data or survey data, and to determine magnetic field orientation of the chassis using a portion of the hole azimuth data, a portion of the inclination data, relative bearing data, and Earth magnetic field orientation data by reconstructing at least a portion of borehole magnetic field data that is corrupt or missing. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: July 16, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Clovis Bonavides, Philip William Tracadas
  • Publication number: 20130153298
    Abstract: A wireless communication network and method are described for enhancing cell-edge performance of a wireless transmit/receive unit (WTRU). The WTRU may establish a connection with a plurality of sites via respective downlinks (DLs). Each DL may include at least one DL component carrier (CC) that operates on a frequency that is the same or different than one or more of the other CCs. The sites may manipulate their transmit power for a particular CC operating frequency such that the distance from a particular one of the sites to its cell boundary may become larger by increasing its transmit power on the particular frequency, and the distance from at least one of the other sites to its respective cell boundary may become smaller by decreasing its transmit power on the particular frequency. Thus, a coverage overlap between different CC frequencies may be created while maintaining a frequency reuse pattern of one.
    Type: Application
    Filed: February 19, 2010
    Publication date: June 20, 2013
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Philip J. Pietraski, Rui Yang, Kai Li, Carl Wang, Tao Deng, Samian Kaur, Erdem Bala, Ravikumar V. Pragada
  • Patent number: 8456159
    Abstract: A stabilized field sensor apparatus collects field data, in particular magnetic field data, with reduced motion noise. The apparatus includes a tear drop shaped housing, a tow frame in the housing, a plurality of vibration isolating dampers spaced around the frame, a base assembly mounted to the dampers, a support pedestal having a bottom end fixed to the base assembly and an upper free end, a single spherical air bearing connected to the upper free end of the pedestal, an instrument platform with a lower hollow funnel having an upper inside apex supported on the air bearing for a one point support, principal and secondary gyro stabilizers for maintaining pivotal and rotational stability, and at least one field sensor mounted to the instrument platform for collecting the field data while being stabilized against motion noise including vibration, pivoting and rotation from the base assembly, from the tow frame and from the housing.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: June 4, 2013
    Assignee: Vale S.A.
    Inventors: Benjamin David Polzer, Gordon Fox West, Peter Whyte Walker, Peter Anthony Hurley, Robert Leslie Scott Hogg
  • Publication number: 20130091716
    Abstract: In one aspect a method of determining direction east is provided that in one embodiment includes dropping objects under influence of gravity, determining locations where the objects drop, and determining the direction east from the locations where the objects drop.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 18, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Rocco DiFoggio
  • Publication number: 20120303279
    Abstract: A method and apparatus for estimating an orientation of a downhole device conveyed into a well on a conveyance device is disclosed. The apparatus includes a first sensor and a second sensor placed circumferentially spaced apart on the device to provide measurements relating to a selected downhole parameter. A processor is configured to estimate the orientation of the downhole device using a phase difference between the measurements of the first sensor and the second sensor.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 29, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Frank Cully Firmin
  • Publication number: 20120279076
    Abstract: Downhole tools are provided for measuring the inclination of a portion of a drill string. In certain embodiments, downhole tools for measuring inclination comprise a catch system for measuring inclination and a pressure pulse signaling system for communicating inclination measurement information to the surface. Catch systems for measuring inclination include a series of disc mounted on an upper shaft, each disc having a ball disposed thereon.
    Type: Application
    Filed: August 17, 2010
    Publication date: November 8, 2012
    Inventor: Matthew J. Barnes
  • Patent number: 8061048
    Abstract: An apparatus for azimuth measurements is provided. The apparatus comprises a housing and a plurality of gyro sensors aligned in the housing. Each of the plurality of gyro sensors has an input axis for angular velocity measurements. There is provided a drive unit for rotating each of the plurality of gyro sensors about a rotation axis. Each of the plurality of gyro sensors changes orientation of the input axis with the drive unit.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 22, 2011
    Assignees: Schlumberger Technology Corporation, Tamagawa Seiki Co., Ltd.
    Inventors: Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Juei Igarashi, Tsutomu Yamate
  • Patent number: 8061047
    Abstract: Methods and related systems are described for downhole positioning of sensors such as accelerometers, gyroscopes, tiltmeters and geophones. The sensor or sensors are mounted within the spherical rotor of a spherical motor such that the device can be actively positioned in one or more orientations by activating the spherical motor.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: November 22, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Juei Igarashi, Brian W. Cho, Hideyuki Kamei, Hitoshi Sugiyama, Paolo Primiero, Hitoshi Tashiro
  • Patent number: 8006396
    Abstract: A measuring device, for measuring a deviation of a body to determine an amount of shimming requisite for the body, includes an elongated member, a level indicating member, a gauge member and a jack screw member. The level indicating member is disposed on the elongated member. The gauge member is disposed on the elongated member, and the jack screw member is disposed adjacent to the gauge member on the elongated member. The elongated member may be placed on the body for measuring the deviation of the body to determine the amount of shimming requisite for the body. The jack screw member is capable of adjusting the elongated member on the body until the level indicating member indicates a horizontal orientation of the elongated member on the body. The gauge member is capable of measuring the deviation of the body, at the horizontal orientation of the elongated member on the body.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: August 30, 2011
    Inventor: Donald Ilton
  • Publication number: 20110194806
    Abstract: A tilt meter includes a housing structure defining an inner chamber sealed from an environment outside the housing structure. First and second optical fiber sections are provided in the inner chamber. The second optical fiber section is optically coupled to the first optical fiber section, with the second optical fiber section rotated azimuthally with respect to the first optical fiber section. The first and second optical fiber sections are arranged to receive light transmitted from a remote light source, and a tilt of the housing structure induces a differential pressure within the inner chamber to be detected by the first and second optical fiber sections.
    Type: Application
    Filed: February 8, 2010
    Publication date: August 11, 2011
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Arthur H. Hartog, Robert Greenaway
  • Patent number: 7954252
    Abstract: Example methods and apparatus to determine and use wellbore diameters are disclosed. A disclosed example method comprises positioning a downhole tool in a wellbore, counting a number of rotations of a motor used to cause the downhole tool to contact a surface of the wellbore, and determining a diameter of the wellbore based on the number of rotations of the motor.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: June 7, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: James Mather, Ashers Partouche
  • Patent number: 7942204
    Abstract: A method of using a survey system comprising at least one sensor. The method comprises operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a first resolution level while the sensor is a first distance relative to the Earth's surface and operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a second resolution level while the sensor is a second distance relative to the Earth's surface. The second distance is larger than the first distance. The second resolution level is higher than the first resolution level.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: May 17, 2011
    Assignee: GYRODATA, Incorporated
    Inventors: Eric Wright, James Frederick Brosnahan, Greg Allen Neubauer
  • Patent number: 7730625
    Abstract: A gyroscopically-oriented survey tool, includes a housing having an axis. Three accelerometers are mounted in the housing with their axis set orthogonally. A first of the axis is aligned to the axis of the housing. A second of the axis is perpendicular to the first. A third of the axis is perpendicular to both of the first and the second. Three gyroscopes are mounted pseudo-orthogonally in the housing with their axis set at relative angles of other than 90 degrees. None of the axis of the gyroscopes are mounted parallel to the axis of the accelerometers. This configuration permits data from the accelerometers to be used to check the quality of data from the gyroscopes.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: June 8, 2010
    Assignee: Icefield Tools Corporation
    Inventor: Erik Blake
  • Patent number: 7725263
    Abstract: Aspects of this invention include methods for surveying a subterranean borehole. In one exemplary aspect, a change in borehole azimuth between first and second longitudinally spaced gravity measurement sensors may be determined directly from gravity measurements made by the sensors and a measured angular position between the sensors. The gravity measurement sensors are typically disposed to rotate freely with respect to one another about a longitudinal axis of the borehole. Gravity MWD measurements in accordance with the present invention may be advantageously made without imposing any relative rotational constraints on first and second gravity sensor sets. The present invention also advantageously provides for downhole processing of the change in azimuth between the first and second gravity sensor sets. As such, Gravity MWD measurements in accordance with this invention may be advantageously utilized in closed-loop steering control methods.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: May 25, 2010
    Assignee: Smith International, Inc.
    Inventor: Junichi Sugiura
  • Patent number: 7712223
    Abstract: An apparatus for azimuth measurements comprises an elongated housing, a plurality of gyro sensors, each of the gyro sensors having an input axis for angular velocity measurements, spherical sensor holders arranged along the longitudinal direction of the housing, at least one motor for driving the sensor holders, a transmission mechanism for transmitting a rotation force from the motor to each of the sensor holders and a controller for controlling a rotation of the motor. Each of the sensor holders has one of the gyro sensors and is rotatable about a rotation axis so as to change the orientation of the input axis of the gyro sensor.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: May 11, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Juei Igarashi, Tsutomu Yamate
  • Publication number: 20100096186
    Abstract: Systems and methods for controlling a drill string are provided. A method comprises receiving one or more first signals from a first sensor package mounted in a first portion of the drill string at a first position within a wellbore. The first signals may be indicative of an orientation of the first portion of the drill string. The method also includes receiving one or more second signals from a second sensor package mounted in a second portion of the drill string at a second position within the wellbore. In certain embodiments, the second signals indicative of an orientation of the second portion of the drill string. The drill string may be adapted to bend between the first portion and the second portion and certain embodiments include calculating a first amount of bend between the first portion and the second portion in response to the first signals and the second signals.
    Type: Application
    Filed: October 28, 2009
    Publication date: April 22, 2010
    Applicant: GYRODATA, INCORPORATED
    Inventors: Roger Ekseth, John Lionel Weston
  • Publication number: 20100077623
    Abstract: An apparatus for azimuth measurements comprises an elongated housing, a plurality of gyro sensors, each of the gyro sensors having an input axis for angular velocity measurements, spherical sensor holders arranged along the longitudinal direction of the housing, at least one motor for driving the sensor holders, a transmission mechanism for transmitting a rotation force from the motor to each of the sensor holders and a controller for controlling a rotation of the motor. Each of the sensor holders has one of the gyro sensors and is rotatable about a rotation axis so as to change the orientation of the input axis of the gyro sensor.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 1, 2010
    Applicants: Schlumberger Technology Corporation, Tamagawa Seiki Co., Ltd.
    Inventors: TSUNEHIKO IMAMURA, AKIRA KAMIYA, SHIGERU SATO, JUEI IGARASHI, TSUTOMU YAMATE
  • Patent number: 7685732
    Abstract: An orientation sensing apparatus includes a rotatable first member, an orientation sensor device fixed with the first member for generating orientation data relating to an orientation sensor device orientation, and a rotation sensor device for generating rotation data relating to rotation of the first member. A method for determining an orientation includes assembling a set of sensor data including the orientation data and rotation data and processing the set of sensor data to generate a set of corrected orientation data. The set of corrected orientation data includes the orientation data which has been corrected using the rotation data to reduce the effects of rotation of the first member and misalignment of the gravity sensor device. One or more sets of corrected orientation data may be processed to determine an inclination orientation of the first member or a toolface orientation of a second member which is connected with the first member.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: March 30, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Evan L. Davies, Gary L. Donison, Boguslaw Wiecek, Byron J. Sand, Clint P. Lozinsky, David Yan Lap Wong
  • Patent number: 7669656
    Abstract: A method of using a survey system comprising at least one sensor. The method comprises operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a first resolution level while the sensor is a first distance relative to the Earth's surface and operating the survey system to provide information regarding the orientation of the sensor relative to the Earth at a second resolution level while the sensor is a second distance relative to the Earth's surface. The second distance is larger than the first distance. The second resolution level is higher than the first resolution level.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: March 2, 2010
    Assignee: GYRODATA, Incorporated
    Inventors: Eric Wright, James Frederick Brosnahan, Greg Allen Neubauer
  • Patent number: 7599797
    Abstract: A method and system for mitigating risk of well collision in a field includes receiving an anti-collision standard exemption request containing a description of risk of collision between a subject well and one or more offset wells, generating an assessment of the anti-collision standard exemption request using a stored multidimensional decision matrix, reviewing the assessment, and selectively updating the decision matrix based on the review.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: October 6, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Benny Poedjono, Tamara San Antonio
  • Publication number: 20090217539
    Abstract: A gyroscopically-oriented survey tool, includes a housing having an axis. Three accelerometers are mounted in the housing with their axes set orthogonally. A first of the axes is aligned to the axis of the housing. A second of the axes is perpendicular to the first A third of the axes is perpendicular to both of the first and the second. Three gyroscopes are mounted pseudo-orthogonally in the housing with their axes set at relative angles of other than 90 degrees. None of the axes of the gyroscopes are mounted parallel to the axes of the accelerometers. This configuration permits data from the accelerometers to be used to check the quality of data from the gyroscopes.
    Type: Application
    Filed: October 13, 2005
    Publication date: September 3, 2009
    Inventor: Erik Blake
  • Patent number: 7528946
    Abstract: A system for monitoring deflection of a downhole tool assembly. The system comprises a beam source directing a beam at a receptor positioned proximate the downhole tool assembly. The receptor detects the position of incidence of the beam at the receptor. A processor receives signals from the receptor and determines angular deflection of the downhole tool assembly based on incidence of the beam at the receptor. Information from other orientation sensors is also used to determine magnitude and direction of deflection. Deflection information is used by an operator or a control system to maintain or correct the course of the downhole tool assembly.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: May 5, 2009
    Assignee: The Charles Machine Works, Inc.
    Inventor: Floyd R. Gunsaulis
  • Publication number: 20080300791
    Abstract: Various systems and methods determine a distance, magnitude, and azimuthal angle describing the location of an anomaly within a geologic formation. For example, a method involves identifying an electrical characteristic (e.g., resistivity or conductivity) at each of several sensors in a measurement-while-drilling (MWD) tool. Based on the electrical characteristic, information identifying a formation property of the anomaly is generated. The information includes at least one magnitude and at least one distance. Information information identifying an azimuthal angle is also generated based upon the electrical characteristic. The azimuthal angle relates a position of the anomalous formation to a position of a first sensor in the MWD tool.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 4, 2008
    Inventors: Paul L. Sinclair, Thomas A. Springer
  • Patent number: 7386942
    Abstract: An apparatus for determining the orientation of a borehole at a point along the borehole, includes a tiltmeter for measuring the inclination of the borehole relative to the vertical, a vector magnetic sensor for measuring the amplitude of the component of the Earth's magnetic field along the axis of the borehole, and means for computing the orientation of the tubular sonde from the measurements of inclination and amplitude of the component of the Earth's magnetic field aligned with axis of the sonde.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: June 17, 2008
    Assignee: Scintrex Limited
    Inventor: Harold O. Seigel
  • Patent number: 7363717
    Abstract: A system and method for using a survey tool within a borehole is provided. The survey tool includes a plurality of rotation sensors each having a sensing axis and a direction of least acceleration sensitivity. The sensing axes of the plurality of rotation sensors are generally parallel to one another and the directions of least acceleration sensitivity of the plurality of rotation sensors are generally non-parallel to one another.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: April 29, 2008
    Assignee: Gyrodata, Incorporated
    Inventors: Roger Ekseth, Gary William Uttecht
  • Patent number: 7353613
    Abstract: A directional sensor system that incorporates a single axis sensor element that is manipulated to a plurality of orientations. The resulting responses of the sensor element at these locations are combined to obtain a measure of orientation of the system. The system applicable for determining orientation of instrumentation within a well borehole such as measurement-while-drilling, wireline and tubing conveyed borehole instrumentation. The system can be used in other subsurface and surface applications.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: April 8, 2008
    Assignee: Weatherford Canada Patnership
    Inventors: Roger P. Bartel, Jian-Qun Wu
  • Patent number: 7260477
    Abstract: A method for determining a borehole geometry parameter vector and/or lateral tool displacement vectors in a borehole is provided. The method includes acquiring at least one set of standoff measurements at a corresponding time. The method also includes processing a system of equations to determine the parameter vector and/or the lateral displacement vector(s). The system of equations may include variables representative of the parameter vector, the lateral tool displacement vector(s), and the standoff measurements. Exemplary embodiments of this invention advantageously enable the borehole parameter vector and/or the lateral displacement vector to be determined substantially contemporaneously.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: August 21, 2007
    Assignee: PathFinder Energy Services, Inc.
    Inventor: Samuel Mark Haugland