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| Number | Title | Issue Date |
| 8113298 | Wireline communication system for deep wells A wireline apparatus for deep well measurements in a borehole being drilled includes a drill string having multiple drill pipe sections connected end-to-end, with at least one of the drill pipe sections being electrically conductive and isolated to provide an electr... | 02/14/2012 |
| 8061442 | Method to detect formation pore pressure from resistivity measurements ahead of the bit during drilling of a well Methods of using resistivity ahead of a drill bit measurements obtained while drilling a subterranean well using a drilling mud. Resistivity data ahead of the bit is gathered during drilling and prior to penetrating a region of interest of a known subterranean forma... | 11/22/2011 |
| 8011448 | Rotary steerable tool A rotary steerable tool (2) for use in a downhole drilling apparatus for adjusting the direction of drilling is disclosed. The tool comprises a tubular outer housing (20) and a row of steering pushers (24) slidably mounted to the housing for mov... | 09/06/2011 |
| 8011447 | Automated drill string position survey A method of surveying drill holes, typically for use in underground mining situations where the holes are bored using a top hammer drill rig (10), utilizes a survey tool located adjacent the drill bit (1) which is used to log position readings as the d... | 09/06/2011 |
| 7975778 | Borehole drilling control system, method and apparatus One embodiment includes an apparatus comprising a steerable well bore drilling tool having a main tool body. The steerable well bore drilling tool includes an inertial measurement unit to output a measurement used to determine an azimuthal deviation and inclination ... | 07/12/2011 |
| 7967083 | Sensor for determining a position of a jack element A drill string having a drill bit with a bit body located between a shank and a working face. The working face has at least one cutting element and a jack element disposed partially within the drill bit body and partially protruding from the working face. The jack e... | 06/28/2011 |
| 7950473 | Non-azimuthal and azimuthal formation evaluation measurement in a slowly rotating housing A steering tool configured for making azimuthal and non-azimuthal formation evaluation measurements is disclosed. In one embodiment a rotary steerable tool includes at least one formation evaluation sensor deployed in the steering tool housing. The steering tool may... | 05/31/2011 |
| 7931097 | Microwave linked laser control system, method, and apparatus for drilling and boring operations A laser control system and apparatus for guiding a drilling or boring operation during a trenchless technology implementation. In most if not all trenchless technology applications, direction of the pipe or utility structure through the earth is of utmost importance... | 04/26/2011 |
| 7926589 | Boring tool control using remote locator A drilling system performs underground boring using a drill rig and a boring tool which is configured for moving through the ground under control of the drill rig to form an underground bore. A monitoring arrangement, forming part of the system, includes a detection... | 04/19/2011 |
| 7878267 | Rotary directional drilling apparatus and method of use An apparatus for steering a drill string is disclosed herein, the apparatus comprising a drilling motor comprising a rotor, a stator, and at least one fluid passage for flowing drilling fluid to the stator. A blade is fixedly disposed on the exterior surface of the ... | 02/01/2011 |
| 7870912 | Centralizer-based survey and navigation device and method A Centralizer based Survey and Navigation (CSN) device designed to provide borehole or passageway position information. The CSN device can include one or more displacement sensors, centralizers, an odometry sensor, a borehole initialization system, and navigation al... | 01/18/2011 |
| 7849934 | Method and apparatus for collecting drill bit performance data Drill bits and methods for sampling sensor data associated with the state of a drill bit are disclosed. A drill bit for drilling a subterranean formation comprises a bit body and a shank. The shank further includes a central bore formed through an inside diameter of... | 12/14/2010 |
| 7814989 | System and method for performing a drilling operation in an oilfield The invention relates to a method for performing a drilling operation at a wellsite having a drilling rig configured to advance a drilling tool into a subsurface. The method steps include obtaining a well trajectory associated with a first volume, obtaining informat... | 10/19/2010 |
| 7814988 | System and method for determining the rotational alignment of drillstring elements A rotational alignment system determines the angular relationship between two or more elements of a drill string using one or more sensors that detect one or more reference objects positioned on the drill string. A control unit determines the rotational or angular o... | 10/19/2010 |
| 7802634 | Integrated quill position and toolface orientation display Method and apparatus for visibly demonstrating a relationship between toolface orientation and quill position by: (1) receiving electronic data on an on-going basis, wherein the electronic data includes quill position data and at least one of gravity-based toolface ... | 09/28/2010 |
| 7789171 | Device and method for measuring a property in a downhole apparatus A method and device for measuring a property, such as torque, includes a plurality of sensors, and a measuring device. The sensors attach to a downhole apparatus at a distance from one another. The sensors provide signals indicating their positions. A logic circuit ... | 09/07/2010 |
| 7757782 | Methods and apparatus for navigating a tool downhole Methods and apparatus for navigating a subterranean tool comprising a body member and a head member steerably associated with the body member. A determining unit is configured to determine a transversal target position of a nose of the head member relative to the bo... | 07/20/2010 |
| 7717194 | Borehole drilling control system, method and apparatus One embodiment includes an apparatus comprising a steerable well bore drilling tool having a main tool body. The steerable well bore drilling tool includes an inertial measurement unit to output a measurement used to determine an azimuthal deviation and inclination ... | 05/18/2010 |
| 7703548 | Magnetic ranging while drilling parallel wells Methods are disclosed for drilling a first well and a second well. The method includes measuring direction and inclination for at least one of the bottom hole assemblies (BHAs) in the wells, generating a magnetic field in at least one of the BHAs and measuring the m... | 04/27/2010 |
| 7686099 | Downhole positioning system Downhole positioning systems and associated methods are disclosed. In some embodiments, the system comprises a downhole source, an array of receivers, and a data hub. The downhole source transmits an electromagnetic positioning signal that is received by the array o... | 03/30/2010 |
| 7681663 | Methods and systems for determining angular orientation of a drill string Preferred methods and systems generate a control input based on a periodically-varying characteristic associated with the rotation of a drill string. The periodically varying characteristic can be correlated with the magnetic tool face and gravity tool face of a rot... | 03/23/2010 |
| 7669669 | Tool face sensor method Exhaust pressure from at least one actuator (34,36) which can tilt joint 6 of a bottom hole assembly 4 can be utilized to determine the direction 26 tiltable joint 6 is pointing (e.g., orientation, angular displacement, and/or incl... | 03/02/2010 |
| 7665543 | Permanent downhole deployment of optical sensors The present invention involves methods and apparatus for permanent downhole deployment of optical sensors. Specifically, optical sensors may be permanently deployed within a wellbore using a casing string. In one aspect, one or more optical sensors are disposed on, ... | 02/23/2010 |
| 7647987 | Multiple antenna system for horizontal directional drilling A system for monitoring the position of a downhole tool assembly having multiple beacons. In a preferred embodiment first and second beacons are adapted to transmit electromagnetic signals indicative of the position of the downhole tool assembly. A receiving assembl... | 01/19/2010 |
| 7624816 | Configurable beacon and method A monitoring system is used to monitor the location and orientation of a downhole tool assembly by detecting an output signal. The downhole tool assembly has a beacon assembly with one or more configurable operation parameters. A transmitting assembly transmits a mo... | 12/01/2009 |
| 7607494 | Earth penetrating apparatus and method employing radar imaging and rate sensing An earth penetrating apparatus includes a cutting tool and a sensor housing. A radar unit, rate sensor unit, processor, and transmitter are provided in the sensor housing. An antenna arrangement is coupled to the radar unit and configured for transmitting and receiv... | 10/27/2009 |
| 7584808 | Centralizer-based survey and navigation device and method A Centralizer based Survey and Navigation (CSN) device designed to provide borehole or passageway position information. The CSN device can include one or more displacement sensors, centralizers, an odometry sensor, a borehole initialization system, and navigation al... | 09/08/2009 |
| 7556105 | Closed loop drilling assembly with electronics outside a non-rotating sleeve A closed-loop drilling system utilizes a bottom hole assembly (“BHA”) having a steering assembly having a rotating member and a non-rotating sleeve disposed thereon. The non-rotating sleeve has a plurality of expandable force application members that engage a bo... | 07/07/2009 |
| 7540337 | Adaptive apparatus, system and method for communicating with a downhole device A system, apparatus and method for adaptive communication with a downhole device is disclosed. The instant invention proposes an adaptive system of communicating information from the surface of the earth to a device located downhole; thereby optimizing the drilling ... | 06/02/2009 |
| 7510027 | Borehole drilling control system, method and apparatus One embodiment includes an apparatus comprising a steerable well bore drilling tool having a main tool body. The steerable well bore drilling tool includes an inertial measurement unit to output a measurement used to determine an azimuthal deviation and inclination ... | 03/31/2009 |
| 7506696 | Borehole drilling control system, method and apparatus One embodiment includes an apparatus comprising a steerable well bore drilling tool having a main tool body. The steerable well bore drilling tool includes an inertial measurement unit to output a measurement used to determine an azimuthal deviation and inclination ... | 03/24/2009 |
| 7503403 | Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements A system for drilling a well comprises a tubular member having a bottomhole assembly at a bottom end thereof disposed in a wellbore. A first sensor is disposed in the bottomhole assembly at a predetermined axial location for detecting bending in a first axis and gen... | 03/17/2009 |
| 7475741 | Method and system for precise drilling guidance of twin wells A method to guide a drilling path of a second well in proximity to a first well including: applying a time-varying electrical current to a conductive casing or liner of the first well. From the drilling path of the second well, an electromagnetic field generated by ... | 01/13/2009 |
| 7426967 | Rotary steerable tool including drill string rotation measurement apparatus Aspects of this invention include a downhole tool (such as a steering tool) including first and second sensor sets for measuring substantially instantaneous drill string rotation rates. Each of the sensor sets includes at least one accelerometer disposed to measure ... | 09/23/2008 |
| 7422076 | Autoreaming systems and methods Methods and systems for controlling movement of a bit of a drilling assembly during reaming of an already-drilled hole; the methods, in certain aspects, including determining a ream speed for downward movement of the bit in the hole, moving the bit downward in a hol... | 09/09/2008 |
| 7413032 | Self-controlled directional drilling systems and methods System and method of controlling a trajectory of a wellbore comprises conveying a drilling assembly in the wellbore by a rotatable tubular member. The drilling assembly includes a drill bit at an end thereof that is rotatable by a drilling motor carried by the drill... | 08/19/2008 |
| 7404454 | Bit face orientation control in drilling operations A system for selectively orienting a bit at the end of a drillstring in a wellbore, the system, in certain aspects, having: motive apparatus for rotating a drillstring and a bit connected to an end of the drillstring; a control member manually movable to effect a ch... | 07/29/2008 |
| 7403014 | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal A boring tool is moved through the ground in a region which includes at least one electrically conductive in-ground line and which is subject to static magnetic fields including the magnetic field of the earth. Tracking a positional relationship between the boring t... | 07/22/2008 |
| 7403013 | Boring tool tracking/guiding system and method with unconstrained target location geometry Tracking a boring tool is performed within an underground region using a locating signal. The boring tool is moved through the ground during a series of distance movements such that potential movement of the boring tool during any one of the distance movements is le... | 07/22/2008 |
| 7392858 | Remote control for a drilling machine A method and apparatus for remotely controlling a machine. A remote operator controls a tracking device including a signal system for selectively emitting a remote enable signal. The remote enable signal is relayed to a control system for the machine. The control sy... | 07/01/2008 |
