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8893822 Apparatus and methods for real time communication between drill bit and drilling assembly  
An apparatus and method of performing a wellbore operation. The apparatus includes a drill bit that has a cavity at an end thereof and a communication device placed in the cavity. The communication...
8875807 Optical power for self-propelled mineral mole  
Exemplary methods, systems and components disclosed herein provide propagation of light signals from an external source to a borehole mining mole which includes an optical/electric transducer...
8843220 Position and velocity measurement tool for standard and directional drilling  
A position and velocity measuring tool for use on a top drive of a drilling rig having a variable frequency drive connected to an electric motor and power supply. The position and velocity...
8798384 Dynamic image compression for imaging while drilling applications  
A dynamic data compression system for forming and transmitting data from a downhole location within a borehole penetrating the earth to a surface location includes a data source that forms raw data...
8776915 Locking clutch for downhole motor  
A locking clutch to selectively transmit torque from a stator of a downhole tool to a rotor of the downhole tool includes at least one locking pawl radially between the rotor and the stator and...
RE44973 Drilling method and apparatus  
A method and apparatus for precisely controlling the rotation of a drill string. A sensor monitors the rotation of the drill string and transmits the rotational information to a computer. The...
RE44956 Drilling method and apparatus  
A method and apparatus for precisely controlling the rotation of a drill string. A sensor monitors the rotation of the drill string and transmits the rotational information to a computer. The...
8752647 Mud motor  
This application is directed to a pressure balanced mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a passageway disposed in the passageway...
8689906 Methods and apparatus for reducing stick-slip  
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...
8672055 Automated directional drilling apparatus and methods  
Methods and systems for drilling to a target location include a control system that receives an input comprising a planned drilling path to a target location and determines a projected location of...
8640793 Dynamic steering tool  
A dynamic steering tool for use with a horizontal directional drilling machine. The tool comprises and inner member, an outer member, a steering member, a drill stem, and a drill bit. The drill...
8622150 Boring tool tracking fundamentally based on drill string length, pitch and roll  
A boring tool moves having a pitch orientation, a yaw orientation and a roll orientation and is steerable underground using the roll orientation. A maximum drill string curvature is established for...
8602126 Directional drilling control apparatus and methods  
Apparatus and methods to steer a hydraulic motor when elongating a wellbore having a non-vertical component that includes a quill adapted to transfer torque, rotation, or position between a drive...
8596385 System and method for determining incremental progression between survey points while drilling  
A system and method for surface steerable drilling are provided. In one example, the system receives toolface information for a bottom hole assembly (BHA) and non-survey sensor information...
8590635 Method and apparatus for automated drilling of a borehole in a subsurface formation  
A method for automated drilling of a borehole in a subsurface formation includes drilling the borehole using a set of drilling control variables assigned a set of values. An automated drilling...
8579044 Bending of a shaft of a steerable borehole drilling tool  
In certain embodiments, a steerable drilling tool is provided including a rotatable shaft extending through a housing where the shaft and the housing are separated by at least one bearing or two...
8561720 Methods and systems for drilling  
A method of steering a drill bit to form an opening in a subsurface formation, comprises a) determining a distance from design of a well, and b) determining an angle offset from design of the well...
8485277 Bottom-hole assembly, and a method and system for transmitting data from a bottom-hole assembly  
A bottom-hole assembly (202), BHA, for drilling a borehole (204, 301) in an earth formation (208, 300), comprising a percussion drill bit (208), a percussion mechanism adapted to strike the drill...
8464808 Method and device for controlling a rock drill rig  
A method and a device for controlling a drill rig (1) which includes a carrier vehicle with at least one feed-beam (3), wherein a drill machine (2) is movable to-and-fro, wherein rig parameters are...
8434567 Borehole drilling apparatus, systems, and methods  
Apparatus, systems, and methods may operate to couple a tubular member to a bottom hole assembly, dispose at least one adjustable stabilizing member on the tubular member, and control at least one...
8387720 Drilling rig with a control system for rotationally rocking a drill string with a top drive  
A drilling rig for automatically executing rocking of a drill string with a moveable top drive using a control system having a processor and data storage connected to a torque pin sensor, a speed...
8381836 Advanced underground homing system, apparatus and method  
A boring tool that is moved by a drill string to form an underground bore. A transmitter transmits a time varying dipole field as a homing field from the boring tool. A pitch sensor detects a pitch...
8362634 Modular power source for transmitter on boring machine  
A modular power source includes an outer housing, a generator module, and a control module. The generator module and the control module are electrically interconnected and are positioned to lie...
8360171 Directional drilling control apparatus and methods  
Methods and apparatus for using a quill to steer a hydraulic motor when elongating a wellbore in a direction having a horizontal component, wherein the quill and the hydraulic motor are coupled to...
8342262 Boring tool tracking fundamentally based on drill string length, pitch and roll  
A boring tool moves having a pitch orientation, a yaw orientation and a roll orientation and is steerable underground using the roll orientation. A maximum drill string curvature is established for...
8336642 Drilling system  
A drilling system for drilling a borehole in an underground formation, comprises a rotary drill bit, a drilling drive mechanism that is capable of applying both rotating the drill bit and applying...
8305229 System for wireless communication along a drill string  
A wireless communication and drill string telemetry system. The communication system is used for communicating information along a drill string between a boring tool and a boring machine. An...
8210283 System and method for surface steerable drilling  
A system and method for surface steerable drilling are provided. In one example, the system receives feedback information from a drilling rig and calculates an estimated position of a drill bit in...
8157023 Boring tool tracking fundamentally based on drill string length, pitch and roll  
A boring tool moves having a pitch orientation, a yaw orientation and a roll orientation and is steerable underground using the roll orientation. A maximum drill string curvature is established for...
8151907 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations  
A method for forming a subsurface wellbore is disclosed. The method includes operating a drilling string in a first direction of rotation. A first motor located near the end of the drilling string...
8146679 Valve-controlled downhole motor  
The present invention relates to systems and methods for controlling downhole motors. One aspect of the invention provides a valve-controlled downhole motor including: a downhole motor and a spool...
8136612 Constant-mode auto-drill with pressure derivative control  
Some embodiments of the invention concern HDD in an automatic drilling mode. Such embodiments can include maintaining a constant output parameter while performing a drilling operation using an HDD...
8136609 Multiple input scaling autodriller  
A wellbore drilling system includes a weight on bit controller configured to generate a normalized weight on bit output, a drilling torque controller configured to generate a normalized toque on...
8061441 Autonomous excavating apparatus  
Disclosed is a novel autonomous excavating apparatus capable of solving conventional problems. The autonomous excavating apparatus comprises an apparatus body including a lower body 101 formed in a...
8042623 Distributed sensors-controller for active vibration damping from surface  
An apparatus for controlling a vibration of a drill string, the apparatus including: a plurality of sensors in operable communication with the drill string; and a controller in operable...
7931096 Adaptive user interface for rock drilling rig  
A control apparatus for controlling a multi-phase rock drilling event carried out with a rock drilling rig. In a display of the rock drilling rig or a control unit thereof, a first section is...
7921938 Command and control for boring system  
A system having a number of land units [100, 4000, 5000] is disclosed which operates to efficiently find and create boreholes [5] to one or more underground targets [1]. Each of the land units...
7884736 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems  
A system and method of interfacing a drilling machine with one of a number of different walk-over guidance systems involves receiving an ID signal from a particular walk-over guidance system...
7866416 Clutch for a jack element  
A downhole tool string, comprising a tool string bore and a drill bit located at the bottom of the tool string. The drill bit comprises a body intermediate a shank and a working surface. The...
7828083 Method of controlling operation of rock drilling rig, and rock drilling rig  
A method of controlling operation of a rock drilling rig, and a rock drilling rig. A rate of flow of a flushing medium of the rock drilling rig is determined, and the operation of the rock drilling...
7823655 Directional drilling control  
Methods and apparatus for using a quill to steer a hydraulic motor when elongating a wellbore in a direction having a horizontal component, wherein the quill and the hydraulic motor are coupled to...
7775301 Advanced steering tool system, method and apparatus  
A steering tool is movable by a drill string to form an underground bore along an intended path. A sensing arrangement of the steering tool detects its pitch and yaw orientations at a series of...
7775297 Multiple input scaling autodriller  
A wellbore drilling system is disclosed herein, in which the system includes a weight on bit controller configured to generate a normalized weight on bit output, a drilling torque controller...
7766098 Directional drilling control using modulated bit rotation  
A system for steering the direction of a borehole advanced by cutting action of a rotary drill bit by periodically varying the rotation speed of the drill bit. The steering system comprises a motor...
7757781 Downhole motor assembly and method for torque regulation  
A downhole motor assembly for driving a drill bit. The assembly includes a hydraulic drive section with a stator and a rotor located inside the stator to form a flow path between the stator and the...
7743848 Boring tool tracking fundamentally based on drill string length, pitch, and roll  
A boring tool moves having a pitch orientation, a yaw orientation and a roll orientation and is steerable underground using the roll orientation. A maximum drill string curvature is established for...
7737863 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems  
A system and method of interfacing a drilling machine with one of a number of different walk-over guidance systems involves receiving an ID signal from a particular walk-over guidance system...
7725263 Gravity azimuth measurement at a non-rotating housing  
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...
7651170 Bore head for microbore operation  
Boring apparatus for drilling laser guided microbore tunnels uses a liquid stream to remove soil as slurry and an airstream to conduct the slurry away from the bore head. The cylindrical head...
7623961 Method for determining a track of a geographical trajectory  
A method for determining a track of a geographical trajectory which has predetermined start and locations. A data collection device, which has onboard synchronized sensors, is moved between the...
Matches 1 - 50 out of 172 1 2 3 4 >