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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...
7584788 Control method for downhole steering tool  
A method for determining a rate of change of longitudinal direction of a subterranean borehole includes positioning a downhole tool in a borehole, the tool including first and second longitudinally...
7528946 System for detecting deflection of a boring tool  
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...
7510025 Boring machine  
A micro tunnelling machine has a tunnelling head with a boring bit which is forced in a horizontal direction by a hydraulic thruster. The direction of the head is laser guided. The beam strikes a...
7500530 Control system  
A control system for controlling at least one function of an item of construction equipment. The control system includes a pump, a proportional control valve, a directional control valve, a signal...
7472761 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...
7464770 Closed-loop control of hydraulic pressure in a downhole steering tool  
Aspects of this invention include a steering tool having a controller configured to provide closed-loop control of hydraulic fluid pressure. In one exemplary embodiment, closed-loop control of a...
7461707 Electric horizontal directional drilling machine system  
An electric horizontal directional drilling machine. An electric horizontal directional drilling machine is powered by an electric power assembly. The power assembly is made up of a fuel cell and...
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...
Matches 1 - 50 out of 164 1 2 3 4 >