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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7413031 |
Apparatus and method for maintaining control of a drilling machine
An apparatus is provided for maintaining control of a machine which produces thrust, rotation or other outputs in response to input signals. The apparatus has two distinct parts, namely the...
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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...
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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...
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7334650 |
Apparatus and methods for drilling a wellbore using casing
Apparatus and methods for drilling with casing. In an embodiment, methods and apparatus for deflecting casing using a diverter apparatus are disclosed. In another embodiment, the apparatus...
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7306060 |
Drilling assembly with a steering device for coiled-tubing operations
The present invention provides a drilling assembly for drilling deviated wellbores. The drilling assembly includes a drill bit at the lower end of the drilling assembly. A drilling motor provides...
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7287605 |
Steerable drilling apparatus having a differential displacement side-force exerting mechanism
An apparatus for steerable rotary drilling of a borehole having a wall in the earth comprising a mandrel having a central opening there through for the passage of drilling fluids. The mandrel...
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7270198 |
Orienter for drilling tool assembly and method
The disclosed orienter for use in drilling a subterranean borehole enables use of the torque provided by the drilling motor to both orient the rotating drill bit for drilling an arcuate section of...
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7234543 |
Systems and methods for directionally drilling a borehole using a continuously variable transmission
Systems and methods for directionally drilling a borehole are provided. One system includes a biasing subsystem that is configured to control a tendency of a bottom hole assembly during drilling of...
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7182154 |
Directional borehole drilling system and method
A directional borehole drilling system employs a controllable drill bit, which includes one or more conical drilling surfaces. Instrumentation located near the bit measures present position when...
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7159672 |
Mapping tool for tracking and/or guiding an underground boring tool
A portable mapping tool for use in a horizontal drilling system and associated methods use a boring tool configured for transmitting a locating signal. The mapping tool also includes at least one...
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