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7472761 |
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 steering. The boring tool is advanced o...
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7468679 |
An apparatus for mud pulse telemetry for transmitting information from a drill string positioned at a down hole location in a bore hole to a surface location, the drill string having a flow passage through which a drilling fluid flows is...
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7467672 |
An orienting apparatus including at least one housing element configured to couple with a drill string; an actuator disposed inside the at least one housing element; a nozzle coupled to the actuator; a torque generator coupled to the act...
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7426967 |
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 accel...
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7422076 |
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, mov...
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7413032 |
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 drilli...
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7404454 |
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 ma...
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7403014 |
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 rela...
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7403013 |
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...
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7392858 |
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 fo...
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7386942 |
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 o...
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7377333 |
Aspects of this invention include a downhole tool having first and second members disposed to translate substantially linearly with respect to one another. A magnet is deployed on the first member and a plurality of magnetic field sensor...
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7373993 |
A system for monitoring the position and orientation of a downhole tool assembly having multiple beacons. In a preferred embodiment the first and second beacons are supported by the downhole tool assembly. Both beacons are adapted to tra...
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7353613 |
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 orientati...
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7350594 |
A system for determining the location of and communicating with a downhole tool assembly. A tracker assembly comprises a vertical transmitting antenna, a plurality of receiving antennas, and a processor. The downhole tool assembly has a ...
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7350590 |
The present generally relates to apparatus and methods for instrumentation associated with a downhole deployment valve or a separate instrumentation sub. In one aspect, a DDV in a casing string is closed in order to isolate an upper sect...
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7347280 |
Specific apparatus and associated methods are described for use in establishing the positions of locating field detectors and for path mapping within a region for the purpose of tracking and/or guiding the movement of an underground bori...
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7346455 |
A wellbore evaluation system evaluates mechanical wear and corrosion to components of a well system including a production tubing string positionable in a well and a sucker rod string movable within the production tubing string. A deviat...
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7345486 |
The present invention provides a locator/monitor capable of locating a boring tool and monitoring the progress of the tool for control purposes. The locator/monitor may be used in expedited locating methodology and straightforward calibr...
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7331409 |
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 transmi...
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7327144 |
Arrangements, apparatus and associated methods are described for use in a multi-frequency boring tool locating system. The boring tool includes a transmitter for transmitting a locating signal at two or more selectable frequencies. One s...
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7322416 |
A method of servicing a well bore comprises deploying into the well bore a zonal isolation device operable to self-set at a sensed location, and self-setting the zonal isolation device to hold at the sensed location without receiving com...
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7320372 |
The drill string is fitted for drilling activity in the formation expected, including a jet nozzle equipped drill head, and a near bit kick sub. The drill string is deflected to change the progressing well bore to a preferred direction. ...
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7306054 |
A method for determining a depth of a wellbore includes determining change in a suspended weight of a drill string from a first time to a second time. A change in axial position of the upper portion of the drill string is then determined...
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7306053 |
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 steering. The boring tool is advanced o...
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7298287 |
The invention is a system for transmitting data through downhole environments comprising a downhole network integrated into a downhole tool string. The downhole tool string comprises a plurality of downhole components. Each downhole comp...
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7287337 |
A pitch sensor tool for a stem boring or drilling machine, for example a sub-surface directional drilling machine having a stem and a drilling head. The pitch sensor tool includes a generally cylindrical housing adapted to be mechanicall...
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7270198 |
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 the borehole and rotating the orienter h...
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7267184 |
According to one embodiment of the invention, a rotary steerable tool includes a drive shaft configured to be coupled to a drill string at an upper end thereof and configured to be coupled to a drilling tool at a lower end thereof. A mid...
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7253628 |
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 rela...
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7243719 |
A method for determining a rate of change of longitudinal direction of a subterranean borehole is provided. The method includes positioning a downhole tool in a borehole, the tool including first and second surveying devices disposed the...
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7243440 |
A gauge for connecting with a power tool and providing a system for determining structural factors of a workpiece to be operated upon by the power tool is provided by the present invention. The gauge including a probe connected with a se...
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7237624 |
An assembly is configured for sensing its roll orientation, referenced to a roll indexing orientation that is defined by the assembly, so as to produce a roll output signal and for transmitting the roll output signal in a predetermined w...
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7234540 |
A two-axis gyroscope used on a bottom hole assembly can be used for determining a rate of rotation about the rotational axis of a BHA. The method takes advantage of possible misalignment of at least one axis of the two axis gyroscope fro...
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7234539 |
A method and apparatus are provided for determining an orientation of a drilling tool of a drilling system configured to drill a borehole into the Earth's surface. The method includes providing a survey system including at least one sens...
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7225885 |
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...
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7222681 |
A method for communicating with a downhole tool located in a subterranean borehole is disclosed. Exemplary embodiments of the method include encoding data and/or commands in a sequence of varying drill string rotation rates and drilling ...
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7219751 |
A steering head that comprises a forward pivot block and a rearward pivot block. The forward pivot block is attached to a leading edge of a casing. The rearward pivot block is attached to a trailing portion of the casing, the leading edg...
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7219749 |
Measurement of the location and direction of a drill head in a borehole extending beneath an obstacle such as a body of water utilizes a single AC solenoid at a known location but having an unknown orientation. The measurements are used ...
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7219748 |
A signaling apparatus comprises a magnet and a shield moveable relative to the magnet. The shield is moveable relative to the magnet between a first position in which the magnet is relatively exposed and a second position in which the ma...
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7219747 |
A method and apparatus for providing a local response to a local condition in an oil well are disclosed. A sensor is provided to detect a local condition in a drill string. A controllable element is provided to modulate energy in the dri...
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7218116 |
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...
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7212131 |
In order to control the sonde of an underground object, such as an underground boring tool, a predetermined sequence of rotation steps is applied to the object and that sequence is detected. The detection of the appropriate sequence caus...
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7201236 |
A portable area monitoring system for use with a horizontal directional drilling machine and adapted to produce a composite of the positions of a beacon and a fixed object. In a preferred embodiment the sensor assembly is supported by a ...
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7191850 |
A method of drilling a well includes calculating and estimating the dip angle, wherein said estimated dip angle being based on offset well data, seismic data, core data, pressure data. Next, the method includes drilling a well with a log...
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7182154 |
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 the bit is static, and dynamic toolface wh...
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7182151 |
An apparatus and method for horizontally drilling for detecting subsurface features and avoiding such features during closed-loop control of an underground drilling machine. A horizontal drilling system includes a base machine capable of...
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7180826 |
A device, method, and system for creating a pressure pulse from drilling fluid within a drill string in a down hole drill collar for enabling measurement-while drilling. The device and system are designed such that primarily laminar flow...
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7172038 |
The drilling system includes a work string supporting a bottom hole assembly. The work string including lengths of pipe having a non-metallic portion. The work string preferably includes a composite coiled tubing having a fluid impermeab...
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7165632 |
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 steering. The boring tool is advanced o...
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