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9043152 Realtime dogleg severity prediction  
A method for estimating an inclination and azimuth at a bottom of a borehole includes forming a last survey point including a last inclination and a last azimuth; receiving at a computing device...
9022141 Directional drilling attitude hold controller  
An attitude hold controller method includes receiving at a navigable apparatus a demand inclination and a demand azimuth with respect to a global coordinate system and determining at the navigable...
9010461 Guide wire for ranging and subsurface broadcast telemetry  
A managed bulk drilling system that employs a guide wire for ranging and crosswell telemetry. Some system embodiments include multiple drilling assemblies operating in the vicinity of a reference...
9008919 Swing control apparatus and method of construction machinery  
A swing control apparatus and a swing control method for a construction machine are provided. The swing control apparatus includes a start position estimation unit, a stop target position...
9007231 Synchronization of distributed measurements in a borehole  
A system and method to synchronize distributed measurements in a borehole are described. The system includes a plurality of wired segments coupled together by couplers and a plurality of nodes...
9000940 Drill string inground isolator in an MWD system and associated method  
An inground isolator and associated method can provide an electrically isolated break in a drill string using electrical insulating members/isolators that are supported by a housing. During drill...
9000941 Alternating frequency time domain approach to calculate the forced response of drill strings  
A method for estimating a steady state response of a drill string in a borehole includes calculating a first displacement of the drill string in a frequency domain for a first excitation force...
8997890 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...
8991519 Proximity detection system for deep wells  
A method and apparatus for magnetic field measurements to determine the proximity of a nearby target incorporating electrically conductive material includes a drill string (54) having multiple...
8978782 System, apparatus, and method of conducting measurements of a borehole  
A bias unit having a support body in use to be integrated with a drilling assembly and rotatable therewith for drilling a borehole penetrating a geological formation. A pad is pivotally connected...
8983782 Magnetic beacon guidance system  
A method of guiding a probe (20) to a target includes placing a magnetic field generator at the target and guiding the probe (20) to a region of the target. The probe carries a survey sensor pack...
8977501 System and method for formation detection and evaluation  
Provided are a system and method for identifying planned markers while drilling a borehole. In one example, the method includes obtaining a plan containing planned markers that each corresponds to...
8960326 Formation dip geo-steering method  
A geo-steering method for drilling a formation penetrated by multiple wells. The method comprises computing a stratigraphic target formation window, computing a target line utilizing an...
8955586 Beacon assembly  
An electronic transmitter assembly used in directional boring, the housing of the assembly being configured for receiving a beacon. The housing and cover of the assembly are configured to provide...
8953412 Method and assembly for determining landing of logging tools in a wellbore  
An assembly using an onboard controller employs sensors to precisely determine the landing status of downhole logging tools. A control algorithm of the onboard controller can enable an intelligent...
8952700 Method for minimizing delays while drilling using a magnetic ranging apparatus  
A method and system is provided for minimizing delays in a magnetic ranging method. Delays are minimized by establishing synchronicity between triggering of a three-axis magnetometer and...
8947094 At-bit magnetic ranging and surveying  
A bottom hole assembly configured for a subterranean drilling operation having a drill bit; a downhole tool deployed above the drill bit, at least a portion of the downhole tool free to rotate...
8939236 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools  
A status indicator for determining a position of an extendable member in an expandable apparatus. The status indicator is configured to decrease a cross-sectional area of a portion of a fluid path...
8931580 Method for using dynamic target region for well path/drill center optimization  
Method for determining one or more optimal well trajectories and a drill center location for hydrocarbon production. A well path and drill center optimization problem (55) is solved in which one...
8922215 Measurement of formation parameters using rotating directional EM antenna  
A logging tool and method to make subsurface measurements is disclosed, wherein the tool is placed within a borehole penetrating a formation. The tool has a transmitter antenna and a receiver...
8917094 Method and apparatus for detecting deep conductive pipe  
Downhole tools and techniques acquire information regarding nearby conductors such as pipes, well casing, and conductive formations. At least some method embodiments provide a current flow along a...
8902703 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...
8893821 Apparatus and method for tool face control using pressure data  
A method, apparatus and computer-readable medium for drilling a wellbore is disclosed. A fluid is pumped to rotate a drilling assembly at an end of a drill string in the wellbore. A plurality of...
8875806 Formation dip geo-steering method  
A method of drilling a subterranean well from a surface location. The method comprises estimating a target formation depth, estimating a target formation dip angle and calculating a target line...
8863860 System and method of improved depth of cut control of drilling tools  
A method of configuring a depth of cut controller (DOCC) of a drill bit comprises determining a desired minimum depth of cut for a radial swath of the drill bit. The method additionally comprises...
8857510 System and method for determining movement of a drilling component in a wellbore  
A system and a method determine movement of a drilling component, such as, for example, a tool, a drill bit or other wellbore device, within a wellbore. The system and method may process...
8857538 Method for drilling a borehole  
In a method for drilling a borehole real time geosteering data, including natural gamma ray data is obtained for a plurality of borehole positions for drilling a borehole along a projected...
8862405 System and method for producing look-ahead profile measurements in a drilling operation  
A method and system for producing look-ahead profiles measurements includes positioning an energy transmitter, such as a transmitting antenna, proximate to a borehole assembly tool. One or more...
8844648 System and method for EM ranging in oil-based mud  
Nearby conductors such as pipes, well casing, etc., are detectable from within a borehole filled with an oil-based fluid. At least some method embodiments provide a current flow between...
8839858 Drilling wells in compartmentalized reservoirs  
Method of drilling a well, including one method comprising determining a first value indicative of a relative position of a geological bed boundary with respect to a drilling assembly, determining...
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...
8827005 Method for drilling wells in close relationship using magnetic ranging while drilling  
Methods for drilling wells using magnetic ranging while drilling to position the wells with respect to one another are provided. In accordance with one embodiment, a method of drilling a well...
8818729 System and method for formation detection and evaluation  
Provided are a system and method for identifying planned markers while drilling a borehole. In one example, the method includes obtaining a plan containing planned markers that each corresponds to...
8803527 Use of electrodes and multi-frequency focusing to correct eccentricity and misalignment effects on transversal induction measurements  
A multicomponent induction logging tool uses a nonconducting mandrel. A central conducting member including wires that electrically connect at least one of the antennas to another of the antennas....
8800684 Method and apparatus for borehole positioning  
A method of drilling boreholes is provided. The method, according to one embodiment, may include drilling a borehole, transmitting a signal into the earth formation, receiving signals at least...
8794353 System and method for surface steerable drilling  
A system and method for surface steerable drilling are provided. In one example, the method includes monitoring operating parameters for drilling rig equipment and bottom hole assembly (BHA)...
8791701 Electromagnetic proximity detection method and unit  
Electromagnetic proximity detection method for a buried structure executed with a mobile detection device, including sensing an electromagnetic field emitted from the structure as an analog...
8786285 Apparatus for monitoring a positional relationship between a boring tool and an inground line  
An apparatus monitors a positional relationship between a boring tool and an inground line and includes a transmitter to generate a magnetic locating field from one of either the boring tool or at...
8775085 Distributed sensors for dynamics modeling  
An apparatus for estimating at least one of a dynamic motion of a portion of interest of a drill string and a static parameter associated with the portion of interest, the apparatus having: a...
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...
8754648 Boring tool locating signal frequency tracking apparatus  
A transmitter transmits a locating signal from a boring tool by operating at a frequency that is selected as one of at least two operating frequencies for use in locating the boring tool. A...
8739900 System and method for coupling a drill bit to a whipstock  
A system and method facilitate drilling of a lateral wellbore by eliminating one or more trips downhole. The system comprises a drill bit optimized for the drilling operation. The drill bit is...
8708064 System and method to control steering and additional functionality in a rotary steerable system  
A system and methodology provide control over the directional drilling of a wellbore while enabling additional functionality. A rotational valve is mounted within a drill collar of a rotary...
8700272 System and method for detecting a crest  
A system for automated control of a machine having a ground engaging work implement includes an implement load sensor system. A controller determines a change in terrain based at least in part...
8689868 Tractor communication/control and select fire perforating switch simulations  
Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release...
8684107 System and method for densely packing wells using magnetic ranging while drilling  
Systems and methods for drilling a plurality of densely packed wells to efficiently utilize available drilling space. In accordance with one embodiment, a method of drilling densely packed wells...
8678097 System and method for circumferentially aligning a downhole latch subsystem  
A system for circumferentially aligning a downhole latch subsystem in a wellbore. The system includes an outer tool assembly including a latch coupling having a latch profile and a slot...
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...
8672056 System and method for controlling steering in a rotary steerable system  
A system and methodology provide control over the directional drilling of a wellbore. A rotational valve is mounted within a drill collar of a rotary steerable system to enable selective actuation...
8668030 Establishing positions of locating field detectors and path mapping in underground boring tool applications  
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...