Matches 1 - 50 out of 74 1 2 >


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US20060225922 Vibrational heads and assemblies and uses thereof  
A vibrational head for vibrational drilling utilising a tunable hydraulic supply to each end of a shuttle in a housing from which the vibrational output is taken. Valving is by a rotary valve...
US20110031020 WELLBORE PERCUSSION ADAPTER AND TUBULAR CONNECTION  
A percussion adapter that is driven to generate a percussive axial motion on a wellbore structure. One percussion adapter includes a drive connection to mechanically convert rotational drive to...
US20140305706 DRILLING TOOL FOR LAYING A TUBE IN THE GROUND  
A drilling tool for laying a tube (3) around a buried elongated element (1), comprising a drilling head (2) guided by the buried element (1), moving under the action of a pressurized fluid, from a...
US20120222901 Synthetic Formation Evaluation Logs Based on Drilling Vibrations  
A method and apparatus for predicting a formation parameter at a drill bit drilling a formation is disclosed. A vibration measurement is obtained at each of a plurality of depths in the borehole....
US20110147084 METHOD AND AN ARRANGEMENT FOR CONTROLLING A ROCK DRILL  
An arrangement and a method for controlling at least one drill parameter when drilling in rock with a rock drill, comprising an impulse-generating device arranged to induce shock waves in a tool...
US20080314640 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods  
Disclosed are hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods. In one embodiment, a hydrocarbon...
US20120037424 VIBRATORY DRILLING APPARATUS  
A vibratory unit interposed between a planetary drive and earth-penetrating device, e.g., an auger, is powered by the hydraulic system of a tractor, skid loader or the like. The unit includes a...
US20080149392 Damping Device For an Output Shaft in a Gearbox  
The invention relates to a damping device for an output shaft (26) in a gearbox (14,16), where the gearbox (14,16) is arranged for rotation of a rotational degree of freedom (Z4,Z5) in a...
US20110011644 METHODS AND APPARATUS FOR ATTENUATING DRILLSTRING VIBRATIONS  
Apparatus and methods are described for highly attenuating vibrations of a drillstring assembly while drilling. In one embodiment, vibrations are attenuated by introducing one or more vibration...
US20090214299 METHOD AND SYSTEM FOR INSTALLING GEOTHERMAL HEAT EXCHANGERS, MICROPILES, AND ANCHORS USING A SONIC DRILL AND A REMOVABLE OR RETRIEVABLE DRILL BIT  
There is provided a method for drilling a cased hole and installing a micropile. A sonic drilling apparatus is positioned at a desired location. The sonic drilling apparatus includes a rotating...
US20090038848 PEIZOELECTRIC GENERATOR PARTICULARLY FOR USE WITH WELLBORE DRILLING EQUIPMENT  
An electric power generator includes a conduit disposed in a wellbore penetrating subsurface formations and at least one piezoelectric transducer in contact with the conduit. The piezoelectric...
US20080135294 Vibrational Apparatus  
Vibrational apparatus capable of providing a vibrational output, said apparatus comprising or including an assembly having a shuttle capable of shuttling between complementary structures, at least...
US20140158428 Drill String Oscillation Methods  
A method includes oscillating, with a first acceleration profile, at least a portion of a drill string using a top drive at least indirectly coupled to the drill string and includes oscillating,...
US20050217898 Vibration-dampening drill collar  
A drill collar primarily for use with measurement-while-drilling and logging-while-drilling sensors, the drill collar composed of a non-magnetic nickel alloy, and having three or four elongate...
US20060006002 Working tool for machining mineral constructional components  
A working tool for machining mineral constructional components, in particular, for machining mineral constructional components, mineral foundations, and the like with an ultrasonic tool, has a...
US20150218893 STABILIZER ASSEMBLY FOR WIRED DRILL PIPE COUPLING  
A downhole sub having a first tubular housing with a first internal shoulder, a second tubular housing with a second internal shoulder, and a stabilizer assembly to be disposed between the first...
US20080083565 Method of geothermal loop installation  
There is provided a method for drilling a hole into the ground and installing a geothermal transfer loop. A drilling apparatus is positioned at a desired location. The drilling apparatus includes...
US20130292179 DRIVE DEVICE AND METHOD FOR DRIVING A DRILL ROD  
The invention relates to a drive device for driving a drill rod, which has an outer rod and an inner rod, with a first rotary drive unit, with which the outer rod can be driven in a rotating...
US20100307828 SYSTEMS AND METHODS FOR CANCELING NOISE AND/OR ECHOES IN BOREHOLE COMMUNICATION  
Systems and methods cancel or compensate for an echo or noise in borehole communication. The systems and methods provide a downhole tool configured to provide borehole communication via mud pulse...
US20070289778 Active vibration control for subterranean drilling operations  
An active vibration control device improves drilling by actively applying a dampening profile and/or a controlled vibration to a drill string and/or bottomhole assembly (BHA). Embodiments of the...
US20140151122 MITIGATION OF ROTATIONAL VIBRATION USING A TORSIONAL TUNED MASS DAMPER  
An apparatus for reducing vibration includes: a damping assembly configured to be fixedly attached to a downhole component, the downhole component configured to rotate within a borehole in an...
US20150114716 VIBRATION TOOL  
Various implementations described herein are directed to a vibration tool, e.g., for use in drilling or other downhole operations. In one implementation, the vibration tool may include a housing...
US20120228028 Apparatus And Method For Damping Vibration In A Drill String  
An apparatus and method for damping vibration, especially torsional vibration due to stick-slip, in a drill string, Sensors measure the instantaneous angular velocity of the drill string at one or...
US20090101412 DRILL-STRING SHOCK ABSORBERS  
Implementations of the present invention relate generally to methods, systems, and apparatus for absorbing vibration and shock impulses created during drilling operations. In particular,...
US20090095531 SYSTEMS AND METHODS FOR REDUCING BACKWARD WHIRLING WHILE DRILLING  
According to the invention, a system for drilling a cavity in a medium is disclosed. The system may include a bottom hole assembly. The bottom hole assembly may include a first longitudinal...
US20140083775 ROTARY IMPACT DRILL AND DOUBLE-LAYER DRILLING ROD MECHANISM  
A rotary drill and a double-layer drilling rod mechanism are disclosed. The rotary drill comprises a vibration excitation mechanism (1), a rotating mechanism (3) and a flushing mechanism (10). The...
US20080066965 Methods and apparatus for attenuating drillstring vibrations  
Apparatus and methods are described for highly attenuating vibrations of a drillstring assembly while drilling. In one embodiment, vibrations are attenuated by introducing one or more vibration...
US20130199848 METHOD AND APPARATUS FOR CREATING A PRESSURE PULSE IN DRILLING FLUID TO VIBRATE A DRILL STRING  
A pressure pulse generating method and apparatus for use with a drill string includes a top and bottom subs for attaching the apparatus within the drill string; a rotor/stator; a drive assembly;...
US20100139977 Active Vibration Control for Subterranean Drilling Operations  
An active vibration control device improves drilling by actively applying a dampening profile and/or a controlled vibration to a drill string and/or bottomhole assembly (BHA). Embodiments of the...
US20080060849 Shape memory alloy vibration isolation device  
Methods and apparatus for mitigating the effects of vibration of various tools, such as those used downhole, by utilizing a vibration isolation device that incorporates Shape Memory Alloys (SMAs)....
US20140374162 SONIC DRILL HEAD  
A sonic drill head comprising an outer housing, an isolation system, a sine generator and a spindle. The sine generator generates a linear sinusoidal vibration force through the rotation of a...
US20120255782 SONIC DRILL HEAD  
A sonic drill head comprising an outer housing, an isolation system, a sine generator and a spindle. The sine generator generates a linear sinusoidal vibration force through the rotation of a...
US20140360782 SYSTEM AND METHOD FOR STEERING IN A DOWNHOLE ENVIRONMENT USING VIBRATION MODULATION  
A system is provided for communicating within a borehole using controlled vibrations. A movement mechanism uses mechanical energy provided by a mechanical energy source to enable translational...
US20150034387 DOWNHOLE SHOCK ASSEMBLY AND METHOD OF USING SAME  
A shock assembly for use with a motion tool deployable into a wellbore by a conveyance. The motion tool includes a mandrel operatively connectable to the conveyance or the motion tool, a housing...
US20150259989 METHODS AND APPARATUS FOR MITIGATING DOWNHOLE TORSIONAL VIBRATION  
A well tool apparatus for damping torsional vibration of a drill string comprises stabilizing members projecting radially outwards from a housing that is, in operation, rotationally integrated in...
US20130186686 Method and Apparatus for Vibrating Horizontal Drill String to Improve Weight Transfer  
An apparatus for use in a horizontal section of a drill string is disclosed. The apparatus includes a motor that is connected to the horizontal section of the drill string. The motor is adapted to...
US20140151125 DRILL BIT HOUSING VIBRATOR AND METHOD  
A vibration system for drill bit housing and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore through which drilling fluid is pumped. In one...
US20120241219 RESONANCE ENHANCED ROTARY DRILLING  
A method for controlling a resonance enhanced rotary drill comprising a rotary drill bit and an oscillator for applying axial oscillatory loading to the rotary drill bit, the method comprising:...
US20130092441 Steering Head with Integrated Drilling Dynamics Control  
A method, apparatus and computer-readable medium for reducing a vibration of a drill string in a borehole. A sensor of the drill string obtains one or more measurements of a parameter of the...
US20100065330 DOWN HOLE MULTIPLE PISTON TOOLS OPERATED BY PULSE GENERATION TOOLS AND METHODS FOR DRILLING  
An underground drilling method where drilling fluid pulsing down hole tool is combined with a multiple in series pistons down hole tool to provide vigorous vibrations in the drill string and...
US20100181111 Downhole Vibration Dampener  
A down hole vibration dampener is disclosed that uses a set of polyurethane rings and steel support rings to create a shock absorber within the drill string to reduce the amount of vibration in...
US20110036630 VIBRATORY DRILLING MACHINE  
A vibratory milling machine has a vibratory housing confined to substantially linear reciprocating motion relative to a base, causing a tool carried by the housing to impact a mineral formation or...
US20140353035 Drilling Apparatus for Reducing Borehole Oscillation  
A downhole drilling apparatus includes a drill bit, a steering tool, and an anti-oscillation sleeve deployed about a downhole end of the steering tool. The anti-oscillation sleeve is undergauge...
US20110100713 METHOD AND SYSTEM FOR INSTALLING GEOTHERMAL TRANSFER APPARATUSES WITH A SONIC DRILL AND A REMOVABLE OR RETRIEVABLE DRILL BIT  
There is provided a method for drilling a cased hole and installing a geothermal transfer apparatus. A sonic drilling apparatus is positioned at a desired location. The sonic drilling apparatus...
US20100282514 Vibrational apparatus  
Vibrational apparatus capable of providing a vibrational output, said apparatus comprising or including an assembly having a shuttle capable of shuttling between complementary structures, at least...
US20110056750 AUTOMATIC CONTROL OF OSCILLATORY PENETRATION APPARATUS  
A system and method for controlling an oscillatory penetration apparatus. An embodiment is a system and method for controlling a sonic drill having a displacement and an operating range and...
US20140246234 DRILLING APPARATUS AND METHOD  
A drilling apparatus including a drill bit and a nutation device. The drilling apparatus is configured to enable the drill bit to be rotated at a rotation frequency while the nutation device...
US20120048621 METHOD AND APPARATUS FOR APPLYING VIBRATIONS DURING BOREHOLE OPERATIONS  
A method of conducting borehole operations using a system including an elongate tubular conveyance that is moved through the borehole, the method comprising imposing a torsional vibration at a...
US20120222900 VIBRATION DETECTION IN A DRILL STRING BASED ON MULTI-POSITIONED SENSORS  
In some example embodiments, a system includes a drill string having a drill bit. The drill string extends through at least part of a well bore. The system also includes a first vibrational...
US20120097453 Downhole Mechanism  
In one aspect of the invention, a downhole tool string component comprises a fluid passageway formed between a first and second end. A valve mechanism is disposed within the fluid passageway...

Matches 1 - 50 out of 74 1 2 >