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| Number | Title | Issue Date |
| 8181719 | Flow pulsing device for a drilling motor A downhole flow pulsing device comprises a housing connected in series with a drill string and a valve with a rotating portion in the housing arranged to vary an area of a flow passage through the housing. A fluid actuated positive displacement motor drives rotation... | 05/22/2012 |
| 8162078 | Vibrating downhole tool Disclosed is an apparatus for vibrating a downhole drill string operable to have a drilling fluid pumped therethrough. The apparatus comprises a tubular body securable to the drill string and having a central bore therethrough, a valve in the tubular body for ventin... | 04/24/2012 |
| 8136611 | Method and system for installing micropiles with a sonic drill Disclosed is 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 and vibrating apparatus for rotating and vibrating a drill string into the gr... | 03/20/2012 |
| 8132631 | 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 a rotating and vibrating apparatus, such as a sonic drill, for rotatin... | 03/13/2012 |
| 8118115 | 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 and vibrating apparatus for rotating and vibrating a drill string into t... | 02/21/2012 |
| 8074740 | Method and system for installing cast-in-place concrete piles 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 includes a rotating and vibrating apparatus for rotating and vibrating a... | 12/13/2011 |
| 7984771 | 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 attenuation modules at appropriate assembly locations. For example, vibr... | 07/26/2011 |
| 7891440 | 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 includes a rotating and vibrating apparatus for rotating and vibrating a... | 02/22/2011 |
| 7874379 | 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 rock-drilling rig (2), and thus for... | 01/25/2011 |
| 7828082 | 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 attenuation modules at appropriate assembly locations. For example, vibr... | 11/09/2010 |
| 7779932 | 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, implementations of the present invention include drill-string shock absorbers a... | 08/24/2010 |
| 7762354 | 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 transducer is configured to undergo stress in response to vibration in th... | 07/27/2010 |
| 7757783 | Vibrational apparatus Vibrational apparatus capable of providing a vibrational output. The apparatus includes an assembly having a shuttle capable of shuttling between complementary structures, at least one of which complementary structures provides the vibrational output. The arrangemen... | 07/20/2010 |
| 7748474 | 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 present invention control the behavior of a drill string and/or BHA in ... | 07/06/2010 |
| 7730970 | Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting levels A device and system for improving efficiency of subterranean cutting elements uses a controlled oscillation super imposed on steady drill bit rotation to maintain a selected rock fracture level. In one aspect, a selected oscillation is applied to the cutting element... | 06/08/2010 |
| 7681664 | Internally dampened percussion rock drill A percussion drill, and methods of using the same, including a shank in mechanical alignment with a piston-hammer and a valve in fluid communication with the piston-hammer. The percussion drill further includes an internal hydraulic dampening system for reducing the... | 03/23/2010 |
| 7647988 | Method and system for installing geothermal transfer apparatuses with a sonic drill The present invention relates to a method for drilling a hole and installing a geothermal transfer apparatus. A sonic drilling apparatus is positioned at a desired location. The sonic drilling apparatus includes a rotating and vibrating apparatus for rotating and vi... | 01/19/2010 |
| 7591327 | Drilling at a resonant frequency In one aspect of the invention, a method for drilling a bore hole includes the steps of deploying a drill bit attached to a drill string in a well bore, the drill bit having an axial jack element with a distal end protruding beyond a working face of the drill bit; e... | 09/22/2009 |
| 7497277 | Clamping device for axially harmonically oscillating components A clamping device connects two, axially harmonically oscillating components which oscillate, as a result of their respective plane surfaces impacting each other with a frequency ω in the form of a stationary longitudinal wave with a distance A between two nodes K. ... | 03/03/2009 |
| 7464772 | Downhole pressure pulse activated by jack element In one aspect of the present invention, a method has steps for forming a wellbore with a tool string bit having a body intermediate a shank and a working face. The bit body has a fluid passageway and at least a portion of a jack element is disposed within the body. ... | 12/16/2008 |
| 7392855 | Vibratory pile driving systems and methods A drive system for driving and/or extracting an elongate member. The drive system comprises a piston drive assembly, a hydraulic system, and a vibration drive assembly. The piston drive assembly comprises a piston member, and the piston member engages the elongate m... | 07/01/2008 |
| 7357030 | Apparatus and methods for determining at least one characteristic of a proximate environment Methods and an apparatus for determining at least one characteristic of an environment are disclosed. A vibrational energy may be imparted into an environment and a magnitude of damping of the vibrational energy may be measured and at least one characteristic of the... | 04/15/2008 |
| 7341116 | Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting elements A device and system for improving efficiency of subterranean cutting elements uses a controlled oscillation super imposed on steady drill bit rotation to maintain a selected rock fracture level. In one aspect, a selected oscillation is applied to the cutting element... | 03/11/2008 |
| 7317989 | Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data The present invention provides a chemometric equation to estimate fluid density, viscosity, dielectric constant and resistivity for a formation fluid sample downhole. The chemometric estimates can be used directly as estimated values for fluid density, viscosity, di... | 01/08/2008 |
| 7293616 | Expandable bit An expandable drill bit for use with earth drilling equipment. The bit includes arms held in a closed position, so that the bit may be inserted through casing or a small bore hole. The arms are expandable to create an expanded drill bit having a crown profile common... | 11/13/2007 |
| 7284623 | Method of drilling a bore hole A method for drilling a borehole through a production zone underlying an overburden of various earth formations includes drilling the borehole through the overburden with a first drill bit. The first drill bit being selected to optimize at least one drilling perform... | 10/23/2007 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7243731 | Apparatus for radially expanding tubular members including a segmented expansion cone An apparatus for radially expanding tubular members including a segmented expansion cone. ... | 07/17/2007 |
| 7219747 | Providing a local response to a local condition in an oil well 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 drill string. A controller is co... | 05/22/2007 |
| 7211909 | Monolithic integrated circuit arrangement A monolithic integrated circuit arrangement containing a substrate, a functional unit formed in and/or on the substrate, and an energy supply unit, which is formed in and/or on the substrate and is coupled to the functional unit and has an inductance and a permanent... | 05/01/2007 |
| 7195069 | Method and apparatus for backing off a tubular member from a wellbore A back-off tool for use in a tubular member disposed inside a wellbore. The back-off tool includes a housing and at least one sonic wave generator mounted within the housing. The sonic wave generator is configured to generate a plurality of sonic waves. ... | 03/27/2007 |
| 7191852 | Energy accelerator An apparatus for imparting mechanical vibration on a down-hole drilling system including a body, first and second couplers and a rotating member. The body includes ports configured to pass fluid through the body, and the first and second couplers are configured to c... | 03/20/2007 |
| 7188682 | Multi-stage diffuser nozzle A multi-stage diffuser nozzle for use as a drill bit nozzle jet includes a flow restriction portion upstream of a fluidic distributor portion, and also preferably includes a transition region between these two. The flow restrictor communicates with the interior flui... | 03/13/2007 |
| 7182152 | Sampling isolator A soil sampling system that in one embodiment includes a drill rod, a sampler or core barrel and an adapter coupling, for connecting the sampler barrel to the drill rod. In one embodiment the drill rod provides vibratory drilling movement, and the sampler barrel col... | 02/27/2007 |
| 7182155 | Locking split barrel sampler and soil sampling system Once the core barrel has been inserted into the ground to the appropriate depth for the required soil sample, it may be withdrawn by removing the entire drill string. Once withdrawn, the soil sample may be obtained by unscrewing the adapter coupling 12 and drive sho... | 02/27/2007 |
| 7178626 | Method of seismic evaluation of subterranean strata A method of conducting seismic evaluation of a subterranean formation wherein a rigid, elongate member having a first end and a second end is positioned such that the first end of the elongate member is at a point on the earth's surface, imparting an impulsive force... | 02/20/2007 |
| 7156189 | Self mountable and extractable ultrasonic/sonic anchor Self drilling anchors and related methods and apparatus. In one embodiment an apparatus comprises a drill bit, a hammer mechanism for hammering the drill bit in a first direction and in a second direction, and a selection mechanism for controlling whether, at a give... | 01/02/2007 |
| 7143915 | Process to fracture connecting rods and the like with resonance-fatigue A process to fracture connecting rods and the like, that are made of high strength materials, comprises of the following mechanisms: (a) Fatigue: fluctuation of stresses in a pre-notched connecting rod due to the use of harmonic excitation will extend t... | 12/05/2006 |
| 7139219 | Hydraulic impulse generator and frequency sweep mechanism for borehole applications This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring... | 11/21/2006 |
| 7134562 | Trailer-mounted vibratory apparatus A trailer-mounted crane apparatus includes a trailer supported from a ground surface on at least two wheels. A hydraulically operated crane arm is mounted to the trailer and is extendable outwardly. A crane hydraulic power unit is mounted to the trailer and supplies... | 11/14/2006 |
