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US20100089653 ISOLATION SYSTEM FOR DRILLING SYSTEMS  
In at least one example, an isolation system includes at least one air bladder assembly including at least one air bladder and at least one coupling member coupling the air bladder to a drill...
US20130313022 ROTATIONAL LOCKING MECHANISMS FOR DRILLING MOTORS AND POWERTRAINS  
Rotational locking mechanisms for drill string assemblies, bottom hole assemblies, and drilling motors are presented herein. A fluid-driven motor assembly is disclosed for use in a drill string to...
US20140224545 Driveshaft Assembly for a Downhole Motor  
A driveshaft for a downhole motor has a longitudinal axis and includes a first end. In addition, the driveshaft includes a second end opposite the first end. The first end has a radially outer...
US20130199846 MOTOR SAVER SUB FOR DOWN HOLE DRILLING ASSEMBLIES  
A down hole drilling tool for preventing overpressure strain on surface pumping equipment or a down hole drilling motor having a housing and a circulation port and four hydraulic valves positioned...
US20110180329 SYSTEMS AND METHODS FOR PROVIDING A GEARLESS DRILLING TURBINE  
A drilling sub assembly adapted to be coupled between a drill bit of a drilling rig and a drill pipe, the drilling sub assembling including a turbine unit directly coupled to the drill bit via a...
US20050161259 Unsymmetrical profile threads for use in a positive displacement motor housing  
The present invention provides an unsymmetrical thread profile used to connect stator housings of a positive displacement motor. The unsymmetrical thread profile comprises one or more non-load...
US20130056276 System and Method for Conducting Drilling and Coring Operations  
A system and method are disclosed for drilling a well and obtaining a downhole core sample. A drilling rig includes a pivotal mast. The mast supports an injector thereon with an injector axis...
US20130092444 CUTTING TOOL INTEGRATED IN A DRILLSTRING  
The present invention discloses a cutting tool integrated in a drillstring for enlarging a borehole, where the cutting tool at least comprises: one or more side mills (12, 13, 14) arranged along...
US20150083500 Mud motor assembly  
A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus...
US20120234603 Mud motor assembly  
A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus...
US20060131079 Composite motor stator  
A hollow stator for a Moineau-style motor is constructed from a composite material such as fiberglass or graphite. A series of lobes arranged along its inner surface corresponds to the external...
US20130048386 PULSING TOOL  
A pulsing tool for use with a tubular string having a motor unit and a pulsing unit coupled to the motor unit. In one embodiment, the pulsing unit includes a mandrel having an inlet opening and an...
US20110073374 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...
US20050045381 Method of stabilizing a downhole drilling motor and a downhole drilling motor  
A method of stabilizing a downhole drilling motor. A first step involves securing a plurality of vanes to an exterior surface of a stator housing of the drilling motor. A second step involves...
US20140116785 Turbodrill Using a Balance Drum  
A turbodrill using a balance drum. The turbodrill may include a housing having an upper end that is configured to be coupled to a drill string. The turbodrill may also include a rotatable shaft...
US20060113114 Drilling tool and method  
A drill tool comprising a drill pipe having a turbine and a hydraulic pump, wherein drilling fluid is passed through the turbine and into the hydraulic pump through a hollow shaft in the drill...
US20130292180 Steerable Gas Turbodrill  
A gas turbodrill with an adjustable bent housing for use in a spur lateral drilling application. The gas turbodrill includes a high-speed gas turbine, a gearbox assembly, a pivoting shaft...
US20100122850 Systems and methods for protecting drill blades in high speed turbine drills  
A drilling assembly in an elongated hole including a housing defining an interior with a plurality of motor stages in the interior. Each motor stage has at least one blade with supporting platform...
US20090159281 RUNNING BORE-LINING TUBULARS  
A method of running a tubular string into a wellbore comprises running a bore-lining tubular string into a wellbore substantially without rotation, while rotating a cutting structure at a distal...
US20120118647 DOWNHOLE MUD MOTOR AND METHOD OF IMPROVING DURABILTY THEREOF  
A downhole mud motor includes, a stator, a rotor in operable communication with the stator, and a plurality of nanoparticles embedded in at least a portion of the stator
US20140060936 MOTOR AND ROTOR CATCH ASSEMBLY  
A motor and rotor catch assembly for preventing loss of broken motor parts downhole. The assembly comprises a motor including a rotor supported inside a stator housing. A rotor bolt is connected...
US20090272581 LOAD DISTRIBUTION FOR MULTI-STAGE THRUST BEARINGS  
A drilling motor includes an upper end connection adapted to connect to a drill string, and a lower end connection adapted to connect to a drill bit, a thrust bearing assembly having a plurality...
US20100175925 PUMP CONTROL FOR FORMATION TESTING  
A while-drilling tool comprising a motor, a transmission coupled to the motor, and a pump comprising a first piston disposed in a first chamber and a second piston disposed in a second chamber and...
US20140014368 DOWNHOLE DRIVING UNIT HAVING A HYDRAULIC MOTOR IN A WHEEL  
The present invention relates to a downhole driving unit (11) (for insertion into a well, comprising a driving unit housing (51), an arm assembly (60) movable between a retracted position and a...
US20140246240 DOWNHOLE DRILLING TOOL  
A directional drilling tool includes a housing defining a central cavity for enabling the transmission of drilling fluid through the drill string. A motor contained in the housing includes a...
US20050211471 System and method for controlling drill motor rotational speed  
In one embodiment, a system for controlling drill motor rotational speed includes a downhole motor disposed in a drill string and having a rotor operable to be rotated by a flow of drilling fluid...
US20090152009 Nano particle reinforced polymer element for stator and rotor assembly  
A nano particle reinforced polymer element of a stator and rotor assembly for a power section of a positive displacement fluid motor or a progressive cavity pump. Nano-sized particles are blended...
US20070251729 Downhole motor with a continuous conductive path  
A downhole drilling motor comprising a housing and a shaft extending within the housing, wherein the shaft is movable relative to the housing. Further, a conducting path extends within the housing...
US20050126826 Directional casing and liner drilling with mud motor  
A directional casing drilling system includes a casing string, a mud motor operatively coupled to the casing string, a rotary steerable system operatively coupled to the mud motor, and a drill bit...
US20140251689 FLOW MEASUREMENT AND FLOW SAMPLING SYSTEM  
An apparatus includes a body having a central axis, a fluid inlet coupled to the body, the fluid inlet being adapted to receive a flow of a fluid, and a fluid outlet coupled to the body. The fluid...
US20150068810 Apparatus for Preventing Separation of Downhole Motor from Drillstring  
A separation catch mechanism disposed above a power section of a motor prevents full separation of lower components of the motor from upper components and an attached drillstring. An extension of...
US20150252621 Rotary Stick, Slip and Vibration Reduction Drilling Stabilizers with Hydrodynamic Fluid Bearings and Homogenizers  
Apparatus and method comprising a hydrodynamic bearing disposed about a shaft and within a bore's wall with at least one periphery arced wall radially extending from and arranged about the...
US20150167388 MUD MOTOR  
This application is directed to a pressure balanced mud motor and a method of using the mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a...
US20130048384 APPARATUS AND METHOD FOR CONTROLLING OR LIMITING ROTOR ORBIT IN MOVING CAVITY MOTORS AND PUMPS  
A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to...
US20140014365 DOWNHOLE DRIVING UNIT HAVING A HYDRAULIC MOTOR WITH A PLANETARY GEARING SYSTEM  
The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing (51), a hydraulic motor (23) comprising a hydraulic motor housing (93), a...
US20140041943 DRILLING MOTOR VALVE AND METHOD OF USING SAME  
A valve (11) for controlling the flow of a drilling fluid through a down-hole tool (10) positionable in a wellbore penetrating a subterranean formation. The down-hole tool has a housing with a...
US20100006342 METHOD OF MAKING WELLBORE MOINEAU DEVICES  
A method of making a drilling motor for use in a wellbore includes defining a profile for an inner surface of a stator; configuring at least one cutting element on a support to at least partially...
US20100065334 Turbine Driven Hammer that Oscillates at a Constant Frequency  
In one aspect of the present invention a hammer assembly comprises a substantially coaxial jack element with a distal end extending beyond a working face of a drill bit. A porting mechanism within...
US20150218885 Anti-Reverse Mechanism for Mud Motor  
Disclosed are systems and methods for preventing backdriving of a mud motor through its output. One disclosed mud motor may include a housing having a longitudinal axis, a rotor disposed within...
US20070068704 Active buttonhole pressure control with liner drilling and completion systems  
One exemplary APD Device is used with a liner drilling assembly to control wellbore pressure. The APD Device reduces a dynamic pressure loss associated with the drilling fluid returning via a...
US20100307833 JET TURBODRILL  
A turbine drill motor capable of operation at ultra-high rotary speeds (i.e., in excess of 1000 rpm, which is very high for turbine drill motors), with a high-pressure jet-assist functionality for...
US20050139394 Expandable screen utilizing near neutrally-buoyant particles outside of the screen  
In one embodiment, a wellbore completion method includes disposing an expandable screen into a well bore and disposing a fluid into an annular space between a wall of the wellbore and the...
US20150226012 Downhole Self-Isolating Wellbore Drilling Systems  
One example of a downhole self-isolating wellbore drilling system to pulverize formation cuttings includes a cutting grinder tool and an isolation tool. The cutting grinder tool can be attached to...
US20150114721 Downhole Motor with Concentric Rotary Drive System  
A rotary fluid drive has first and second bodies 20, 120. The second body 120 is rotatable relative to and inside of the first body 20 defining a working fluid space 40 there between. Gates 130...
US20070007041 Active controlled bottomhole pressure system and method with continuous circulation system  
An APD Device provides a pressure differential in a wellbore to control dynamic pressure loss while drilling fluid is continuously circulated in the wellbore. A continuous circulation system...
US20140014366 DOWNHOLE DRIVING UNIT HAVING A HYDRAULIC MOTOR WITH A STATIC CAM RING  
The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing (51), a hydraulic motor comprising a hydraulic motor housing (93), the...
US20110100715 CENTER DISCHARGE GAS TURBODRILL  
A compact gas turbine motor and a speed reduction transmission capable of providing the speed and torque required for drilling with center discharge bits. The transmission includes two sun gears...
US20150129314 Downhole Motor  
A downhole motor having a motor section, a drive shaft section, and an output shaft section. The output shaft section has a rotatable output shaft with a first end and a second end. A first thrust...
US20110147091 DOWNHOLE MOTOR  
A downhole motor having a motor section, a drive shaft section, and an output shaft section, the output shaft section having a rotatable output shaft with a first end and a second end, a first...
US20150167389 MUD MOTOR  
This application is directed to a pressure balanced mud motor and a method of using the mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a...

Matches 1 - 50 out of 129 1 2 3 >