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US20120031676 APPARATUS AND METHOD FOR DIRECTIONAL DRILLING  
A directional drilling system and method are provided for directional drilling a borehole by continuous rotating of the drill string in combination with an arrangement of drilling motor assemblies...
US20140090894 DIVERTER LATCH ASSEMBLY SYSTEM  
A system and methodology facilitates use of a diverter latch assembly in cooperation with a lateral wellbore. The diverter latch assembly comprises an upper latch assembly coupled with a lower...
US20120018218 Method and apparatus for directional drilling  
A bottom-hole assembly for directional drilling incorporates a torque generator with a drive shaft connected to a drill string. The torque generator generates a torque that counters a reactive...
US20100307736 Permanent Bypass Whipstock Assembly For Drilling and Completing a Sidetrack Well and Preserving Access to the Original Wellbore  
The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
US20120205159 RECEIVING LATERAL WELLBORE AND METHOD FOR IMPLANTING SAME  
The present invention relates to an innovative wellbore concept, which gives experts a new alternative enabling them to analyse the economic viability of a deposit. The new structural arrangement...
US20120031677 DIRECTIONAL WELLBORE CONTROL BY PILOT HOLE GUIDANCE  
A directional drilling apparatus include a first cutter that substantially cuts a wellbore bottom along a first axis and a second cutter that cuts the wellbore bottom along a second axis different...
US20110162891 Rotating Drilling Tool  
Embodiments described herein comprise a system and method for controlling directional drilling. The system includes a conveyance for conveying a bottom hole assembly BHA into a wellbore. The BHA...
US20150021094 DUAL MOTOR SYSTEMS AND NON-ROTATING SENSORS FOR USE IN DEVELOPING WELLBORES IN SUBSURFACE FORMATIONS  
A method for forming a subsurface wellbore is disclosed. The method includes operating a drilling string in a first direction of rotation. A first motor located near the end of the drilling string...
US20090114448 EXPANDABLE ROLLER REAMER  
An expandable downhole tool for use in a drilling assembly positioned within a wellbore includes a tool body having an axial flowbore extending therethrough and a moveable arm. The moveable arm...
US20110278070 SYSTEM AND METHOD FOR DRILLING LATERAL BOREHOLES  
A drilling system for drilling a lateral borehole from a main borehole comprises a tubular conduit through which a fluid can be pumped, and a drilling assembly connected to the tubular conduit so...
US20140027183 METHOD AND SYSTEM FOR INSTALLATION OF IN-GROUND CONDUIT  
The present disclosure is directed toward systems and methods for trenchless installation of a conduit. According to the examples herein, a conduit may be installed underground using the conduit...
US20110061937 WELL CONSTRUCTION USING SMALL LATERALS  
This invention relates to the construction of well such as oil and gas wells using techniques based on drilling small lateral wells from a main well. The problem of narrow pressure window is...
US20120318580 EARTH-BORING TOOLS INCLUDING RETRACTABLE PADS, CARTRIDGES INCLUDING RETRACTABLE PADS FOR SUCH TOOLS, AND RELATED METHODS  
An earth-boring tool may comprise at least one cavity formed in a face thereof. At least one retractable pad residing in the at least one cavity may be coupled to a piston located at least...
US20110088951 DUAL BHA DRILLING SYSTEM  
The invention relates to apparatus and methods useful for drilling lateral boreholes into a formation surrounding a main borehole. Proposed technique can be used for drilling of laterals which...
US20140246242 COMPONENTS OF DRILLING ASSEMBLIES, DRILLING ASSEMBLIES, AND METHODS OF STABILIZING DRILLING ASSEMBLIES IN WELLBORES IN SUBTERRANEAN FORMATIONS  
A component of a drilling assembly comprises at least one blade having a gauge region comprising a bearing face for engaging a sidewall of a wellbore in a subterranean formation during rotation of...
US20120222902 HIGH PERFORMANCE WELLBORE DEPARTURE AND DRILLING SYSTEM  
A system and method facilitate drilling of lateral wellbores by optionally eliminating one or more trips downhole. The system and method provide for drilling a lateral wellbore by enabling the...
US20130168151 SYSTEM AND METHOD TO FACILITATE THE DRILLING OF A DEVIATED BOREHOLE  
A system and method for facilitating the drilling of a deviated borehole. The system and method employ a flexible conveyance. A hydraulic actuation assembly is coupled to the flexible conveyance...
US20120318582 MULTILATERAL SYSTEM WITH RAPIDTRIP INTERVENTION SLEEVE AND TECHNIQUE FOR USE IN A WELL  
A method for constructing a multilateral well includes drilling a main well, drilling a first lateral well from the main well, installing a production reentry deflection tool in the main well,...
US20070261887 Steering Systems for Coiled Tubing Drilling  
A technique provides a drilling system and method in which a drilling assembly is delivered downhole on coiled tubing. The drilling assembly comprises a drill bit and a motor to rotate the drill...
US20130270005 METHODS AND SYSTEMS FOR DRILLING  
A method of controlling a direction of drilling of the drill string used to form an opening in a subsurface formation, comprises varying a speed of the drill string during rotational drilling such...
US20070007000 Method of drilling an enlarged sidetracked well bore  
A method of milling a window through a casing in a primary well bore and drilling an enlarged sidetracked well bore comprises running into the primary well bore a drilling assembly comprising at...
US20140246241 String Supported Whipstock for Multiple Laterals in a Single Trip and Related Method  
A whipstock is supported adjacent the lower end of a string during the drilling of the lateral. It has no integrated anchor. The BHA is delivered through the string that supports the whipstock....
US20150226009 Near-Bit Borehole Opener Tool and Method of Reaming  
The present disclosure relates to a near-bit borehole opener (reamer) tool and a method of drilling a wellbore comprising: (a) disposing in the wellbore a tool string; (b) lowering and rotating...
US20090183921 FLOW OPERATED ORIENTER  
Embodiments of the present invention generally relate to a flow operated orienter. In one embodiment, a bottom hole assembly (BHA) for use in drilling a wellbore includes: a first mud motor having...
US20140060935 APPARATUS AND METHOD FOR DRILLING A WELL  
A method for forming a controllable bend angle in a drill string in a wellbore comprises attaching an upper housing to a drill string. At least, one drive motor is anchored in the upper housing. A...
US20120228031 RAM BORING DEVICE  
The invention relates to a ram boring device for creating horizontal boreholes, having an impact piston which moves in an oscillatory manner within a casing of the ram boring device and of which...
US20110005838 HORIZONTAL DIRECTIONAL DRILLING SYSTEM  
The invention relates to a horizontal directional drilling system, comprising a dual string (1), said dual string (1) comprising an inner string (2), and an outer string (3), said inner string (2)...
US20120111636 COMBINATION WHIPSTOCK AND COMPLETION DEFLECTOR  
Assemblies can be disposed in a subterranean bore. An assembly can include a surface that can divert a cutting tool for creating a branch wellbore and that can divert a completion component for...
US20080164065 Construction of a Tubular at a Downhole Location  
A method for constructing a lateral hole (303) departing from a main well (302) at a determined depth, the lateral hole (303) having a direction of elongation forming a determined angle with the...
US20100032212 Downhole adjustable bent-angle mechanism for use with a motor for directional drilling  
A housing including longitudinally extending tubular members interconnected to allow controlled relative bending thereof, during a drilling operation, a rotary drive transmitting torsion bar...
US20050279531 LATERAL BORING SYSTEM  
A lateral boring device for effective utility installation under sidewalks, driveways, and other obstacles. The present invention utilizes a hand-held drill, a flexible shaft, a blade attachable...
US20100065336 Top drive systems with main shaft deflecting sensing  
A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, and sensing apparatus for sensing bending of the main shaft;...
US20140326510 WIRELINE DRILLING SYSTEM  
A wireline drilling system for the hydrocarbon exploration and production industry incorporating a drilling cuttings removal system which acts to remove and store cuttings displaced by a drill bit...
US20100018773 Tilted Drive Sub  
A tilted drive sub is disclosed with a center line of the internal diameter (ID) offset at an angle from the center line of the outer diameter (OD) starting at a point near to a top end of the...
US20070137897 Combined directional and impact drilling motor  
A directional drilling mechanism is disclosed. The mechanism is also an impact drill.
US20110120725 WELLBORE INSTRUMENTS USING MAGNETIC MOTION CONVERTERS  
A directional drilling system, a drilling hammer and a fluid flow telemetry modulator use a plurality of magnets arranged to convert rotational motion into reciprocating linear motion. Various...
US20090321137 Drill bit having no gage pads and having the ability to drill vertically and laterally  
A drill bit having a plurality of cutters on its lower surface, each of which can having a plurality of PDC cutter elements disposed thereon. The cutting surface on each of the cutters is mounted...
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...
US20110203851 T-Frac System Run in System  
A central slant hub tool is provided which is capable of receiving tubing or a tool such as a drill from the surface and directing the tube or tool laterally outward using an exit line slant...
US20130192898 HYDRAULIC BRAKE FOR DRILLING-BIT  
Method for blocking/braking at least one conical inlet wheel of a drilling-bit of a drilling tool, said method consisting in using at least one toothed wheel (1) of said drilling-bit as an element...
US20090120691 SYSTEMS AND METHODS FOR GUIDING THE DRILLING OF A HORIZONTAL WELL  
System and methods for guiding the drilling of a horizontal well are disclosed. A current is provided in at least one conductor positioned in a target vertical well. A magnetic field generated by...
US20110290561 Downhole Hydraulic Jetting Assembly, and Method for Stimulating a Production Wellbore  
A method for forming lateral boreholes from an existing parent wellbore is provided. The wellbore has been completed with a string of production casing. The method generally comprises providing a...
US20120228032 EXPANDABLE WINDOW MILLING BIT AND METHODS OF MILLING A WINDOW IN CASING  
A method of milling a window through a casing in a primary well bore and drilling an enlarged sidetracked well bore comprises running into the primary well bore a drilling assembly comprising at...
US20150129311 Motor Integrated Reamer  
In one aspect, an apparatus for use in a wellbore is disclosed that in one non-limiting embodiment may include a drive system coupled to a drill bit by a drive sub for drilling a wellbore, wherein...
US20060185899 Underground drilling device employing down-hole radar  
Devices for sensing at an underground drilling device in communication with an above-ground locator involve transmitting a radar probe signal from the underground drilling device. A radar return...
US20100044110 Ultra-low friction coatings for drill stem assemblies  
Provided are drill stem assemblies with ultra-low friction coatings for subterraneous drilling operations. In one form, the coated drill stem assemblies for subterraneous rotary drilling...
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...
US20070163810 Flexible directional drilling apparatus and method  
A bottom hole assembly to directionally drill a subterranean formation includes a drill bit, a stabilizer assembly located proximate to and behind the drill bit, a drilling assembly comprising a...
US20120255780 METHOD AND APPARATUS FOR CALCULATING AND CORRECTING FOR DIRECTIONAL DRILLING TOOL FACE OFFSETS  
A method for correcting for tool face offset in directional drilling components, namely between a directional sensor reference point and a high side of a bent sub. Graduated markings applied on an...
US20110240368 BENDING OF A SHAFT OF A STEERABLE BOREHOLE DRILLING TOOL  
In certain embodiments, a steerable drilling tool is provided including a rotatable shaft extending through a housing where the shaft and the housing are separated by at least one bearing or two...

Matches 1 - 50 out of 320 1 2 3 4 5 6 7 >