Matches 1 - 50 out of 71 1 2 >


Match Document Document Title
US20060124360 Methods and apparatus for drilling, completing and configuring U-tube boreholes  
A borehole network including first and second end surface locations and at least one intermediate surface location interconnected by a subterranean path, and a method for connecting a subterranean...
US20170074042 DRILLING APPARATUS USING A SEALED SELF-ADJUSTING DEFLECTION DEVICE FOR DRILLING DIRECTIONAL WELLS  
An apparatus for drilling directional wellbores is disclosed that in one non-limiting embodiment includes a drive for rotating a drill bit, a deflection device that enables a lower section of a...
US20050000733 Systems and methods for performing mud pulse telemetry using a continuously variable transmission  
Systems and methods for performing mud-pulse telemetry are provided. One system includes a mechanical continuously variable transmission coupled to the modulator. The continuously variable...
US20140216819 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...
US20090272547 METHOD AND APPARATUS FOR A DOWNHOLE EXCAVATION IN A WELLBORE  
The method and apparatus can create excavation cavities suitable for drilling multilateral wellbores through the excavation using a kick-off. One embodiment of the method comprises isolating a...
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...
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...
US20110108327 DIRECTIONAL DRILLING CONTROL USING PERIODIC PERTURBATION OF THE DRILL BIT  
Disclosed herein is a system for steering the direction of a borehole advanced by cutting action of a rotary drill bit by periodically varying action of a drill bit while continuously rotating a...
US20100163308 DIRECTIONAL DRILLING CONTROL USING PERIODIC PERTURBATION OF THE DRILL BIT  
A system for steering the direction of a borehole advanced by cutting action of a rotary drill bit by periodically varying action of a drill bit while continuously rotating a drill string to which...
US20080202814 Earth-boring tools and cutter assemblies having a cutting element co-sintered with a cone structure, methods of using the same  
Methods of forming cutter assemblies for use on earth-boring tools include sintering a cone structure to fuse one or more cutting elements thereto. In some embodiments, one or more green, brown,...
US20100212901 DOWNHOLE VIBRATION APPARATUS AND METHODS  
A method of extending an earthen bore comprises the steps of rotating a drill bit at the end of a tubular while vibrating the tubular. The method results in reduced friction to tubular advance...
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...
US20100270079 Rotary directional drilling apparatus and method of use  
An apparatus for steering a drill string that includes at least one blade fixedly disposed on an exterior surface of the drill string, such that the at least one blade is rotatable about the drill...
US20060151211 Transmitting electric power into a bore hole  
A system for transmitting electric power into a bore hole, the system having an electric transmission line extending through the bore hole between an electric power source and a receiving station,...
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...
US20100307830 METHOD AND SYSTEM FOR PARTICLE JET BORING  
The present invention provides a method and system for the generation of, the utilization of, the processing of, and the maintenance of a heterogeneous solid-particle impactor-laden...
US20120024606 SYSTEM AND METHOD FOR DIRECTION DRILLING  
A system and a method for directional drilling may generate a model of steering behavior which may be used to estimate a position and an orientation of the drill bit during directional drilling....
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...
US20150144401 HYDRAULICALLY ACTUATED TOOL WITH ELECTRICAL THROUGHBORE  
A bottom hole assembly includes a drill string, a bit coupled to an end of the drill string, a rotary steerable system coupled to the drill string above the bit, a hydraulically actuated tool...
US20160326805 PISTON CONVERTER FOR DOWNHOLE DRILLING TOOL  
A steerable drilling tool in accordance to an embodiment includes a steering actuator having an axially moveable piston connected to a steering pad by a linkage to convert axial movement of the...
US20060065395 Removable Equipment Housing for Downhole Measurements  
The present invention is directed to a removable sealed housing for equipment that may be employed in obtaining downhole measurement data and methods for making same. In one illustrative...
US20170030180 Drain Hole Drilling in a Fractured Reservoir  
Method for increasing production rate of horizontal wells having hydraulic fractures formed along a horizontal segment of the well by drilling drain holes to intersect the hydraulic fractures is...
US20130292181 DIRECTIONAL DRILLING  
A method of controlling the direction of drilling comprising: providing a drill bit comprising mechanical cutting means forming a bit face and a plurality of nozzles for ejecting drilling fluid...
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...
US20160326804 PRESSURE AMPLIFIERS FOR DOWNHOLE DRILLING TOOLS  
A drilling system includes a drill string having a BHA carrying a drill bit, a steering pad carried by the BHA and radially moveable relative to a longitudinal axis of the BHA and a pressure...
US20080271925 Acid tunneling bottom hole assembly  
A bottom hole assembly connected to coiled tubing to create an acid tunnel in a wellbore formation. High pressure acid is pumped down the coiled tubing and out a nozzle located at the end of the...
US20110284292 Apparatus and Method for Steerable Drilling  
A method for drilling a wellbore comprises extending a rotatable drill string in the wellbore, where the drill string has a bottom hole assembly coupled to a bottom end thereof. A lower section of...
US20130032399 Systems and Methods for Directional Pulsed-Electric Drilling  
Pulsed-electric drilling systems can be augmented with a steering mechanism that shifts at least a portion of a bit relative to a borehole centerline. Illustrative mechanisms include...
US20160069139 Rotary Steering with Multiple Contact Points  
A system in which a drill string is disposed within a wellbore that extends from a wellsite surface to a subterranean formation. At least three rotary steerable system (RSS) modules are...
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)...
US20060144621 Tool insert  
A tool insert comprises a substrate (40), a layer of ultra-hard abrasive material (52) bonded to the substrate and presenting a primary cutting edge (54) for the tool insert, and a protective...
US20160084007 Back-Reaming Rotary Steering  
A rotary steerable system (RSS) having multiple steering pads, a valve to sequentially actuate the plurality of steering pads, and a back-reaming bit formed by multiple cutting elements carried by...
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...
US20120067646 Apparatus and Method for Lateral Well Drilling  
A downhole tool assembly for cutting laterally into an earthen formation from a wellbore. The downhole tool assembly includes a cutting head assembly and a flexible tubular shaft member, wherein...
US20050133268 Method and apparatus for casing and directional drilling using bi-centered bit  
In one aspect, the present invention provides an apparatus to drill a borehole with a casing string. The casing string has affixed thereto a directional drilling assembly and a bi-centered cutter...
US20170044887 MULTI PURPOSE DRILLING SYSTEM AND METHOD  
A method of forming a multi purpose drilling for degassing a coal seam that is to mined, the method including the steps of drilling a primary borehole from a surface into a zone above the coal...
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...
US20130056277 Method and Device for Producing an Opening from a Motherbore and into a Formation  
A method and device for producing an opening from a motherbore into the surrounding formation, wherein the method includes: positioning a motor, having a rotatable barrel, in the motherbore;...
US20140008129 MULTIDIRECTIONAL WELLBORE PENETRATION SYSTEM AND METHODS OF USE  
A drilling assembly includes a hydraulic jet disposed on a downhole end of a fluid line, and one or more adjustable jet nozzles on the hydraulic jet in multiple angular orientations relative to a...
US20070137897 Combined directional and impact drilling motor  
A directional drilling mechanism is disclosed. The mechanism is also an impact drill.
US20110155466 VARIED RPM DRILL BIT STEERING  
A method of steering a drill bit while drilling a wellbore can include periodically increasing a rotational speed of the drill bit while drilling the wellbore, with the rotational speed being...
US20170058617 Eccentric Stabilizer for Use in a Synchronous Rotary Steerable System  
A method and apparatus for steering a drilling assembly (200) during drilling operations for oil and gas. The steering assembly being disposed in a borehole (10) and comprising a drill bit (120)...
US20080142268 ROTARY STEERABLE DRILLING APPARATUS AND METHOD  
The present invention relates to drilling apparatus which includes a steerable bottom hole assembly for use in a well bore. The steerable bottom hole assembly includes a bent sub assembly...
US20160115743 Modified Wellbore Casing Trajectories  
An oil and gas casing includes an upper section, a curved section, and a lower section. The upper section extends down from a seafloor to the curved section. The curved section is curved between...
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...
US20100101864 ANTI-WHIRL DRILL BITS, WELLSITE SYSTEMS, AND METHODS OF USING THE SAME  
A wellsite system includes a drill string suspended within a borehole, anti-whirl drill bits for use in the system, and methods of drilling a curved borehole in a subsurface formation. The drill...
US20160123128 GAS INJECTION APPARATUS WITH CONTROLLABLE GAS INJECTION POINT, GAS INJECTION PROCESS, AND GASIFICATION METHOD  
A gas injection apparatus with a controllable gas injection point, a gas injection process, and a gasification method. The gas injection apparatus comprises a directional well channel, where a...
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...
US20160177685 MULTILATERAL WELL COMPLETIONS TO IMPROVE INDIVIDUAL BRANCH CONTROL  
Methods and systems for enhanced thermal recovery of subsurface hydrocarbons comprising the use of multilateral branches, wherein the multilateral wells are completed in a manner to improve...
US20160160625 Method for developing oil or natural gas shale or tight rock formations in two step process  
A method for developing oil or natural gas shale or tight rock formations by constructing wells in a two step process. The method includes an algorithm for determining under what conditions this...

Matches 1 - 50 out of 71 1 2 >