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Matches 351 - 400 out of 13,839

Document Document Title
WO/2019/081318A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide obtained by hydrolyzing acrylonitrile in water in the presence of a biocatalyst capable of converting acrylonitrile...  
WO/2019/083516A1
An agitator for vibrating a drill string includes an agitator housing, a rotor and an agitation mass. The drill string has a central axis. The rotor is coupled to the agitator housing and being rotatable about an agitator axis. The agita...  
WO/2019/081008A1
The present invention relates to methods for preparing aqueous acrylamide solutions having a low acrylic acid concentration, aqueous acrylamide solutions obtainable by such methods, and acrylamide homopolymers or copolymers obtainable by...  
WO/2019/081331A1
The present invention relates to methods for preparing aqueous acrylamide solutions having a low acrylic acid concentration, aqueous acrylamide solutions obtainable by such methods, and acrylamide homopolymers or copolymers obtainable by...  
WO/2019/081327A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein th...  
WO/2019/081323A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein th...  
WO/2019/083622A1
A rotary steerable tool used for directional drilling include a housing, at least one external director, and at least one valve. The external director is hydraulically movable to an extended condition relative to the housing, and the val...  
WO/2019/081330A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein th...  
WO/2019/079899A1
An electrically powered drilling rig, such as for slim hole drilling, includes a drilling floor positioned over a drilling well, a set of pieces of drilling equipment operable for drilling the well, a first enclosure being positioned rem...  
WO/2019/081321A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein th...  
WO/2019/081320A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein th...  
WO/2019/081003A1
Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein th...  
WO/2019/076135A1
Disclosed is a drilling speed-raising device capable of producing double actions of hydraulic pulse and impact vibration. The device comprises an upper joint (1), a drilling tool body (2) and a lower joint (3). The upper end of the lower...  
WO/2019/075508A1
The present disclosure relates to an underreamer. In one aspect, the underreamer comprises a body, the body comprising at least one pocket therein, the underreamer further comprising at least one cutter secured with respect to the body, ...  
WO/2019/077518A1
A drilling apparatus and a method for releasing rods stuck in surrounding ground are described, that use a torsional device for releasing the drilling assembly and induce centrifugal forced vibrations and bending vibrations in the drilli...  
WO/2019/072836A1
A drill string sub for a rotary steerable drilling system wherein a flow diverter is configured, which flow diverter is configured rotatable about a drill string longitudinal axis at a relative rotation frequency relative to the drill st...  
WO/2019/071329A2
Offshore production systems and methods relating thereto are disclosed. In an embodiment, the offshore production system includes a surface vessel. In addition, the offshore production system includes a closed-loop cooling fluid circulat...  
WO/2019/073123A1
An arrangement and method for installing a casing. The arrangement (100) comprises a casing (1 ), a bar part (2) adapted rotatable inside the casing, the arrangement further comprising a borer (6) which comprises a blade part (15) to rel...  
WO/2019/075076A1
The present invention provides a method and apparatus for increasing the drift diameter and improving the well path of the wellbore, accomplished in one embodiment by cutting away material primarily forming surfaces nearer the center of ...  
WO/2019/014548A9
A method for mitigating a fluid flow from a target wellbore using a relief wellbore includes receiving wellbore geometry information of the target wellbore, receiving an initial interception point of the target wellbore, simulating a cha...  
WO/2019/075126A1
Methods and apparatus for releasing a lead mill of a BHA from a whipstock in a wellbore include slideably releasing the BHA from the whipstock without relative rotation and without destruction of a retractable bolt. A system includes: a ...  
WO/2019/070639A1
A boring bit such as for horizontal directional drilling is provided which includes a hard faced layer that is preferably made by a laser cladding bead. The laser clad bead may be applied in some regions to a greater extent and in other ...  
WO/2019/068938A2
In preparation for directional drilling, a wedge supported distally ahead of a tubular drill string is advanced along a parent hole. The wedge is connected to the drill string by a rigid link that extends along a central longitudinal axi...  
WO/2019/066930A1
Tagging bottom utilizing an automated control system and downhole tools may include determining, by a computer processor, that a drill bit has reached a predetermined distance from a bottom of a wellbore, in response to determining that ...  
WO/2019/068057A1
A system for increasing low pressure zones for microbial enhanced oil recovery through radially drilled narrow, high surface area bore holes around a well bore is provided. A drill string is inserted into and directed horizontally and pe...  
WO/2019/067402A1
A whipstock system and methods are disclosed, including a whipstock body, a control unit mounted on or in the whipstock body, the control unit comprising transmitters and receivers operable to receive commands from an external source, ac...  
WO/2019/067787A1
An auger rig for use for a portable ice auger is disclosed. The rig includes a support structure and an auger carriage movable between a raised position and a lowered position via a drive mechanism for drilling an ice hole. In illustrate...  
WO/2019/063972A1
A method of controlling a well in a geological structure, the well comprising: a first casing string (12a), and a second casing string (12b) at least partially inside the first casing string thus defining a first inter-casing annulus the...  
WO/2019/060236A1
A method for identifying anomalous mud flow includes determining an operating rate of a mud pump discharging to a pipe string in a wellbore. Mud returned from the wellbore is moved to a first metering tank. Mud is moved from the first tr...  
WO/2019/048094A1
A mining or construction vehicle (10) comprising an extendable boom (12) comprised of a first and a second telescopic section (13,14) extending in a longitudinal direction (D1), wherein the first telescopic section (13) is arranged to be...  
WO/2019/051378A1
A double stage drill string stabilizer adapted to condition the well bore and reduce vibrations in the drill string as the device passes thought the well bore is disclosed. The drill string stabilizer comprises a tubular body and at leas...  
WO/2019/048093A1
A mining or construction vehicle (10) comprising a boom (12) extending in a first direction (D1), which boom (12), via a first and a second rotation device (15,16), is connected to a hydraulic device arranged on a mounting device (11) ar...  
WO/2019/025761A3
A tool for milling a window in a casing (3) of a borehole, the tool comprising: a main body having a longitudinal axis wherein, when the tool is run into a borehole, the longitudinal axis is substantially parallel with the longitudinal a...  
WO/2019/042755A1
The present invention refers to an apparatus for thermal spallation of a borehole, wherein the borehole comprises a proximal region with a borehole fluid with a pressure pH2O, and a distal region filled with a fluid, in particular filled...  
WO/2019/046675A1
Embodiments disclosed herein describe a rotating flow coupler that is configured to couple multiple sections of a casing for a horizontal well, wherein the rotating flow coupler is configured to rotate relative to the casing allowing an ...  
WO/2018/222079A8
The invention relates to the field of pipeline construction by a horizontally directed drilling method. A drilling head comprises a housing provided with a front large end having a thread for connection of a drilling blade, a rear large ...  
WO/2019/040039A1
A system for real-time steering of a drill bit includes a drilling arrangement and a computing device in communication with the drilling arrangement. The system iteratively, or repeatedly, receives new data associated with the wellbore. ...  
WO/2019/037804A1
For holes, during part one of the conveyance, rock is generally cut in blocks section by section, for example, but not exclusively, having a rectangular hole cross section; the edges are generally vertical or very steep having, for examp...  
WO/2019/034834A1
A bulk material drilling system is described, the drilling system arranged to allow accurate directional control of a drill bit through bulk material via non-mechanical means, while providing real-time feedback on drill bit positioning. ...  
WO/2019/005819A4
A method for generating an output of a downhole inertial measurement unit (IMU) includes: generating a trajectory between a plurality of survey points of a planned well data as a function of time, wherein the planned well data includes a...  
WO/2019/028500A1
A sensor module for a marine buoyancy unit is disclosed, the marine buoyancy unit configured to be releasably connected to a marine riser. The sensor module comprises a housing releasably connectable at least partially within the marine ...  
WO/2019/032759A1
Spherical projectiles may be used to form one or more holes in geologic or other material. These holes may be used for drilling, tunnel boring, excavation, and so forth.  
WO/2019/033039A1
An automated slide drilling system (ASDS) may be used with a drilling rig system to control slide drilling. The ASDS may autonomously control slide drilling without user input during the slide drilling. The ASDS may further support a tra...  
WO/2019/025761A2
A tool for milling a window in the casing of a borehole, the tool comprising: a main body having a longitudinal axis wherein, when the tool is run into a borehole, the longitudinal axis is substantially parallel with the longitudinal axi...  
WO/2019/027462A1
A method to provide support within a wellbore includes underreaming a section of the wellbore at a depth spanning a layer of an unstable formation. The method also includes deploying a bistable structure within the wellbore at the depth ...  
WO/2019/025008A1
The present invention provides an oxygen lance having a wooden casing, a process for production of silicon metal or metal alloy in an arc furnace, wherein liquid silicon metal or metal alloy is produced and the liquid metal or metal allo...  
WO/2019/022601A1
The present invention relates to a system and method for casing drilling with a subsea casing drive adapted to engage at the outer circumference of the casing string, to impart a linear force and/ or torque to the casing string, and such...  
WO/2019/021042A1
Hole enlargement procedure and apparatus for the implementation thereof The subject of the invention is the procedure for the enlargement of a hole drilled into the ground, during the preparatory phase of which a drill pipe, driven throu...  
WO/2019/018927A1
A drilling system having retractable wings and method of using same. The system includes at least one wing, which can extend from the system once it engages in a casing and abuts against an abutment ring at the bottom end of the casing. ...  
WO/2019/022581A1
The present invention relates to an apparatus for drilling a hole in the ground and a ground reinforcing method and, more specifically, to an improved hole drilling apparatus using screw casings and an earth anchor method using same, in ...  

Matches 351 - 400 out of 13,839