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Patent Searching and Data


Matches 1,151 - 1,200 out of 13,867

Document Document Title
WO/2015/100484A1
A method and apparatus for directional drilling using mechanical wave detectors and a drill string having a drill bit at a drill bit end of the drill string. During an underground drilling operation in an underground formation, a mechani...  
WO/2015/103511A1
A hydraulic tool includes a stator and a rotor rotatably disposed within the stator. At least one of at least an inner portion of the stator and at least an outer portion of the rotor includes an insert comprising a hard material. A meth...  
WO/2015/102600A1
A wellbore assembly is provided that can include a first motor housing assembly member and a second motor housing assembly member that can bend relative to the first motor housing assembly at a bend location. The assembly can also includ...  
WO/2015/103340A1
A well intervention semisubmersible vessel and method including a drilling rig further including a non-elevated derrick floor and a handling tower having a single point land out without riser tensioners. The vessel may also include a flu...  
WO/2015/103213A1
A drill bit for forming a hole in a formation. The drill bit has a shank and an annular crown that cooperate to define an interior space that receives water or other drilling fluid. The annular crown defines inner channels spaced circumf...  
WO/2015/102599A1
A wellbore assembly is provided that can include a first motor housing assembly member and a second motor housing assembly member that can bend relative to the first motor housing assembly at a bend location. The assembly can also includ...  
WO/2015/102596A1
An example downhole apparatus includes a drive shaft with a longitudinal axis, a spherical portion that extends radially from the longitudinal axis, and first and second interfacial surfaces proximate the spherical portion. An outer hous...  
WO/2015/102584A1
A directional drilling steering system is configured to direct a tubular sleeve arranged at the bottom of a drill string adjacent the drill bit at a selected tilt angle with respect to the longitudinal axis of the uphole drill string and...  
WO/2015/099903A1
An underreamer for increasing the diameter of a bore. The underreamer includes a substantially cylindrical body. A mandrel may extend axially through the body. One or more cutter blocks are movably coupled to the body. A ratio of a heigh...  
WO/2015/099800A1
A method of amplifying a data-encoded acoustic signal in an oil or gas well system comprising: performing at least a first transmission of the data-encoded acoustic signal from a transmitter towards a receiver, wherein at least some of t...  
WO/2015/099655A1
A method of operating a drill string comprises independently modifying a rotary speed of a downhole portion of the drill string relative to other downhole portions of the drill string, each of the portions comprising a plurality of drill...  
WO/2015/099652A1
A downhole tool having a mechanically adjustable bend angle from the surface and method for actuation of the tool. The tool includes a knuckled joint between upper and lower housing assemblies and tapered setting ring upon which the lowe...  
WO/2015/096894A1
The invention relates to a boring and laying device for trenchless pipe laying, comprising a boring head for loosening the rock, said boring head having a connection for a pilot bore linkage; a pump for suctioning and discharging debris ...  
WO/2014/110523A3
A method of controlling fluid flow between two tubulars (110, 120) includes disposing a sealing member (130) in an annular area between two tubulars; moving the sealing member to a lower position where it is not in contact with one of th...  
WO/2015/094194A1
An optical waveguide pumping method can include pumping a liquid fluid through a conduit, thereby pumping an optical waveguide into the conduit, and operating a fluid recovery device, so that fluid pressure in the conduit is less than a ...  
WO/2015/089937A1
A well-drilling thruster. Same comprises, arranged at the rear extremity part, an electro-hydraulic composite pipe (11), an actuator used for driving the well-drilling thruster forward, and, sequentially fitted and connected, a drive mot...  
WO/2015/052075A4
A driving apparatus (2) for driving pipes (4) into the sea bed is disclosed. The driving apparatus has support arms (20) supporting a drill tower (16) for driving pipes into the sea bed, and a body (6) for supporting a plurality of pipes...  
WO/2015/094202A1
A wellbore ranging system and method utilized between first and second wellbores includes an electromagnetic field sensing instrument disposed in the second wellbore, a conductive casing in the first wellbore, an electric current source ...  
WO/2015/090362A1
The invention relates to an arrangement and method of utilizing rock drilling information in a mine. Drill holes are drilled to a surrounding rock material (20) by means of a first mining vehicle (1). During drilling measuring data is pr...  
WO/2015/089620A1
In an apparatus having a housing, a housing bore, and a shaft rotatably extending through the housing bore, a rotary seal assembly which includes a seal carrier retainer connected with the housing and defining a cavity surrounding the sh...  
WO/2015/088964A1
A method for defining a permissible borehole curvature includes determining curvature characteristics of at least one of a borehole and a downhole assembly in the borehole and calculating an envelope of permissible borehole curvatures fr...  
WO/2015/056218A3
A process for constructing a well (1) for exploiting an oil or gas reservoir, comprising the following operations: (A) drilling a formation submerged by a water head, at least 3, 600 meters deep or more, reaching the formation from the s...  
WO/2015/088469A1
Disclosed are expandable bullnose assemblies. One bullnose assembly includes a body and a bullnose tip arranged at a distal end of the body, a compression ring arranged about an exterior of the body and configured to axially translate wi...  
WO/2015/085359A1
A drill rig is provided, The drill rig includes a frame and a pair of cylinder rods provided laterally spaced relative to each other. The pair of cylinder rods is configured to extend and retract relative to the frame along an axial dire...  
WO/2015/088633A1
This application is directed to a pressure balanced mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a passageway disposed in the passageway housing. The mud motor also includes a ...  
WO/2015/089458A1
A laser cutting apparatus operable in a wellbore to form radial slots in a subterranean formation penetrated by the wellbore and a casing lining at least a portion of the wellbore. The laser cutting apparatus includes a housing, a deflec...  
WO/2015/084974A1
The cutting structure on the lower mill is arrayed in rows that are preferably parallel. The cutting structure in each row is made sharper and more durable than prior designs with the objective of cutting the window higher than where the...  
WO/2014/195495A3
A method of locating a drilling apparatus and/or a borehole in a subterranean region, comprising the steps of: (A) transmitting seismic waves into the subterranean region during a subterranean drilling operation, the seismic waves being ...  
WO/2015/081957A1
Disclosed is a directional drilling arrangement comprising a drill head (2) arranged at the end of a drill string (3),wherein the drill head (2) includes direction means (4) for directing the directional drilling arrangement in a specifi...  
WO/2015/085288A1
An expandable reamer for a borehole has a plurality of support elements (202) distributed around a central axis of the tool with cutters (234, 236) and stabilising pads (250) on the support elements, arranged such that at least one of th...  
WO/2015/081432A1
A downhole tool assembly for use in a drilling string includes a motor, a flow head, and a flow restrictor. The flow head is coupled to the motor and comprises a plurality of ports permitting fluid communication therethrough. The flow re...  
WO/2015/085200A1
Systems and methods for using propellant as a force generator in component actuation are disclosed. One embodiment may take the form of a method including deploying at least one component to a subsea location, controlling operation of th...  
WO/2015/081398A1
The invention relates to a method for drilling oil wells in the seabed in a single phase of operation, using a valve and line arrangement (LV) to allow the implementation and mounting of an entire drilling assembly (CP) at the sea surfac...  
WO/2014/183933A3
Drill rod gripping apparatus (106) to grip and impart rotational motion to a drill rod (115). A sled (206) is axially mounted at a frame (205) and comprises first and second jaws (301, 302) moveably mounted at the sled to allow a substan...  
WO/2015/081059A1
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 assembly coupled to the drill string above th...  
WO/2015/054055A3
A downhole intelligent reamer controller detects the difference between rotary drilling and sliding drilling, responds appropriately and quickly to multiple changes between rotary drilling and sliding drilling that may occur several time...  
WO/2015/081123A1
The present disclosure is directed to a downhole bypass tool that includes an inlet for receiving fluid into a housing of the bypass tool. The bypass tool also includes a flow directing apparatus disposed in the housing for directing flu...  
WO/2015/077494A1
A drill bit for forming a hole in a formation. The drill bit has a shank and a full face crown that cooperate to define an interior space that receives water or other drilling fluid. The full face crown defines a plurality of bores that ...  
WO/2015/077413A1
A drill bit for forming a hole in a formation. The drill bit has a shank and a full face crown that cooperate to define an interior space that receives water or other drilling fluid. The full face crown defines a plurality of bores that ...  
WO/2015/077716A1
The disclosure of this application is directed to a downhole tool comprising a central element/member and a sleeve that is rotatably and orbitally disposed around the central element/member. The sleeve rotates and orbits around the centr...  
WO/2015/077678A1
Methods and apparatus are disclosed concerning an injector apparatus, comprising: an upper injector coupled to a frame, wherein the upper injector has an upper injector passage; a lower injector coupled the frame, wherein the lower injec...  
WO/2014/111104A3
The invention relates to a device for conveying away drillings removed by a drilling tool (113) during the creation of a drill hole (101, 102) for laying a pipeline, said device having at least one pump (12) for pumping away a drilling l...  
WO/2014/107232A9
A steerable drilling apparatus includes a control system (50) inside a cylindrical housing (10) connected to a drill bit having radially- extendable pistons (40). A fluid-metering assembly directs a piston- actuating fluid into fluid cha...  
WO/2015/073784A1
A pressure pulse generating tool may include an upper valve assembly disposed within the bore of a housing, where the upper valve assembly is configured to allow a fluid to flow through the upper valve assembly when in an open state. The...  
WO/2015/073002A1
A downhole depth, load and torque reference system. The system includes a well feature disposed within a wellbore tubular having a depth reference element, a load reference element and a torque reference element. A mating assembly is ope...  
WO/2015/072971A1
A drilling system is disclosed. The drilling system includes a drill string and a drill tool coupled to the drill string. The drill tool includes a cylindrical body. The drill tool further includes a plurality of blades on exterior porti...  
WO/2015/069269A1
A casing section comprising: a body comprising a wall; a window, wherein the window is an opening in the wall of the body; and a covering, wherein the covering: (A) is composed of a composite material; (B) is located on the outer surface...  
WO/2015/070133A1
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 the drive system has an associated bend ...  
WO/2015/066802A1
The present invention is a subsurface formation cutter and method for directional cutting into a subterranean formation. The subsurface formation cutter includes a transmission unit, a cutter bit, a bit brace, and a ram unit. The transmi...  
WO/2015/067131A1
A method for controlling impact energy of a rock drilling system according to the propulsive force, the method comprising the following steps: S1, if the propulsive force is less than or equal to a set lower limit A1, then the impact ene...  

Matches 1,151 - 1,200 out of 13,867