Abstract: Provided is an automated drilling arrangement comprising a platform, a drill pipe loading assembly arranged on the platform and including a cradle for receiving a drill pipe section, and a handler assembly configured automatically to displace and orientate said drill pipe section from the cradle into an upright position for engagement with a drill string. Arrangement also includes a drilling mast arranged on the platform and comprising a rotary head drive displaceable along the mast to effect drilling, and a drill pipe manipulator configured automatically to receive, align and connect said section of drill pipe from the handler assembly with a drill string of the rotary head drive to facilitate automated drilling by the automated drilling arrangement.

Abstract: A drill bit may include a bit body having a bit axis about which the bit body is configured to rotate in a rotational direction. A drill bit may include a roller cone connected to the bit body and having a cone axis around which the roller cone is configured to rotate, the roller cone having a plurality of cutting inserts positioned in a surface of the roller cone, wherein the plurality of cutting inserts form a rolling cutting profile when rotated in around the cone axis. A drill bit may include a blade having a plurality of fixed cutting elements coupled thereto, wherein the plurality of fixed cutting elements define a fixed cutting profile, wherein the rolling cutting profile has an exposure above the fixed cutting profile and the exposure increases in a bit radial direction away from the bit axis.

Abstract: An apparatus having a unit that is attachable to a mounting platform, which has a first longitudinal axis. The mounting platform can include a base defining a first coupling feature. A latch can be movably coupled to the base about and between a secured position and a release position, the latch defining a first retention feature. The unit can have a second longitudinal axis and a second coupling feature that extends along the second longitudinal axis. The second coupling feature can be configured for engagement with the first coupling feature by movement of the second coupling feature relative to the first coupling feature along the first longitudinal axis. Engagement between the first and second coupling features can be configured to inhibit movement of the second coupling feature relative to the first coupling feature along an axis that is perpendicular to the first longitudinal axis.

Abstract: A closure arrangement for use on a rotating control device used during managed pressure drilling, said closure arrangement adapted for the installation of a bearing assembly adapted for insertion into a body, said body defining an upper circular opening and comprising an outer circumferential edge, said closure arrangement comprising: a closure collet comprising: a top section comprising an outwardly protruding shoulder and an inwardly protruding shoulder; and a plurality of spaced apart fingers extending downwardly therefrom forming a middle section and a bottom section of said collet; said fingers adapted to securely and removably fit around said outer circumferential edge of said body; and a collet lock ring adapted to slidingly move between a first position defined by the middle section of the closure collet and a second position proximate the bottom section of the closure collet; wherein, when the closure arrangement is in use, the bearing assembly is securely inserted into said body and the collet

Abstract: A remote hydraulic system for controlling a valve of a wellhead or frac manifold includes a remote hydraulic skid, control skid, and power supply skid. The remote hydraulic skid includes a hydraulic reservoir, a hydraulic pump, an accumulator, a hydraulic manifold operatively coupled to the accumulator, and a hydraulic valve operatively coupled to the hydraulic manifold. The hydraulic valve is operatively coupled to the valve of the wellhead or frac manifold by a hydraulic line. The control skid includes an interface and is operatively coupled to the remote hydraulic skid. The power supply skid is coupled to the remote hydraulic skid to provide the power necessary to drive the hydraulic pump on the remote hydraulic skid. The remote hydraulic skid is positioned within a hazardous zone around the wellhead, while the control skid and power supply skid are positioned outside of the hazardous zone.

Abstract: A device may include a body having a longitudinal axis. A device may include a deployable steering pad radially movable relative to the body, wherein the deployable steering pad has a retracted state defining a retracted radius from the longitudinal axis and a deployed state defining a deployed radius from the longitudinal axis. A device may include a kicker plate connected to the body longitudinally adjacent to the deployable steering pad, wherein the kicker plate has a kicker radius from the longitudinal axis greater than the retracted radius. A device may include a cutting element positioned on the kicker plate and defining a cutting radius between the retracted radius and the deployed radius.

Abstract: A method including drilling a wellbore using a drill bit connected to a drill string. The drill string includes a vibrational energy harvester and a tool disposed inside a casing of the drill string. The vibrational energy harvester includes a stator including a conductive coil, and a rotor including magnets disposed outside the conductive coil. The rotor is unpowered. The rotor is free to rotate outside the conductive coil, and the rotor is unattached to other components of the drill string. The method also includes generating vibrations in the drill string by engaging the drill bit to a bottom of the wellbore. The method also includes harvesting electricity generated in the stator as the rotor rotates in response to the vibrations. The method also includes supplying, via an electrical connection between the stator and the tool, the electricity to the tool.

Abstract: A compression indication tool can include a flow passage and a valve that in a closed configuration prevents fluid communication between the flow passage and an exterior of the tool, and in an open configuration permits fluid communication between the flow passage and the exterior of the tool. The valve is opened in response to application of a predetermined longitudinal compressive load to the compression indication tool. A method can include connecting a compression indication tool in a tool string, the tool including a valve that prevents fluid communication between an interior flow passage and an exterior of the tool, deploying the tool string into the well, and applying a predetermined longitudinal compressive load to the tool string, thereby opening the valve to permit fluid communication between the interior flow passage and the exterior of the tool.

Abstract: A screw pile driving apparatus is supported on the boom of a work vehicle. A mast of the apparatus is adjustable relative to the work vehicle. A carriage slidable along the mast carries a rotary driver that releasably mounts the screw pile thereon. The bottom end of the mast includes an element penetrated into the ground and an adjustment mechanism that allows repositioning of the mast relative to that element prior to leveling of the mast and driving the pile into the ground as the carriage is displaced along the mast. The mast and carriage guide the rotary driver as a screw pile is penetrated into the ground to maintain the screw pile vertical. Allowing adjustment of the bottom of the mast relative to the ground also allows the mast to be precisely located relative to the target location for the pile before the pile is penetrated into the ground.

Abstract: A method may include receiving a digital well plan that specifies planned drilling parameters for drilling a borehole, where each of the specified planned drilling parameters includes one or more of a minimum threshold and a maximum threshold; generating statistical distributions of actual drilling parameters in real-time responsive to receipt of real-time data acquired during a depth-based window for the drilling; generating comparisons in real-time, where each of the comparisons is between one of the statistical distributions and a corresponding one of the planned drilling parameters for the depth-based window; and, responsive to one or more of the comparisons indicating an unacceptable actual to planned parameter deviation, issuing a control signal.

Abstract: A down-the-hole hammer includes a barrel having a longitudinal axis and defining a proximal chamber and a distal chamber, a piston slidable within the barrel between the proximal chamber and the distal chamber, and a flow control valve including a valve member slidable within the barrel along the longitudinal axis to control airflow through the piston. In a first position of the valve member, the valve member allows air flow from a proximal end of the barrel through the piston and into the distal chamber. In a second position of the valve member, the valve member allows air flow around the valve member and into the proximal chamber.

Abstract: Systems, apparatus, articles of manufacture, and methods for rotary bearing maintenance are disclosed. An example apparatus includes a valve body defining a fluid passageway; a flow control member in the fluid passageway; a drive shaft coupled to the flow control member, the drive shaft extending through a shaft bore defined in the valve body; and a bearing around at least a portion of the drive shaft. The bearing includes: a first layer including a first material having a first coefficient of friction with the drive shaft when the first material is in contact with the drive shaft; and a second layer including a second material having a second coefficient of friction with the drive shaft when the second material is in contact with the drive shaft, the second coefficient of friction greater than the first coefficient of friction.

Abstract: A control system, rock drilling rig and method for controlling coupling measures is provided. The control system is arranged for controlling coupling and uncoupling measures of a threaded coupling of a rock drilling tool. The control system is configured to detect initial minimum feed force required for moving a rock drilling apparatus in forward direction and is configured to implement the detected minimum feed force during the coupling.

Abstract: Systems and methods of forming a seal employ a robust metal sealing unit for tubulars used in rotary drilling. Specifically, eutectic alloy is used to seal a tubular to a wellbore after drilling. A downhole heater melts the alloy, allowing the alloy to expand and drain before it cools and solidifies between the wellbore and tubular, forming a gas tight seal.

Abstract: A method of treating a cemented carbide insert for rock drilling and mineral cutting is provided. The insert includes a core of cemented carbide and a surface zone of cemented carbide, wherein the core further contains eta-phase and the surface zone is free of eta-phase. The mining insert is subjected to a surface hardening process, wherein the surface hardening process is executed at an elevated temperature of or above 50° C.

Abstract: A method of redistributing the binder phase of a cemented carbide mining insert having a WC hard-phase component, optionally one or more further hard-phase components and a binder includes the steps of providing a green cemented carbide mining insert; applying at least one binder puller selected from a metal oxide or a metal carbonate to only at least one local area of the surface of the green cemented carbide insert; sintering the green carbide mining insert to form a sintered cemented carbide insert; and subjecting the sintered cemented carbide insert to dry tumbling process executed at an elevated temperature of or above 100° C., preferably at a temperature of or above 200° C., more preferably at a temperature of between 200° C. and 450° C.

Abstract: A down-the-hole drill hammer comprising a casing having externally threaded distal end, and a chuck having internal threads threadedly connectable to the distal end of the casing. The down-the-hole drill hammer further comprising a drill bit having a head and a shank extending proximally from the head, and a bit retaining ring between the casing and the chuck for releasably retaining the drill bit.

Abstract: A downhole cleaning tool (120) for use in a drilled bore, such as an oil and gas well (100). The tool (120) comprises a tubular body (130) defining an internal bore (136) and at least one radially extending blade (148) defining a pocket (152) having sides and a base. A cam-activated radially extendable cleaning element (154) is mounted in the pocket (152) and is movable between a retracted position and an extended position. Multiple pockets (152) and cleaning elements (154) may be provided. The activating cam may be in the form of a pipe, which may be a single unitary part or may be in multiple parts. The parts of the multiple-part pipe may be axially spaced and may activate the cleaning elements in a staggered or sequential manner.

Abstract: A drill bit includes cutting elements and a displacement sensor deployed on a drill bit body. The displacement sensor includes an engagement piston disposed to translate axially in a sensor housing. The engagement piston includes an inner plunger and an opposing outer engagement element configured to engage a subterranean formation and is biased outward from the sensor housing. The displacement sensor further includes a position sensor configured to sense an axial position of the engagement piston in the sensor housing. An electronic controller is configured to determine a measured displacement from the sensed axial position of the engagement piston. The displacement sensor may enable depth of cut and rate of penetration measurements to be made while drilling.

Abstract: A method includes drilling a wellbore and deploying a logging string including a jet nozzle and an anchor in the wellbore. The method includes hydraulically coupling a jetting treatment system including a mud treatment system to a mud circulation system, hydraulically coupling a drilling mud including wellbore fluids to the mud circulation system, and hydraulically coupling the mud circulation system to a drill string bore of the drill string. The method includes activating the jetting treatment system to circulate the drilling mud in the mud treatment system. The method includes circulating in the wellbore, using the jetting treatment system, a treatment mud, disposed in the mud treatment system, wherein the treatment mud is configured for treating the wellbore fluids. The method includes logging the well using the logging string, and treating the wellbore fluids using the treatment mud to form treated wellbore fluids.

Abstract: Techniques for controlling lost circulation while drilling include while drilling a wellbore, encountering a high-loss circulation zone by a bottomhole assembly; responsive to encountering the high-loss circulation zone, releasing a first lost circulation media retained within the bottomhole assembly; and receiving a second lost circulation media, by the bottomhole assembly, from circulation fluid circulated from a topside facility.

Abstract: A system and method include a dart deployment sub coupled to a drill string including a data receiver, a transmission device, and a data transmission cable, a downhole data collection sub coupled downhole from the dart deployment sub including an instrumentation package capable of acquiring parameter data regarding a location in the wellbore, and a dart disposed inside the dart deployment sub coupled to the data transmission cable configured to receive acquired parameter data from the downhole data collection sub. The dart is configured to depart from the dart deployment sub and land in the downhole data collection sub, wherein the data receiver is configured to receive parameter data from the dart via the data transmission cable. The system further includes a surface collection device coupled to the transmission device configured to transmit parameter data from the dart deployment sub to the surface collection device.

Abstract: An example control system includes a hydraulic pump disposed in a wellbore, a valve bank disposed in the wellbore, and an unpressurized hydraulic fluid reservoir. The hydraulic pump is fluidically connected with the valve bank. The valve bank is fluidically connected with the unpressurized hydraulic fluid reservoir. The unpressurized hydraulic fluid reservoir is fluidically connected with the hydraulic pump. The control system is configured to flow pressurized hydraulic fluid exiting from the hydraulic pump to the valve bank to be distributed from the valve bank to the wellbore equipment.

Abstract: An apparatus, drilling arrangement and method for high voltage electro pulse drilling of rock. The apparatus includes a switch having two electrodes spaced at a distance from each other. The switch is located in connection with a drilling tool. The switch may be surrounded by a chamber, which prevents flushing fluid entering between a switch gap of the electrodes.

Abstract: A bit may include a matrix portion, the matrix portion exposed at a cone region and a nose region of the bit. A bit may include a steel portion, the steel portion including a bit connection, the steel portion exposed at a gauge region of the bit. A bit may include a plurality of cutting elements secured to the matrix portion at the cone region and the nose region.

Abstract: A reamer for use in enlarging a borehole in a drilling operation, the reamer comprising: an elongate body defining a rotational axis about which the reamer is rotated in the drilling operation; and a plurality of reamer blocks configured to extend radially outwards from the elongate body relative to the rotational axis, wherein: each reamer block comprises at least a first row of cutters configured to engage a formation in which the borehole is being drilled with a given back rake in the drilling operation, a given portion of each first row extending longitudinally along its reamer block, a longitudinal direction being substantially parallel to the rotational axis; each back rake of said cutters is either a high back rake or a low back rake; and for at least one first row of cutters, the respective back rakes of the cutters alternate along the given portion of the row between one or more high back rakes and one or more low back rakes.

Abstract: A rotary drill bit for use with a horizontal directional drill string. A coupler at a proximal axial end is configured to attach the rotary drill bit to a drill head at a distal end of the drill string. A cutting portion at a distal axial end is provided with a plurality of vanes with respective cutters that operate to cut a hole in earth when the rotary drill bit is rotated about a central axis. The plurality of vanes project radially outwardly from a surface of the cutting portion such that the surface forms respective troughs circumferentially interspersed with the plurality of vanes. A plurality of engagement features is positioned axially within the cutting portion and radially inward of an outer cutting diameter to facilitate attachment of a product pullback device between the plurality of vanes without removing the rotary drill bit, or any portion thereof, from the drill head.

Abstract: Systems and methods for performing an intervention operation in a wellbore using a friction reducer fluid include a coiled tubing insertable into the wellbore, a pump operable to pump the friction reducer fluid through the coiled tubing and into the wellbore, and sensors operable to detect wellbore conditions. A controller including a processor is operable to automatically predict a wellbore depth at which the coiled tubing will incur a lock-up in the future based on the wellbore conditions and control the pump to pump the friction reducer fluid though the coiled tubing and into the wellbore to prevent the future lock-up.

Abstract: The multi-directional force modulation cartridge system has a modular relationship the drill bit so that the cutting profile of a cutter in the drill bit can be adjusted without requiring modification of the drill bit itself. The force modulation cartridge system includes a cutter and a cartridge. The cutter can be independently replaced due to wear or replaced when the cartridge is replaced. The cartridge includes a holder, a seat, and a cartridge force member. The cartridge can have different holders and seats adjusted for different formations and drilling conditions. The alignment of the holder and the seat is set by a holder sliding angle and a seat sliding angle with the holder sliding surface and the seat sliding surface being parallel and in sliding engagement. A seat post supports the cartridge force member to exert a restoring force according to the holder sliding angle and the seat sliding angle.

Abstract: Methods and systems are provided for designing and determining a well service in the presence of loss, including the volume, rates, and duration of pumping of fluids in the presence of losses. A method of designing services for wellbores includes calibrating a loss circulation model with input comprising wellbore state to update the loss circulation model with formation loss zone characteristics; applying the loss circulation model to output at least a prediction of loss rate; and designing a wellbore service at least partially based on the prediction of the loss rate.

Abstract: Aspects of the subject technology relate to systems and methods for determining positions of fluids during a cementing process in real-time. Systems and methods are provided for receiving one or more sensing parameters from a distributed acoustic sensing fiber optic line positioned in a wellbore during a cementing process, determining types of fluid proximate to the wellbore based on the one or more sensing parameters received from the distributed acoustic sensing fiber optic line, determining pressure gradients of the types of fluid based on the one or more sensing parameters received from the distributed acoustic sensing fiber optic line, and compiling flow profiles for the types of fluid proximate to the wellbore based on at least one of the determining of the types of fluid and the determining of the pressure gradients of the types of fluid.

Abstract: A friction reduction tool and assembly are selectively activatable to produce fluid pressure pulses in downhole operations. The assembly includes a variable choke assembly having a rotary component and a stationary component, each with passages that enter into and out of alignment when the rotary component rotates with respect to the stationary component when driven by a rotor. The rotary component, stationary component, and rotor each have a central bore defining a central passage permitting fluid flow from above the assembly to below the assembly.

Abstract: Described is a system for milling past wellbore restrictions. The system includes multiple components axially connected to form a bottom hole assembly (BHA). The BHA includes an external coil connector, a motor head assembly (MHA), a metal-to-metal (MTM) motor, a bypass circulation valve (BCV), and a mill component.

Abstract: An operating system, rock drilling rig and method for operating an electrically operated rock drilling rig. The operating system includes an electric system connected to an electric supply source and having one or more electric motors controlled by electric control devices. The system further includes a hydraulic system having one or more hydraulic pumps and hydraulic control devices. There are hydraulic tramming actuators connected to closed loop hydraulic circuits and hydraulic drilling actuators connected to either open or closed loop circuits.

Abstract: An activation control module utilizes gravity and/or centrifugal acceleration to move a mechanical element that controls, activates or deactivates a mechanical or hydraulic mechanism, for use with a downhole tool such as a drilling tool or reamer in a wellbore. In embodiments, the activation control module described herein may utilize a combination of centrifugal acceleration and/or gravity due to an inclination of the downhole tool to move a valve, which turns off pressure to a hydro-mechanical system. The activation control modules may be utilized in applications where very little space is available for larger mechanisms. Further, the activation control modules do not require expensive and complex electro-mechanical systems, reducing or eliminating the need for batteries, wiring, electronics, motors, pumps and the like. Moreover, the activation control modules described herein do not require the use of a turbine, a centrifugal clutch or a linear actuator.

Abstract: A spindle with a mechanism for transferring axial force from an inner drive assembly to an outer drive assembly. The spindle's inner drive shaft is connected to an inner member of a dual-rod pipe by a drive rod having a sliding sleeve. The sleeve is fixed rotationally with the drive shaft, but not axially. When axial force drives the drive rod toward the drive member of the spindle, the sleeve contacts a stop member which is paired to the outer drive assembly. The stop member may be a pair of dowel pins. Axial force is thereby transferred from the inner member to the outer member, allowing such forces to be absorbed by the outer member's larger drive components.

Abstract: The present invention relates to a downhole valve device for providing access to a hydrocarbon reservoir, comprising a tubular element having a wall, an inner face and an outer face, the tubular element having a first through-bore and a plurality of second through-bores in the wall extending from the inner face to the outer face, and a sleeve abutting the inner face and being displaceable along the inner face between a first state in which the sleeve covers the first and second through-bores and a second state in which the sleeve uncovers the first and second through-bores, wherein a burst element is arranged in the first through-bore and an acid-dissolvable plug is arranged in each second through-bore. Moreover, the present invention also relates to a downhole completion system for completing a well in low pressure zone and a downhole completion method for completing a well.

Abstract: An automated system (100) and method for removing and installing drill bits or tricone bits that is safe, with low energy consumption and adaptable to existing drilling systems (1) and break-out wrenches (2), comprising: a base structure (101) that is attached to the drilling system (1); a mobile table (102) that moves on a base structure (101) for replacing tricone bits (103); a handling system (104) located on the base structure (101) for moving the tricone bits (103) from the mobile table (102) to the drilling system (1); control (200) that define the movement and synchronise the mobile table (102), the handling system (104) and the break-out wrench (2); and sensors, that supply data to the control means (200) on the location of the mobile table (102), the handling system (104), the hoisting claw (105) and the break-out wrench (2).

Abstract: A drilling device for geotechnical engineering investigation is provided, including an outer supporting ring seat, where a center of the outer supporting ring seat is rotatably connected with a middle supporting ring seat through a first supporting shaft rod; a center of the middle supporting ring seat is rotatably connected with an inner supporting ring seat through a second supporting shaft rod; the first supporting shaft rod and the second supporting shaft rod are vertically crossed; a second rotating motor is fixedly installed at one end of the first supporting shaft rod on an outer surface of the outer supporting ring seat; a pow output end of the second rotating motor is fixedly connected with the first supporting shaft rod, an other end of the first supporting shaft rod is provided with a first locking mechanism for position limitation.

Abstract: Provided is a keyed running tool for use with a slotted orientation apparatus. The keyed running tool, in one aspect, includes a housing, and two or more keys extending from the housing, the two or more keys movable between a radially retracted state and a radially extended state, wherein adjacent ones of the two or more keys are laterally offset from each other and radially offset from each other by Y degrees, wherein Y is 180 degrees or less.

Abstract: The invention relates to a rotary device (101) for a down-the-hole hammer (1), which rotary device is accommodated in a rotation motor housing (3) and mounted behind a drill housing (2) for transferring a torque to a drill bit (8) and a pressurized drive fluid (22) to a striking mechanism (4) for the drill bit. The rotary device includes a cam curve with a plurality of drive lobes (28:1-28:3) and working chambers (30:1, 30:2, 30:3) along a circumference in the rotation motor housing (3), a rotor disc (38) carrying a plurality of radially movable vanes (40:1-40:12), which are accommodated in piston tracks (41:1-41:12) in the rotor disc.

Abstract: The invention relates to a civil engineering device with an undercarriage with a crawler chassis, an upper carriage, which is arranged on the undercarriage, and a mast, which is mounted vertically oriented on the upper carriage. According to the invention it is provided that arranged on an upper area of the mast is at least one camera, by which an image of the civil engineering device and its surroundings can be recorded.

Abstract: A cutter element for a drill bit includes a base portion having a central axis, a first end, and a second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion. The cutting face includes a first planar surface and a second planar surface that is circumferentially-spaced from the first planar surface. Each planar surface is positioned at an outer periphery of the cutting face adjacent the radially outer surface of the cutting layer. The cutting face also includes a saddle surface including a crown and a pair of lateral side surfaces that slope down and away from the crown toward the radially outer cylindrical surface of the cutting layer. The crown extends from the first planar surface to the second planar surface.

Abstract: A sequestration injection valve including a housing, a flow valve disposed in the housing, an injector assembly, the assembly having a ported inner sleeve and a ported outer sleeve, the inner sleeve and outer sleeve moveable relative to one another to more align or more misalign the ports in the inner sleeve and outer sleeve. A method for injecting sequestration fluid into a borehole including applying pressure to a flow valve in an injection valve, moving an inner sleeve of an injector assembly with the pressure, and automatically maintaining pressure differential at the injector assembly. A borehole system including a borehole in a subsurface formation, a string in the borehole, and a sequestration injection valve disposed within or as a part of the string.

Abstract: A coordinated control method for electric vehicles having independent four-wheel driving and steering, comprising the steps of: calculating to obtain a desired value of yaw velocity according to the steering angle and the current vehicle driving speed, and limiting the desired value of yaw velocity according to the current road adhesion condition; constructing an optimization problem according to the current vehicle motion state and the desired value of yaw velocity, and solving the optimization problem to obtain a desired active rear wheel steering angle control variable and a desired additional yaw moment control variable; calculating to obtain an additional torque of each wheel according to a desired additional yaw moment control variable, obtaining a desired active rear wheel steering angle, and sending the additional torque of each wheel and the desired active rear wheel steering angle to an executor of the vehicle for performing a coordinated control.

Abstract: An open hole tieback completion pressure activated backpressure valve including a housing, a flapper articulated to the housing, a lock out sleeve axially movably disposed within the housing and operatively disposed in relation to the flapper, a seat operatively connected to the sleeve, and a profile that locks the sleeve in place after axial movement of the sleeve. A borehole system including an intervention-less closed lower completion system having delayed opening activation valves with a wellbore isolation valve uphole of a float shoe, and a casing tie-back completion including the valve. A method for completing an open hole including landing an object on a seat of an open hole tieback completion pressure activated backpressure valve, locking out the valve, releasing the object, and landing the same object on a well isolation valve of a lower completion.

Abstract: A downhole cleaning tool (120) for use in a drilled bore, such as an oil and gas well (100). The tool (120) comprises a tubular body (130) defining an internal bore (136) and at least one radially extending blade (148) defining a pocket (152) having sides and a base. A cam-activated radially extendable cleaning element (154) is mounted in the pocket (152) and is movable between a retracted position and an extended position. Multiple pockets (152) and cleaning elements (154) may be provided. The activating cam may be in the form of a pipe, which may be a single unitary part or may be in multiple parts. The parts of the multiple-part pipe may be axially spaced and may activate the cleaning elements in a staggered or sequential manner.

Abstract: In a blowout preventer body having a central bore a method of reducing the size and weight of the blowout preventer body while maintaining an acceptable stress level at working pressure comprising machining a portion of the blowout preventer body to proximate the final dimensions, pressuring the blowout preventer body to a higher pressure than the working pressure of the blowout preventer body to yield high stress areas of the blowout preventer body, and relieving the higher pressure from the blowout preventer body such that when the blowout preventer body returns to the non-pressured state the high stress areas will retain compressive stresses and when the blowout preventer body is then pressurized to the working pressure of the blowout preventer body the stresses will be at an acceptable stress level.

Abstract: The disclosure presents processes to determine the direction and magnitude of tubing eccentricity along the length of a tube inserted within a borehole. The tubing can be a wireline, a drill string, a drill pipe, or tubing capable of allowing fluid or other material to flow through it. As borehole operations proceed, the tubing can move toward the side of the borehole. This eccentricity can cause excess wear and tear on the tubing, on the casing of the borehole, or on the inner surface of the subterranean formation. The eccentricity can be measured using acoustic signals that are collected downhole covering the azimuthal angles 0° to 360° at a location in the borehole. The collected signals can be filtered, transformed, and analyzed to estimate the tubing eccentricity. Other processes and systems can use the results to obtain cement bond evaluations through tubing and to determine preventative or restorative actions.

Abstract: Systems, methods, and computer-readable media for an integrated and comprehensive hydraulic, environmental, and mechanical tubular design analysis workflow and simulator for complex well trajectories. An example method can include obtaining data defining a configuration of a wellbore having a complex well trajectory, one or more operations to be performed at the wellbore, and one or more loads associated with the wellbore; calculating environmental conditions associated with a set of wellbore components along the complex well trajectory based on the data defining the configuration of the wellbore, the one or more operations, and the one or more loads; calculating stress conditions associated with the set of wellbore components based on the environmental conditions and the data defining the configuration of the wellbore, the one or more operations, and the one or more loads; and presenting the environmental conditions and the stress conditions via a graphical user interface.