Abstract: A dissolvable connector allows a wireline or similar conveyance to be detached from a downhole tool or device based on conditions in a downhole environment instead of an external action, such as application of tension or an electrical pulse. The dissolvable connector can be strategically positioned to allow retrieval of expensive tools and equipment that are located above the connector. A protective sheath may be provided around the dissolvable connector that opens or unsheathes based on conditions in the downhole environment (e.g., pressure, temperature), a telemetry signal (e.g., from the surface or from a tool string), or tension, to provide greater control over the timing of the release of the dissolvable connector. Such a dissolvable connector allows the device to be detached from the conveyance without the need for wire-cutting operations or weak-point breaking operations.

Abstract: An assembly is used for chemical injection through a wellhead to a capillary line in a well. A capillary hanger installs in the wellhead to support the capillary line. A no-return valve of the capillary hanger prevents fluid communication uphole from the supported capillary line. An injection module mounts above a gate valve on the wellhead and includes a movable mandrel disposed therein. Hydraulic pressure applied to a piston chamber in the module extends the mandrel through the open gate valve so that a distal end of the mandrel can open the no-return valve. At this point, chemical injection introduced into the module can communicate through a flow bore of the extended mandrel, through the open non-return valve, and on through the supported capillary line in the well.

Abstract: A mechanical service tool that may include one or more anchors, a cutter, a communication and control system, and one or more sensors, as well as methods for operating the mechanical service tool, are provided. The one or more anchors may extend radially from the mechanical service tool and the cutter may move relative to the mechanical service tool. The cutter may include a drilling bit. The communication and control system may obtain remote commands that control the cutter, the one or more anchors, or both. The one or more sensors may detect operational conditions of the mechanical service tool and may be operatively coupled to the communication and control system.

Abstract: A casing string is augmented with one or more variable flow resistance devices or “vibrating tools” to facilitate advancement of the casing and distribution of the cement in the annulus once the casing is properly positioned. Vibrating tools in the form of plugs can be pumped down and landed inside the casing string. The method includes vibrating the casing string while advancing the casing down the wellbore or while the cement is pumped into the annulus, or both. After the cementing operation is completed, the devices may be drilled out or retrieved with fishing tools to reopen the casing string for further operations. One or more wipers may be provided on the plugs, but the section housing the flow path may be free of wipers to allow the size and flow capacity of the flow path to be optimized.

Abstract: Methods for traversing an expandable metal sealing element. An example method includes positioning an expandable metal sealing element in a wellbore; wherein the expandable metal sealing element includes a reactive metal and a void extending axially through at least a portion of the expandable metal sealing element. The method further includes disposing a line in the void and contacting the expandable metal sealing element with a fluid that reacts with the reactive metal to produce a reaction product having a volume greater than the reactive metal, wherein the reaction product seals around the line while it is disposed in the void.

Abstract: Displacements for use in forming at least a portion of a bit body of an earth-boring rotary drill bit may comprise a machineable material portion configured to form an integral machineable material portion of the bit body. Such displacements may optionally also include a sacrificial material portion. Bit bodies resulting from the use of such displacements may comprise a main body comprised of a particle-matrix composite material and a plurality of integral machineable material portions. Earth-boring rotary drill bits may include such bit bodies. Methods of manufacturing such bit bodies, and methods of manufacturing earth-boring rotary drill bits utilizing displacements are also disclosed.

Abstract: An actuation assembly positionable within a wellbore may comprise a primary piston coupled to a first spring. The primary piston may be positionable in a first position in which it is coupled to a release latch for restraining the release latch from actuating a ball valve mechanism. The actuation assembly may also include a locking piston coupled to a second spring and a locking mechanism positioned between the primary piston and the locking piston. The locking mechanism may be moveable between a restrained position and an unrestrained position, wherein in the restrained position the locking mechanism prevents the primary piston from moving a predetermined amount in a first direction in response to an application of pressure from a surface of the wellbore that is greater than a predetermined amount of pressure.

Abstract: Downhole tractor control systems and methods to adjust a load of a downhole motor to drive one or more wheels of the downhole tractor are disclosed. A method to adjust a load of a downhole motor includes receiving a user input of a desired speed and torque for a plurality of motors, where the plurality of motors powering rotation of wheels of a downhole tractor. The method also includes determining a minimum actual motor speed of the plurality of motors. For at least one motor of the plurality of motors, the method includes determining a power controller output and determining a torque controller output. The method further includes adjusting a voltage source invertor based on a lesser of the power controller output and the torque controller output to modulate voltage provided to the at least one motor.

Abstract: A system for fabricating an infiltrated downhole tool for introduction into a wellbore includes a mold assembly including a binder bowl, a mold, a preformed blank, and a funnel. The binder bowl has a lower portion and a plurality of apertures extending through the lower portion. The preformed blank is disposed within the infiltration chamber to provide an attachment area for a body of the infiltrated downhole tool, and the funnel is disposed intermediate the binder bowl and the mold. The system further includes a binder flow channel which extends through at least one of the preformed blank, the funnel, or a displacement core disposed within the mold assembly, the blank being concentrically arranged around the displacement core.

Abstract: The tall flange rubber adapter attaches to the inner barrel of a rotating head assembly. A rubber attaches to the tall flange rubber adapter. The rubber secured to the rubber adapter also rotates with the inner barrel thus maintaining the seal with the drill string to divert the drilling fluid from the well to the outlet flange. Fasteners install upward into the adapter and the inner barrel to secure the rubber adapter with the inner barrel. The increased height of the rubber adapter provides additional surface for the fastener to contact. The increased contact of the fastener with the tall flange maintains the fastener within the rubber adapter and the inner barrel to limit fasteners from falling downhole into the drilling area.

Abstract: A method and apparatus for casing recovery for well abandonment. A string is run-in, the string including a hydraulic jack (18), an anchor (28), a casing spear (20), a downhole flow pulsing device (22) and a pressure drop sub (24). The casing spear grips an upper end of the length of casing to be pulled. The anchor is set in casing of a greater diameter above the length of cut casing. Fluid pumped through the string and through the pressure drop sub will increase fluid pressure at the hydraulic jack to a first fluid pressure (78). Fluid pumped through the downhole flow pulsing device will vary the fluid flow superimposing a cyclic pressure (82) on the first pressure (78), causing oscillation of an inner mandrel (30) of the hydraulic jack. The jack moves the oscillating inner mandrel upwards relative to the anchor to pull the length of casing.

Abstract: A 3D printed barrel slip that includes a radially expandable barrel slip body that is movable from an unexpanded position to an expanded position; wherein the body has an outer surface that, when in the unexpanded position, defines a first radius; wherein the first radius is associated with a first curvature; and wherein, when in the expanded position, portion(s) of the outer surface has a second curvature that is less than the first radius. The body is an integrally formed single-component body that defines an external surface; and an internal chamber isolated from the external surface. The internal chambers affect the strength of portions of the body to control the timing of deployment of the barrel slip.

Abstract: A directional drilling system includes a housing and a motor positioned within the housing and operably coupled to a drill bit to rotate the drill bit. The system further includes a primary pad assembly comprising a primary pad and a primary actuator coupled to the primary pad to selectively extend from an exterior of the housing, and a backup pad assembly to back up the primary pad assembly, the backup pad assembly comprising a backup pad and a backup actuator coupled to the backup pad to selectively extend from the exterior of the housing.

Abstract: A directional drilling system that includes a drill bit capable of drilling a bore through rock. A shaft couples to the drill bit. The shaft transfers rotational power from a motor to the drill bit. A steering system controls a drilling direction of the drill bit. The steering system includes a sleeve coupled to the shaft. A steering pad couples to the sleeve. The steering pad forms a steering angle with the drill bit. Axial movement of the steering pad with respect to the drill bit changes the drilling direction by changing the steering angle.

Abstract: A drill bit comprises a bit body having a longitudinal axis and a blade extending radially outward from the longitudinal axis along a face region and axially along a gauge region. A gauge region includes a cutting element located proximate to an uphole edge of the blade in the gauge region. A remainder of the gauge region is free of cutting elements mounted thereon. A method of drilling a borehole comprises rotating the bit about the longitudinal axis, engaging a formation with cutting elements mounted to the face region, and increasing a lateral force applied substantially perpendicular to the longitudinal axis such that the cutting element engages the formation and such that side cutting exhibited by the tool is initially minimal and substantially constant and subsequently increases in a substantially linear manner with increasing lateral force.

Abstract: The invention provides a swivel tool for use in a wellbore. The tool comprises a tool body and a mandrel which is axially moveable relative to the tool body. The tool also comprises a lock member moveable between a first condition in which the mandrel is rotatably movable relative to tool body and a second condition in which the mandrel and a tool body are rotationally coupled. The lock member is configured to move between the first condition and second condition in response to a mechanical axial force and rotational force on the mandrel.

Abstract: An electric submersible pump used to pump fluids inside a borehole during operation is described. The electric submersible pump and its motor can be powered using an inductive power coupling. The electric submersible pump comprises a sealed extension that houses a pickup inductive coil assembly that is electrically coupled to a power source at a surface of the borehole. Power runs through the primary inductive coil assembly and the primary inductive coil is positioned relative to the pickup inductive coil assembly such that the electrical current flowing in the primary inductive coil assembly from the power source and through the power cable induces a voltage in the pickup inductive coil assembly.

Abstract: A core retrieving tool for retrieving a core sample of an underground formation includes a coring assembly having a coring bit, a core barrel within a core-receiving chamber, an expandable fluid chamber in fluid communication with the core-receiving chamber, and a valve that selectively seals the core-receiving chamber. The expandable fluid chamber is expandable in response to a pressure differential between the pressure of the core-receiving chamber and an external pressure. With the valve closed, the expandable fluid chamber is in open fluid communication with the core-receiving chamber such that a pressure of the expandable fluid chamber is equalized with the pressure of the core-receiving chamber.

Abstract: A stop collar includes an annular body and a gripping member. The body includes an outer surface and an inner surface. The body defines a window extending from the outer surface to the inner surface. A portion of the inner surface has a diameter that decreases proceeding toward an axial end of the body. The gripping member is positioned at least partially within the body and in contact with the inner surface. The gripping member is at least partially aligned with the window when the stop collar is in a first state. The gripping member moves toward the axial end of the body when the stop collar actuates into a second state. A diameter of the gripping member decreases as the gripping member moves toward the axial end of the body.

Abstract: A system for use with a subterranean well can include a system controller with a computer, a power supply and at least one current sensor, multiple downhole well tools, each of the downhole well tools including a motor and a member displaceable by the motor; and an umbilical connected between the system controller and the downhole well tools, at least one conductor of the umbilical being connected to the motor of each of the downhole well tools. A downhole well tool example can include an actuator assembly configured to displace a member of the downhole well tool, the actuator assembly including a motor, a load yoke displaceable by the motor, and an elongated position indicator bar having at least one profile formed thereon. Friction between the load yoke and the position indicator bar varies as the load yoke displaces relative to the position indicator bar.