Abstract: A bearing section for a positive displacement mud motor for directional drilling in which the deflection of the drill bit is remotely adjusted by bending the drive sub using an offset flex drive mechanism to adjust between desired settings. The bearing section is adjustable from the surface without the need for trips of the bottom hole assembly to the surface.

Abstract: A well tool for cementing a portion of a well includes a cement retainer assembly and a capsule connected to the cement retainer assembly. The cement retainer assembly is configured to be disposed within a wellbore, and includes a ported sub and a cement retainer. The ported sub includes a port to flow cement out of the cement retainer assembly and into an annulus of the wellbore. The capsule includes a body defining an interior chamber of the capsule, where the interior chamber is configured to retain a fluid, and the capsule is configured to be disposed at a location within the wellbore and downhole of the cement retainer assembly.

Abstract: A reaming device connects to downhole motor with paralleled driving structure. The downhole motor contains power section assembly, sleeve and connection pad. The power section assembly has a rotor and a stator in which the stator covers the rotor. The sleeve is located inside the rotor that drives the sleeve to make rotation. The connection pad is affixed to and rotates with the sleeve is disposed on the one end of the extended part of rotor from the bottom of sleeve. The reamer is set on the stator of power section assembly or on the cover connecting to the stator from power section assembly. The rotor drives the reamer to rotate with the stator or on the cover connecting to the stator through the sleeve and the connection pad.

Abstract: A valve includes a piston, a flow tube, and a coupling transferring longitudinal movement between the piston and flow tube and enabling rotational movement of the flow tube with respect to the piston. The coupling includes a connector and a thrust sleeve. The connector includes a piston attachment feature and a thrust sleeve attachment feature, the piston attachment feature attached to the piston. The thrust sleeve includes a pocket, the thrust sleeve attachment feature disposed within the pocket. The thrust sleeve includes portions disposed radially interiorly and radially exteriorly of the thrust sleeve attachment feature.

Abstract: A downhole tool having a flapper valve assembly for controlling the backflow of fluid into a tubing string that includes at least one flapper. The downhole tool also includes a deformable element that maintains the at least one flapper in an open position after the deformable portion is deformed. A downhole tool having a flapper valve assembly for controlling the backflow of fluid into a tubing string that includes at least one flapper. The downhole tool also includes a sleeve slidably disposed within at least a portion of the flapper valve assembly and the downhole tool. The downhole tool includes a deformable and dissolvable seat disposed uphole and adjacent to the sleeve and a dissolvable fluid blocking member to engage with the seat to shift the sleeve from first position to a second position within the downhole tool. Methods of using these downhole tools are provided.

Abstract: A valve assembly for drilling systems comprising a bidirectional valve (1) cooperating with a hydraulic clamping device (2) and being applied to a drilling machine for supplying a drilling fluid in two discrete directions, the valve assembly comprising a valve outer body adapted to be arranged between drilling rods while allowing said rod to be exchanged while keeping the mud continuously circulating.

Abstract: A wellbore anchoring assembly including a downhole device, a collar, and one or more deformable locking arms attached to the collar wherein the locking arms extend in a direction substantially along the longitudinal axis of the collar. The downhole device having a first component, the surface of the first component having a first protrusion. Each of the locking arms being deformable away from the longitudinal axis, one or more gripping protrusions extend out from an outer surface of the locking arms, and at least one second protrusion extends from an inner surface of the locking arms. The inner surface is engageable with the surface of the first component to deform the locking arms away from the longitudinal axis. Upon engagement, the at least one first protrusion engages the at least one second protrusion to secure the collar to the downhole device.

Abstract: A riser pressure relief apparatus includes a pressure relief valve with a valve member, an actuator, and a pilot valve assembly connected to a pressurized fluid. The valve member moves between a first position, which prevents a fluid flow through the side port, and a second position, which permits the flow. The actuator includes an open port and moves the valve member from the first to the second position by supplying the pressurized fluid to the open port. The pilot valve assembly moves between a first configuration, which prevents a flow of the pressurized fluid to the open port, and a second configuration, which permits the flow. A valve part of the pilot valve assembly moves from a first to a second position based on a fluid pressure in the riser, which causes the pilot valve assembly to move from the first to the second configuration or vice versa.

Abstract: Methods and systems for controlling drilling operations are provided. The methods and systems include conveying a drilling tool into a bore and operating the drilling tool to drill in a direction, creating, with an azimuthal sensing device, a first signal at a first time and a second signal at a second time, wherein each of the first signal and the second signal are indicative of the direction of the drilling tool, and each of the first signal and the second signal are affected by at least one of an unknown but substantially constant offset error or an unknown but substantially constant scale factor error, comparing the first signal with the second signal, and adjusting the drilling direction based on the comparison of the first signal with the second signal.

Abstract: A downhole tool for conveyance within a tubular secured in a wellbore extending into a subterranean formation. The downhole tool includes a sealing material and a laser apparatus operable to cut a slot in the tubular. The downhole tool is operable to provide melted sealing material within the slot.

Abstract: The present disclosure provides a drilling system, and a method of operating a downhole tool. The drilling system, in one embodiment, includes a housing defining a first longitudinal dimension, a driveshaft positioned within the housing and defining a second longitudinal dimension. In this embodiment, the housing and driveshaft are operable to slide relative to one another along the first longitudinal dimension and the second longitudinal dimension, and rotate relative to one another. The drilling system, in accordance with this embodiment, further includes a load sensor operable to sense the housing and driveshaft sliding relative to one another, and a locking mechanism operable to lock or unlock the relative rotation of the housing and the driveshaft in response to the load sensor sensing the housing and driveshaft sliding relative to one another thereto.

Abstract: A drilling component includes a spinodally-hardened copper-nickel-tin alloy. The drilling component may be a drill stem or a drill string component, such as a tool joint used for joining pipe together.

Abstract: A stress-free centralizer system for wellbore tubulars having a centralizer portion with hollow vanes or solid vanes. An injectable material can be configured to harden at ambient or elevated temperatures and installed into the hollow vanes while coating a portion of the inner surface of the centralizer portion. Alternatively, a swellable encapsulation and shape shifting material can be used instead of the injectable material. Additionally, primers and adhesives can be used with the centralizer portion. Both materials when hardened or swollen can be configured to withstand temperatures and pressures within a wellbore for twenty-four hours without melting or degrading. The centralizer portion can simultaneously prevent axial movement and rotational movement while installed on the wellbore tubular, distribute load evenly around the centralizer portion, and provide cathodic protection to the wellbore tubular without using a stop collar with screws.

Abstract: A method of obtaining an effective bulk modulus of a managed pressure drilling system is disclosed. The method includes generating a pressure wave in the managed pressure drilling system; measuring a time interval for the pressure wave to travel over a distance in the managed pressure drilling system; and calculating the effective bulk modulus of the managed pressure drilling system using the time interval and the distance.

Abstract: This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be deployed in a wellbore, and that can, in cooperation, increase production through the wellbore.

Abstract: 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 transition from rotary drilling to slide drilling to rotary drilling without user input during the transitions. The ASDS may also support user input and user notifications for various steps to enable manual or semi-manual control of slide drilling by a driller or an operator.

Abstract: A cutting table comprises hard material, and a fluid flow pathway within the hard material. The fluid flow pathway is configured to direct fluid proximate outermost boundaries of the hard material through one or more regions of the hard material inward of the outermost boundary of the hard material. A cutting element and an earth-boring tool are also described.

Abstract: Earth-boring tools may have a body, a cutting element attached to the body at a first location, and a formation-engaging structure attached to the body at a second location. The formation-engaging structure may be movable during a drilling operation between a first position and a second position. In the first position, the formation-engaging structure may be located rotationally behind the cutting element at a first radial distance from a longitudinal axis of the body at which the cutting element will at least initially shield the formation-engaging structure from engaging a formation. In the second position, the formation-engaging structure may be located at a different second radial distance from the longitudinal axis of the body at which the formation-engaging structure will engage a formation.

Abstract: A semi-permeable expanding sleeve system for pipe spreading in a borehole is disclosed. The system has an expansion sleeve, a grout injection pipe and a high-solids grout mixture. The expansion sleeve has a top end and a bottom end. The grout injection pipe has a first end, a second end, an inlet and at least one outlet. The grout injection pipe is insertable through the open top end of the expansion sleeve such that the at least one outlet is positionable within the expansion sleeve and the inlet is positionable adjacent the top end of the expansion sleeve. The grout mixture is pumped through the grout injection pipe into the expansion sleeve using a pump. A closing mechanism is provided for closing the expansion sleeve around the grout injection pipe to create a semi-permeable enclosure.

Abstract: A system is provided for injecting coiled tubing (CT) into and out of a wellbore. In embodiments, separate injector and reel units are provided releasing constraints on CT size and length. The injector unit is fit with an extendible mast for handling larger bottom hole assemblies and fit with a rotating gooseneck for accepting CT from alternate arrangements of the reel unit. The mast is reinforced to resist CT loading. The capacity of the reel is maximized for the reel unit transport envelope. The reel is rotated using an offset drive engaging a bounding reel flange, such as engaging drive and bull gears. A generally radial displacement of the drive from the reel permits replacement of the entire reel.