Abstract: A well tool assembly, system, and method for handling well debris is described. The assembly includes an electric submersible pump (ESP) configured to be positioned within a wellbore and a well debris cutting tool configured to be positioned downhole relative to the ESP within the wellbore. The ESP is configured to rotate in a first direction to pump well fluid in an uphole direction. The well debris cutting tool is configured to rotate in a second direction opposite the first direction and to grind debris carried by the well fluid in the uphole direction.

Abstract: A wellscreen has a gravel pack assembly installed that can communicate slurry from a transport tube to a pack tube. A bypass has erosion resistant surfaces exposed to flow of the conveyed slurry and diverts portion of the conveyed slurry from the fluid bore of the transport tube to a tube opening, from which the pack tube extends. The bypass can be incorporated into the top ring for supporting the filter on the basepipes. A sheath of erosion resistance can be formed on or installed in a channel of the end ring to be covered by a cover.

Abstract: This invention relates to a stabilizer (10) for a steerable drilling system, in particular for use in drilling directional boreholes for oil and gas extraction. There is provided a stabilizer (10) for a steerable drilling system having a first passageway (16) and a second passageway (18) at its outer surface, the passageways being helical and extending along the length of the stabilizer, the first and second passageways being oppositely-oriented, the first and second passageways intersecting one another, the stabilizer having a number of blades (22) between the passageways, the cross-sectional area of the first passageway being larger than the cross-sectional area of the second passageway. The asymmetric passageways enable the stabilizer designer to enhance the performance of the stabilizer during drilling and tripping.

Abstract: An earth-boring tool includes a body having a shank and a crown, a plurality of blades protruding from the crown of the body and extending at least substantially along a longitudinal length of the crown of the body, each blade extending radially outward and defining a respective radially outermost gage surface. The earth-boring tool further includes at least one rotatable cutting structure assembly including a leg and a rotatable cutting structure rotatably coupled to the leg. The earth-boring tool also includes at least one stabilizing structure secured to the crown of the body between an end of the leg opposite the rotatable cutting structure and the shank of the body, the at least one stabilizing structure being at least substantially circumferentially aligned with the leg of the at least one rotatable cutting structure assembly along a circumference of the crown of the body.

Abstract: A drilling assembly includes a straight housing in which a mud motor assembly is mounted. The mud motor includes a rotor that rotates within a stator. The rotor has an axial centerline substantially parallel with the housing. A drivetrain is coupled between the rotor and a driveshaft. The driveshaft is coupled to a drill head. The driveshaft has a centerline that is non-coincident with (i.e., offset or angled) the axial centerline. The angle between the driveshaft centerline and the axial centerline may be fixed or variable. The angle may be variable in response to an axial force, imparted to the rotor, that is transferred to the driveshaft through the drivetrain. Additional apparatus, systems, and methods are disclosed.

Abstract: A shaft enlargement arrangement for a boring system is provided, the shaft enlargement arrangement comprising a hollow column proximate a lower end of the boring system; a first cutter head that is rotatably fitted to the hollow column, with first drive means being provided to rotate the first cutter head relative to the hollow column so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head; and a boring head arrangement fitted to an operatively lower end of the column, the boring head arrangement terminating in a second cutter head to bore a leading hole as the boring system proceeds to bore downwardly. In an embodiment, the first cutter head comprises a support body carrying a winged arrangement, the support body being rotatably fitted to the column, the winged arrangement comprising a plurality of wings extending from the support body, each wing being fitted with, or comprising, a plurality of first cutter elements.

Abstract: A testable back pressure valve can include a body. The valve can also include a first flow regulating device movably disposed within a top end of the body, where the first flow regulating device is configured to move from a first default position to a first position based on first flow characteristics of a first fluid that flows into a top end of the body toward a bottom end of the body. The valve can further include a second flow regulating device movably disposed within the bottom end of the body. The valve can also include a network of channels disposed within the body between the first flow regulating device and the second flow regulating device.

Abstract: A connector assembly attaches downhole tools to one another to form a tool string. The connector assembly includes male and female subs, each with latch ends that selectively latch to one another. Ends of the subs distal from their latch ends are configured for attachment to the downhole tools. A plug assembly is in one of the subs and a socket assembly is disposed in the other sub; the plug and socket assemblies mate with one another when the subs attach. Mating the plug and socket assemblies forms a signal communication path through the connector assembly so that adjacent tools are in signal communication. The plug and socket assemblies and male and female subs are annular and circumscribe a bore that extends axially through the connector assembly. Downhole tools that attach to opposing ends of the connector assembly are in communication through the bore in the connector assembly.

Abstract: A MAX-phase material is provided for a cutting tool and other applications.

Abstract: An improved plug for sealing a tubular as described. The improved plug comprises a plug body, the plug body comprising a propellant and an initiator adapted to initiate the propellant upon a signal. Upon initiation the propellant deflagrates causing the plug body to at least partially disintegrate.

Abstract: A technique facilitates controlling fluid flow in a well system or other flow related system. The control of fluid flow may be accomplished by utilizing a flow control valve which is selectively actuated via the controlled application of an actuating fluid. An isolation valve is positioned along the flow of actuating fluid at a location upstream of the flow control valve. The isolation valve establishes a preset pressure which is applied to establish flow of actuating fluid to the flow control valve and also isolates detrimental pressure transients. For example, the isolation valve may be used to reduce or block the propagation of detrimental pressure transients along the actuating fluid to other controlled devices.

Abstract: In a method to degrade filtercake in a hydrocarbon reservoir using downhole in-situ heat generation, a filtercake breaker, configured to degrade filtercake at a temperature, is mixed with a drilling fluid. The drilling fluid mixed with the filtercake breaker is flowed through a hydrocarbon reservoir in which a wellbore is being drilled. A filtercake forms in a portion of the hydrocarbon reservoir responsive to flowing the drilling fluid. A temperature of the portion of the hydrocarbon reservoir is less than the temperature at which the filtercake breaker is configured to degrade filtercake. Multiple filtercake chemicals are flowed to the portion of the hydrocarbon reservoir. The multiple filtercake chemicals, when mixed, are configured to react in an exothermic reaction to release heat to increase the temperature of the portion of the hydrocarbon reservoir to at least the temperature at which the filtercake breaker is configured to degrade filtercake.

Abstract: In a method to degrade filtercake in a hydrocarbon reservoir using downhole in-situ heat generation, a filtercake breaker, configured to degrade filtercake at a temperature, is mixed with a drilling fluid. The drilling fluid mixed with the filtercake breaker is flowed through a hydrocarbon reservoir in which a wellbore is being drilled. A filtercake forms in a portion of the hydrocarbon reservoir responsive to flowing the drilling fluid. A temperature of the portion of the hydrocarbon reservoir is less than the temperature at which the filtercake breaker is configured to degrade filtercake. Multiple filtercake chemicals are flowed to the portion of the hydrocarbon reservoir. The multiple filtercake chemicals, when mixed, are configured to react in an exothermic reaction to release heat to increase the temperature of the portion of the hydrocarbon reservoir to at least the temperature at which the filtercake breaker is configured to degrade filtercake.

Abstract: A tubing hanger running tool includes an inner annular body, an outer annular body positioned circumferentially about the inner annular body, and an outer sleeve positioned circumferentially about the outer annular body and configured to move in an axial direction to actuate a hanger-to-wellhead lock ring to set the tubing hanger within the wellhead. The tubing hanger running tool also includes one or more control line adapters, wherein each of the one or more control line adapters are configured to fluidly couple a first passageway in the outer annular body to a second passageway in the inner annular body to provide a continuous control line path through the tubing hanger running tool as the tubing hanger running tool runs and sets the tubing hanger within the wellhead.

Abstract: A flow diversion valve comprising: a valve body including an upper housing releasably connected to a lower housing, the upper housing and lower housing being configured to receive a rotating rod therethrough; a shuttle positioned within the valve body, the shuttle being configured to move to cover one or more spill ports of the valve body; and a releasable locking member, wherein the releasable locking member is releasably connected to the valve body and positioned between the upper housing and the lower housing to assist in preventing relative movement therebetween.

Abstract: A down-the-hole drill hammer is provided that includes a housing, a drill bit proximate a distal end of the housing, and a roller bearing assembly. The roller bearing assembly circumscribes the drill bit. The roller bearing assembly includes a race and a plurality of rollers. The plurality of rollers are operatively engaged with the race.

Abstract: A system for controlling a downhole component within a borehole, the system including a transfer assembly coupled between a rotatable component and the downhole component, the transfer assembly including a swash plate assembly configured to control the downhole component and a member configured to engage the swash plate assembly. The member is configured to move radially based upon a rotational speed of the rotatable component to selectively engage the swash plate assembly.

Abstract: Methods, apparatus and systems for in-situ heating fluids with electromagnetic radiation are provided. An example tool includes a housing operable to receive a fluid flowed through a flow line and a heater positioned within the housing. The heater includes a number of tubular members configured to receive portions of the fluid and an electromagnetic heating assembly positioned around the tubular members and configured to generate electromagnetic radiation transmitted to heat the tubular members. The heated tubular members can heat the portions of the fluid to break emulsion in the fluid. Upstream the heater, the tool can include a homogenizer operable to mix the fluid to obtain a homogenous fluid and a stabilizer operable to stabilize the fluid to obtain a linear flow. Downstream the heater, the tool can include a separator operable to separate lighter components from heavier components in the fluid after the emulsion breakage.

Abstract: An apparatus having a skid, a boom having a first end attached to the skid and pivotable around an axis proximate the first end such that a second end of the boom raises and lowers relative to the skid, and a room mounted on the skid. The apparatus may further include a raisable apparatus supported by the second end of the boom and having one or more plug panels configured to connect to one or more first cables. The apparatus may also include second cables routed from the raisable apparatus and attached to and supported at least in part by the boom, wherein the second cables may be configured to provide electrical power to the raisable apparatus.

Abstract: Production capability of cased hole perforations in a cased completed well lined with a casing in an under-pressured gas producing reservoir is tested. A sonde of a dipole shear or array sonic (full waveform) acoustic well logging tool is moved in a well bore of the cased completed well in the reservoir across a depth interval of interest, which covers cased hole perforations zones in the reservoir. The well logging sonde has in it an acoustic energy source and acoustic energy receivers. Responses are logged at depth intervals of interest to the transit of Stoneley waves along the casing walls from the acoustic energy source to the acoustic energy receivers. Measures of characteristics (e.g., travel time and attenuation) of the Stoneley wave are obtained. The responses are then processed to indicate production capability of the cased hole perforations.