Abstract: A method of stimulating a subterranean formation using a tubular member with one or more burst disks therein.

Abstract: A drill bit for percussive rock drilling tools includes a drill bit head having a front surface including a face surface defining a forward-most end of the drill bit head and at least one hole in the drill bit head for receiving a button. The drill bit includes at least one recess located in the face surface. The recess is larger than the hole. The hole is disposed in the recess so that an open end of the hole is disposed below the face surface. The drill bit head further includes a gauge surrounding the face surface, the recess being partially disposed in the gauge.

Abstract: Downhole tools and methods for isolating a wellbore. A downhole tool can include a body having a bore or flowpath formed therethrough, and one or more sealing members disposed therein. The one or more sealing members can include an annular base and a curved surface having an upper face and a lower face, wherein one or more first radii define the upper face, and one or more second radii define the lower face, and wherein, at any point on the curved surface, the first radius is greater than the second radius. The sealing members can be disposed within the bore of the tool using one or more annular sealing devices disposed about the one or more sealing members.

Abstract: A well bore reaming device and method are disclosed. The device includes a drill string, a bottom eccentric reamer coupled to the drill string, and a top eccentric reamer coupled to the drill string, wherein the bottom and top eccentric reamers have a prearranged spacing and orientation.

Abstract: A method of drilling multiple boreholes within a single caisson, for recovery of methane gas from a coal bed, including the steps of drilling first and second vertical boreholes from a single location within a single caisson; drilling at least one or more horizontal wells from the several vertical bore hole, the horizontal wells drilled substantially parallel to a face cleat in the coal bed; drilling at least one or more lateral wells from the one or more horizontal wells, the lateral wells drilled substantially perpendicular to one or more face cleats in the coal bed; continuously circulating water through the drilled vertical, horizontal and lateral wells to recover the water and entrained methane gas from the coal bed; applying friction or choke manifold to the water circulating down the well bores so that the water appears to have a hydrostatic pressure within the well sufficient to maintain an equilibrium with the hydrostatic pressure in the coal bed formation; and drilling at least a third vertical bore

Abstract: An electric submergible pumping system that includes a pump having a pump discharge; a motor; a power crossover assembly including a first top flange having a generally circular opening in the center, an upper tubular portion connected to the first top flange portion, an intermediate tubular portion including two generally rectangular shaped windows for intake suction for production fluids, a lower tubular portion having a hollow space in a center portion, and a first lower flange having a circular shape connected to the lower tubular portion. The system also includes a crossover base disposed at a lower part of the power crossover assembly, the crossover base including a base neck, a guide tube, a conductor terminal, a second top flange, and a second lower flange.

Abstract: Heavy oil recovery using downhole radio frequency radiation heating accelerates SAGD thermal recovery processes. In one embodiment, one or more SAGD well pairs traverse a subterranean formation for recovering heavy oil. The SAGD well pairs each create a steam chamber which, over time, expands to allow each steam chamber to interact with one another and in this way, increases the recovery heavy oil from the formation. One or more antennas may be interposed between the steam chambers to introduce electromagnetic radiation into the formation to heat the fluids therein to accelerate expansion of the steam chambers, particularly where antennas are judiciously situated to optimize steam chamber expansion. Where an infill production well is present, the antennas may be situated to accelerate steam chamber communication with the infill production well. Advantages include lower cost, higher efficiencies, quicker and increased hydrocarbon recovery.

Abstract: An apparatus for horizontal directional drilling includes a housing and a sonde transmitter mounted in the housing. The housing includes a main fluid channel to permit a flow of a fluid therethrough. The apparatus further includes a fluid outlet at the front of the housing in communication with the main fluid channel and adapted to emit fluid. from the front of the housing during pilot bore operations. The housing further includes a plurality of fluid ports in fluid communication with the main fluid channel and adapted to emit fluid from the housing during pullback operations. Drill bits, drill bit adapters adapters, swivel connectors, and tow heads adapted to be coupled to the drill bits for direct pullback operations, as well as methods of direct pullback operations during horizontal direction drilling are also provided.

Abstract: Systems and methods for reducing the amount of torque transferred to the Bottom Hole Assembly and the drill string during drilling operations are disclosed. The drill string includes an optionally non-rotatable portion. A rotational hold down system is positioned at a first position on the drill string where it is not rotationally coupled to the drill string. The rotational hold down system is then moved to a second position on the drill string where it is rotationally coupled to the optionally non-rotatable portion of the drill string. In the second position, one or more bars on the rotational hold down system substantially prevent rotation of the optionally non-rotatable portion of the drill string.

Abstract: Adjustable drill string housings are described for use in the directional drilling of wellbores, e.g. wellbores for hydrocarbon recovery wells. The adjustable drill string housings permit adjustment of a bend angle in the housings without removing the housings from a wellbore. In some exemplary embodiments, the bend angle can be adjusted by changing the internal stresses in a support member carried by the housings. In other embodiments, the bend angle may be adjusted by causing failure of sacrificial support members carried by the housings, and the failure may be caused by delivering chemicals through a chemical delivery system to the sacrificial support members. Methods of operating the adjustable drill string housings include multi-lateral drilling operations wherein the bend angle is adjusted when a casing window has been detected.

Abstract: 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 portions of the cylindrical body. Additionally, the drill tool includes an instrumented cutting element on one of the plurality of blades. The instrumented cutting element includes a cutting table and a substrate coupled to the cutting table. The substrate includes a cavity. The instrumented cutting element further includes a core in the cavity and an electrical connector coupled to the substrate. The instrumented cutting element further includes a coil wire coupled to the electrical connector and surrounding portions of the core. The coil wire is configured to generate a signal in response to the instrumented cutting element being proximate to a magnetizable material.

Abstract: A wellbore servicing system disposed at a wellbore, the wellbore servicing system comprising at least one wellbore servicing equipment component, wherein a flow path extends from the wellbore servicing system component into the wellbore, and a flow-back control system, wherein the flow-back control system is disposed along the flow path, and wherein the flow-back control system is configured to allow fluid communication via the flow path in a first direction at not less than a first rate and to allow fluid communication via the flow path in a second direction at not more than a second rate, wherein the first rate is greater than the second rate.

Abstract: A wireline connector device (10) for use in wireline intervention operations comprises a housing (18) connected to a first wireline conduit (L), a piston sleeve (46) located within the housing, and a collet device (60) configured to receive and retain a second wireline conduit, the collet device having a plurality of collet fingers (58) arranged within the piston sleeve, which is movable within the housing to open and close the collet fingers. Optionally a restrictor (57) can be configured to control the movement of the piston sleeve, and can be adjustable to lock the piston sleeve in the second position when the collet fingers are closed around the second wireline conduit. Typically at least one indicator rod (55) projects from the housing, and the piston sleeve engages indictor rod in the second position.

Abstract: In a production apparatus for pumping production fluid to the surface of a well, a progressive cavity pump with a stator and a rotor in which the rotor has an extension which rests on a thrust bearing, lubricated by production fluid.

Abstract: A disintegrating plug features anchoring with friction rings that are expanded during the setting to contact the tubular. The design is modular and can integrate as many friction rings as needed to fixate the plug against the anticipated treating pressures from above when a ball is landed on the seat of the plug. The friction rings can be standalone or integrated with an adjacent ramp for the next friction ring. The friction rings are made from a disintegrating material along with other parts of the plug so that when the treating procedure is completed the plugs will substantially disappear to facilitate subsequent production. A fracking application is contemplated.

Abstract: The disclosure provides an apparatus for use in a wellbore that includes a first device that provides a first pressure differential based on a first constituent of a fluid and a second pressure differential based on a second constituent of the fluid and a second device that utilizes the first and second pressure differentials to operate a third device that performs an operation in the wellbore.

Abstract: A tool control mechanism is configured to activate and deactivate a drill string tool by hydraulic action of drilling fluid. The tool control mechanism is switchable between an activation mode and a deactivation mode. In the activation mode, a hydraulic activator ram is coupled to a tool switch member to drive the switch member in an activation direction in response to above-threshold drilling fluid conditions. In the deactivation mode, a deactivator ram is coupled to the tool switch member to drive the switch member in a deactivation direction opposite to the activation direction, when above-threshold drilling fluid conditions occur. The tool control mechanism is switchable between the activation mode and the deactivation mode by operator-controlled drilling fluid pressure variations.

Abstract: The present invention includes drill pipe screens and related methods that provide reliable long-term filtering of drilling fluids used to operate alternator turbines that are used to provide power in measurement while drilling (MWD) systems without allowing debris to pass through the screens to the turbines, and without causing intermittent pressure spikes at times when the screens are not completely clogged while maintaining desired circulation rates of drilling fluids. Embodiments of the invention include cylindrical bodies having alternating sets of elongated slots and peripheral ports located thereon to provide filtering of and relief to drilling fluids under pressure.

Abstract: An anchor assembly for anchoring casing or other pipe against axial upward movement while permitting rotation of the casing or other pipe. An inner mandrel member has a central bore and a flange member extending around the outer circumference of the mandrel. A friction reducing ring member is located on an upper surface of the flange member, while layered friction reducing sleeve members are positioned around the outer surface of the mandrel member. An anchor sleeve member is concentrically and rotatably positioned around the outer surface of the outermost friction reducing sleeve member. Connection flanges, each having at least one bore for attachment to a shackle or other connecting device, extend laterally from the outer periphery of the anchor sleeve member and allow for anchoring of the assembly (and any attached casing or other pipe) to a rig or other structural support member.

Abstract: An assembly that is usable with a well includes a base pipe, a shroud that is disposed radially outside of the base pipe and tubes. The tubes are disposed radially outside of the base pipe and are radially inside the shroud. The tubes longitudinally extend along the base pipe and radially expand to radially expand the shroud in response to pressurization of the tubes.