Abstract: A drawer-integrated step stool for selective extension from a drawer includes a box that is substantially complementary to a recess of a cabinet. The box is configured to slidably couple to the cabinet, such that the box is extensible from the recess. The box has an upper face, which is open. Stairs, positioned in the box, have a bottom that is pivotally coupled to opposing sides of the box proximate to a front. A lift, coupled to and positioned in the box, is operationally coupled to a top of the stairs. An actuator, coupled to the box, is operationally coupled to the lift. The actuator is configured for activation by a foot of a user to compel the box to extend from the recess and to signal the lift to elevate the stairs through the upper face, wherein the stairs are configured for ascension by the user.

Abstract: A positionable carriage assembly is disclosed. In one aspect, the positionable carriage assembly includes an actuation device, such as one or more linear hydraulic cylinders, that is linked to a linear drive element. The linear drive element can include a first and second gear racks. The positionable carriage assembly may also include a first carriage member having a third gear rack and a second carriage member having a fourth gear rack. A first gear structure may be provided that operably intermeshes with the first and third racks while a second gear structure may be provided that operably intermeshes with the second and fourth racks. In operation the actuation device imparts a linear movement in a first direction onto the linear drive element which in turn imparts a synchronized linear movement in a second direction orthogonal the first direction onto the carriage members via the intermediate first and second gear structures.

Abstract: A rock drill includes a frame, a percussion member, an axial shank, and an axial sleeve provided within the frame and including a first pressure surface provided in a first pressure space and a second pressure surface provided in a second pressure space. A first channel is provided in the axial sleeve for providing a connection between the first pressure space and the second pressure space in at least one position of the axial sleeve in the frame. A second pressure channel connected to the second pressure space is connectable to external pressure. A iu pressure accumulator is connected to the first pressure space and the flow of the pressure medium outwards from the first pressure space is throttled.

Abstract: Embodiments of systems and methods to control directional drilling in borehole drilling for hydrocarbon wells are disclosed. An actual toolface orientation measurement value and an actual downhole torque on bit (DTOB) or actual downhole weight on bit (DWOB) measurement value for a drill string positioned in a borehole are determined. Responsive to a comparison of target measurement values and actual measurement values, error values are determined. A control command for one or more of a top drive, a drawworks, and a mud pump responsive to the DTOB or DWOB error value and the toolface orientation error value is determined. Additionally, one or more of the top drive, the drawworks, and the mud pump are operated responsive to the control command thereby to correct a toolface orientation of the drill string.

Abstract: An illustrative dogleg severity (DLS) estimation method includes: retrieving dimensions of steering assembly; determining an initial DLS estimate; using the DLS estimate in combination with the steering assembly dimensions to determine node displacements for a shaft portion of the steering assembly; deriving a bit side force from the node displacements while accounting for elastic bending in a housing portion of the steering assembly; performing a DLS calculation based in part on the bit side force; adjusting the DLS estimate if the DLS calculation does not match; repeating said using, deriving, performing, and adjusting until a match is achieved; and storing the DLS estimate on a nontransient information storage medium.

Abstract: A system for preventing annular pressure buildup comprising: a wellbore; two or more annuli located within the wellbore; a piston assembly located adjacent to a wellhead of the wellbore; and a pipe system that connects the two or more annuli in parallel to the piston assembly, wherein when the amount of pressure in the pipe system exceeds a predetermined amount, then a piston of the piston assembly moves whereby the movement reduces the amount of pressure in the two or more annuli.

Abstract: An optically powered system for rapid, focused heating and melting of water ice. The optical wavelength is chosen to fall in a range where transmissivity through liquid water is higher than through ice. An alternative embodiment of the invention further comprises a length of fiber optic tether between source and output to allow for motion of the melt head. A further embodiment includes probing the ice using various sensing modalities exploiting the presence of the fiber in the ice, searching for biomarkers and characterizing the radiation/light environment for subsurface habitability, including photosynthetic potential and radiation environment as a source for energy.

Abstract: The invention relates to a method for processing submerged material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, comprising providing electrodes in a process zone proximate the material for providing an electric current through the material for crushing the material, and displacing of fluid of the body of water away from the process zone to outside the process zone before application of the electric energy.

Abstract: The present invention relates to a “drilling-flushing-slotting” coupled pressure relief and permeability increasing method for a high gas outburst coal seam, which is more particularly suitable for the pressure relief and permeability increasing when gas of a roadway band of the high gas outburst coal seam is pre-extracted through crossing boreholes. On the basis of the crossing borehole pre-extraction measures for the coal seam gas, the hydraulic flushing and the hydraulic slotting are reasonably combined, and a “drilling-flushing-slotting” dedicated device is utilized to implement the coupled operation of “low pressure drilling-medium pressure flushing-high pressure slotting” in a borehole, so that the coal in the pre-extraction area is deformed and moved to form network cracks, passages are provided to the desorption flow of the gas, and the gas is easier to extract.

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: Embodiments relate to polycrystalline diamond compacts (“PDCs”) including a polycrystalline diamond (“PCD”) table in which a metal-solvent catalyst is alloyed with at least one alloying element to improve thermal stability of the PCD table. In an embodiment, a PDC includes a substrate and a PCD table bonded to the substrate. The PCD table includes diamond grains defining interstitial regions. The PCD table includes an alloy comprising at least one Group VIII metal and at least one metallic alloying element that lowers a temperature at which melting of the at least one Group VIII metal begins. The alloy includes one or more solid solution phases comprising the at least one Group VIII metal and the at least one metallic alloying element and one or more intermediate compounds comprising the at least one Group VIII metal and the at least one metallic alloying element.

Abstract: A protector for a connection for a tubular component for drilling or operating hydrocarbon wells, provided with a distal end surface, the protector comprising an annular housing comprising a bottom, two lateral walls, outer and inner, separated from each other and in which an annular gasket is disposed, each lateral wall comprising a bottom lateral wall portion and an exterior lateral wall portion and an upper face, the two exterior lateral wall portions defining an opening with width Au and characterized in that a distance A between two bottom lateral wall portions is greater than the width Au, in a manner such as to allow a first annular gasket to be positioned then to allow said annular gasket to be retained in the annular housing.

Abstract: A protector for the male or female end of a threaded tubular connection for drilling or operating hydrocarbon wells, comprising a principal body, a first sealing gasket formed from a material which is less rigid than the material of the protector body and intended to make a seal with a surface of an end of the component, the principal body comprising a plurality of orifices through which the sealing gasket passes.

Abstract: A technique facilitates formation of a connection between a first component and a second component. The first component and the second component may each comprise a tubular component. Additionally, the second component is secured to the first component via a coupler which is constructed to establish a hydraulic chamber between the coupler and at least one of the first component and the second component. Application of hydraulic pressure in the hydraulic chamber causes a desired preloading of the first component and the second component across the connection.

Abstract: A tubular drill stem component including an end element having an axis of revolution and including a threading extending about the axis of revolution, the end element configured to be connected by makeup onto a corresponding end element of another tubular component including a complementary threading, the end element including at least one outer abutment configured to come into contact with a corresponding outer abutment of the other component at an end of makeup, and wherein the outer abutment includes at least one helical surface having an axis of the helix that coincides with the axis of revolution.

Abstract: An apparatus comprises a first number of splines located near a first end of a first joint section and a second number of splines located near a second end of a second joint section. The first number of splines extends in an axial direction of the first joint section and spans a circumferential surface of the first joint section. Each of the first number of splines has a base, a tip, and a pair of flanks that extends from the base to the tip and forms an acute angle. Each of the first number of splines are configured to be received between adjacent pairs of splines in the second number of splines as the first end of the first joint section and the second end of the second joint section are joined.

Abstract: A telescopic tool is located intermediate a conveyance string and permits an uphole portion to be manipulated through reciprocation and rotation regardless of the fixed nature of a downhole portion. In embodiments, tools uphole of telescopic joint can be actuated by casing manipulation to aid in placement of cement. In other embodiments, such as during running into the wellbore, the tool can be selectively actuated to cause the uphole casing string to lock to, and rotate, the casing string located downhole.

Abstract: An apparatus for assembling a tubular string includes a rig drilling bail, a joint bail extender, and a device. The joint bail extender is rigidly coupled to the rig drilling bail. The device is coupled to the first joint bail extender and configured to engage a tubular segment.

Abstract: A pipe wrench for making-up or breaking-out a threaded connection between a first tubular member and a second tubular member includes an upper wrench assembly with a pair of upper jaw assemblies configured to grip the first tubular member and a lower wrench assembly with a pair of lower jaw assemblies configured to grip the second tubular member. The upper and lower wrench assemblies are concentrically constrained, axially overlap, and radially engage with one another. Each of the upper and lower wrench assemblies independently includes a frame with a curved segment containing an arc at an angle of about 160° to about 200°. The upper and lower wrench assemblies are configured to rotate the first tubular member relative to the second tubular member and can have an angle of rotation in a range from about 75° to about 180°.

Abstract: In one aspect, a mud-gas separator vessel defines an internal region in which a slurry is adapted to be collected. The slurry defines a fluid level. A sensor is adapted to measure the fluid level. An electronic controller is in communication with the sensor and is adapted to receive measurement data. A control valve is in communication with the controller and is adapted to control discharge of the slurry. The controller is adapted to automatically control the control valve based on the measurement data and thus actively control the fluid level using the control valve. In another aspect, a method is provided for automatically maintaining the fluid level to prevent vent gas carry under from the separator vessel. In another aspect, a kit is provided for actively controlling the fluid level. In another aspect, a method of retrofitting a mud-gas separator apparatus is provided.

Abstract: A downhole tool actuation system including: a tubing having a longitudinal axis and a main flowbore supportive of tubing pressure; an indexing mechanism in fluidic communication with the main flowbore, the indexing mechanism configured to count N number of tubing pressure cycles; a port isolation device movable between a blocking condition and an actuation condition, the port isolation device in the blocking condition for N?1 cycles of the indexing mechanism, and movable to the actuation condition at the Nth cycle of the indexing mechanism; and, a chamber sealed from the main flowbore in the blocking condition of the port isolation device, the chamber exposed to the tubing pressure in the actuation condition of the port isolation device. The downhole tool actuation system is configured to actuate a downhole tool upon exposure of the chamber to tubing pressure.

Abstract: A plug launching system includes a main body and a plug canister disposed within the main body. The plug canister includes a liner, a first rotational assembly disposed about the liner, wherein the first rotational assembly is configured to support a first plug disposed within the liner and selectively enable fluid flow from an annulus between the main body and the plug canister to a central passage of the liner, and a second rotational assembly disposed about the liner, wherein the second rotational assembly is configured to support a second plug disposed within the liner and selectively enable fluid flow from the annulus between the main body and the plug canister to the central passage of the liner, wherein the first and second rotational assemblies are configured to be actuated independently from one another.

Abstract: A technique facilitates failsafe closure of a valve used in, for example, a subsea test tree. The technique utilizes a valve combined with a cutter oriented to sever well equipment passing through an interior passage of the valve. The valve is operatively coupled with an actuation system having an actuator piston which controls cutting and valve closure. The failsafe valve and the cutter are shifted to an open position by applying pressure in a control fluid chamber to shift the actuator piston. However, the actuator piston, and thus the valve and cutter, are biased toward a closed position via pressure applied in a pressure chamber and a gas precharge chamber. The combined pressure ensures adequate force for shearing of the well equipment and closure of the valve when hydraulic control pressure is lost. In some applications, additional closing force may be selectively provided to the actuator piston.

Abstract: A pressure containment device includes a sealing element. The sealing element includes a longitudinal axis, a substantially annular cross-section arranged perpendicular to the longitudinal axis, a radially inwardly facing interior surface having a plurality of recesses, a radially outwardly facing exterior surface, a first end surface having a plurality of recesses, and a second end surface. The first end surface and the second end surface are each arranged to extend from the radially inwardly facing interior surface to the radially outwardly facing exterior surface. The first end surface and the second end surface are arranged at opposite ends of the sealing element.

Abstract: A method and apparatus according to which a hydraulic fracturing fluid is communicated to a wellhead, the apparatus including a fracturing tree connected to the wellhead and into which the hydraulic fracturing fluid is adapted to flow, a fluid conduit connected to the fracturing tree and through which the hydraulic fracturing fluid is adapted to flow before flowing into the fracturing tree, the fluid conduit defining a straight fluid flow path, and a zipper module connected to the fluid conduit and out of which the hydraulic fracturing fluid is adapted to flow before flowing through the fluid conduit. The hydraulic fracturing fluid flows along the straight fluid flow path of the fluid conduit upon flowing out of the zipper module, and continues to so flow along the straight fluid flow path until the hydraulic fracturing fluid flows into the fracturing tree.

Abstract: An apparatus including a robotic manipulator coupled to an oilfield device to facilitate support operations. The robotic manipulator can include a tool for interacting with components of the oilfield device, and the robotic manipulator can provide three translational degrees of freedom of the tool with respect to the oilfield device. Additional systems, devices, and methods are also disclosed.

Abstract: A bore tool can include a component that includes a longitudinal axis and a perimeter surface disposed at one or more radii from the longitudinal axis; and an elastomeric component disposed about the perimeter surface where the elastomeric component includes an elastomeric material that includes carbon-based nanoplatelets.

Abstract: A well tool device includes a mandrel device, a sealing element and upper and lower supporting devices. The well tool device may be configured between a run state, in which the sealing element is radially retracted, and a set state, in which the sealing element is radially expanded. The well tool device further includes a pressure distribution device for distributing the pressure on the sealing element in the set state via the upper and lower supporting devices. The pressure distribution device includes a sleeve device provided radially outside the mandrel device and radially inside the sealing element, where the sleeve device is axially displaceable in a sleeve compartment in relation to the mandrel device and the sealing element. The sleeve device includes an upper protrusion for applying a downwardly directed axial force to the upper supporting device when the sleeve device is in its lower position.

Abstract: A settable downhole tool with preset metallic split rings having gaps from their leading edges to their trailing edges. The rings expand radially outward during setting by widening the gaps, adjacent rings covering the gaps, creating a substantially fluid tight metal to metal seal with the casing.

Abstract: A system including a hydraulic tool configured to energize a lock ring system and a seal assembly with a hydraulic fluid, wherein the hydraulic tool including a hydraulic body configured to couple to a hydraulic fluid source, a first piston configured to move axially with respect to the hydraulic body to energize the seal assembly, and a second piston configured to move axially with respect to the hydraulic body to energize the lock ring system, wherein the first and second pistons are simultaneously exposed to the hydraulic fluid in an opening in the hydraulic body.

Abstract: An activation device is disclosed that can activate multiple downhole tools in a wellbore. The activation device is cost effective and easy to produce. A method for activating multiple downhole tools in a wellbore is described where at least one downhole tool is activated by magnetic field, while at least one additional downhole tool is activated by mating of the activation device with the downhole tool.

Abstract: The present invention relates to a downhole drilling method for drilling a well in a formation having a formation pressure. The downhole drilling method comprises providing a drill string having a first part and a second part, the second part being arranged closer to a top of the well than the first part, and the first part having a drilling head in a first end and an annular barrier arranged closer to the top of the well than the drilling head.

Abstract: A ball valve is provided. The ball valve includes a housing, a ball seat arranged in the housing, a ball member mounted within the housing and being rotatable relative to the ball seat between open and closed positions, the ball seat and ball member defining respective through bores, the ball member including a sealing surface, a bore surface and a leading edge surface extending between the sealing surface and the bore surface, the leading edge surface being configured to cut a body extending at least partially through the valve upon closure of the ball member, wherein said leading edge surface is truncated. The ball member may include a relief region proximate the leading edge surface.

Abstract: A valve includes a valve body defining a top end, a bottom end distal from the top end, and a shaft bore defined in the top end and the bottom end; a valve shaft positioned at least partially within the shaft bore of the valve body and defining an end bore; and a shaft blowout prevention fastener secured within the end bore of the valve shaft.

Abstract: A downhole component includes a body and a stress riser formed in the body. The stress riser being positioned and shaped to promote a full fracture of the body while maintaining a structure of the body to bear force in at least one direction. A downhole system having a tubular string disposed in a borehole.

Abstract: An electro-hydraulic actuator includes a housing having an interior portion a first opening and a second opening, a transducer is arranged in the interior portion. The transducer includes a sensor operatively coupled to a signal source at the first opening. A selectively activatable valve component is arranged at the second opening. The selectively activatable valve component maintains a desired pressure in the interior portion of the housing. An actuator is operatively coupled to the transducer and operable to activate the selectively activatable valve component exposing the interior portion to a volume of fluid in response to a signal from the transducer to activate a downhole system.

Abstract: Methods and apparatus for utilizing a valve with a pump rotor passage with a downhole production string, the pump rotor being on a rotatable rod with a bobbin moving along the rod between a position for opening the passage to fluid flow, when the bobbin is not seated on a shuttle seat, and a position for closing the passage to fluid flow, when the bobbin is seated on the shuttle seat. The pump rotor and rod are removable through the passage while leaving the pump stator in place upstream of the valve.

Abstract: Example of the present disclosure relate to frac sleeve with set of inner sleeves that allow selective open and close of such sleeves, where clusters of the same frac sleeves to be treated top to bottom.

Abstract: A differential fill valve assembly for application in float collars or shoes in a well casing can provide locking mechanisms to limit premature movement of an activating sleeve while facilitating desired advancement of the activating sleeve. The valve assembly comprises a backpressure flapper valve and an activating sleeve slidably disposed within a housing. The activating sleeve initially maintains the flapper valve in an open position while the activating sleeve is maintained in its position by upper and/or lower lock rings on either side of a shoulder of the activating sleeve. A tripping ball is dropped to seat in the activating sleeve. Pressure applied on the ball moves the activating sleeve downward, releasing the backpressure flapper valve, after which the tripping ball exits the bottom of the assembly. The lower lock ring maintains the activating sleeve in its lower position.

Abstract: In one aspect, a downhole device for use in a wellbore to selectively isolate a first pressure and a second pressure is disclosed, including a first piston including: a first sealing face to selectively isolate the first pressure and the second pressure; a first pressure face to receive the first pressure; and a second pressure face to receive the second pressure; and a second piston selectively coupled to the first piston, the second piston including a third pressure face to receive the second pressure; and a fourth pressure face to receive the first pressure, wherein the fourth pressure face is larger than the first pressure face.

Abstract: The present invention relates to a heating cable for extraction pipes of viscous hydrocarbon or paraffinic in conventional wells and tight type wells, with flooded ring in eventual or permanent cases, suitable for use between low and high fluid pressure ranges. The cable, flat type with parallel electric conductors, is also suitable for use in both vertical and directional wells with high operational flexibility in a wide range of variables. Each of the electric conductors (2) is covered by a primary insulation layer (3), and the set of conductors is monolithically coated by a main insulating layer (4) made of fluoropolymer material resistant to the high pressure of the surrounding fluid. Outside of the main insulating layer (4), the structure of the cable is complemented with an external shield (5) defined by a thin metallic material layer.

Abstract: A downhole tool string for conveying within a wellbore, including an engagement device for engaging a downhole feature located within the wellbore, a first actuator for applying a substantially non-vibrating force to the engagement device while the engagement device is engaged with the downhole feature, and a second actuator for applying a vibrating force to the engagement device while the engagement device is engaged with the downhole feature.

Abstract: A safety apparatus for personnel on an oil drilling rig includes a cylindrical quick disconnect switch having a receptacle and a plunger. The receptacle has an open circuit pair of electrical wires. The plunger is configured to attach to a derrick man. The plunger and the receptacle are configured to mate when the plunger is inserted into the receptacle and to remain frictionally mated until pulled apart. The mating results in closing the circuit between the pair of electrical wires.

Abstract: A plan structure and its applications in the upstream oil and gas industry are disclosed. The plan defines logical, sequential and conditional interrelationships between events in the plan, so that a controller can carry out the plan in a flexible and time-independent manner to complete the sequenced events. The definition of the logical, sequential and conditional interdependencies permits flexibility in how the controller uses the time and resources available to it so that the plan directs the controller in a non-prescriptive manner, allowing greater flexibility in plan execution and reducing the necessity for re-planning to occur when changes in the world or environment in which the controller executes the plan are detected.

Abstract: A method of forming a screen assembly includes arranging a first end portion of each of a plurality of rib members into a rib alignment jig, positioning a sleeve about the rib alignment jig with an inner surface of the sleeve abutting the first end portion of each of the plurality of rib members, and resistance welding the sleeve to the first end portion of each of the plurality of rib members.

Abstract: Utilizing multiple rock cores samples obtained while drilling a well to determine the mechanical properties of the rock constituting the wellbore and formation zones within the wellbore. A geomechanical model is created from the samples by nanoindentation testing to provide the raw data from which the geomechanical model is then created.

Abstract: A perforating gun includes a carrier, an explosive charge positioned within the carrier, a detonator positioned within the carrier, and a switch positioned within the carrier. The detonator detonates the explosive charge when the detonator receives power. The switch actuates between at least a first position and a second position. The switch transmits power to the detonator when the switch is in the first position, and the switch transmits power to a pyrotechnic device when the switch is in the second position. The pyrotechnic device detonates or deflagrates when the pyrotechnic device receives power.

Abstract: A downhole assembly in a wellbore includes a production logging tool disposed in the wellbore and a jet pump device set in a bottom hole assembly uphole from the production logging tool. The jet pump has a central axis, and includes one or more internal components that are radially offset to allow a slickline to pass through the jet pump device. The slickline is configured to actuate the production logging tool. While the jet pump device is operating to produce fluids, the production logging tool is further reciprocated within the wellbore on the slickline to obtain measurements at various locations.

Abstract: A system (100) for injecting flue gas to a subterranean formation, wherein the system (100) is configured to receive an initial mixture of N2, CO2 and less than 2% other components and comprises a compressor (110) for obtaining and maintaining a predetermined downhole pressure. The system (100) has a control system (200) for maintaining the amount of CO2 in an injection mixture in the range 12-90% and can be configured for EOR.

Abstract: The subject matter of this specification can be embodied in, among other things, a method for treating a geologic formation that includes providing a hydraulic fracture model, providing a first value representative of a volume of kerogen breaker in a fracturing fluid, determining a discrete fracture network (DFN) based on the hydraulic fracture model and the first value, determining a geomechanical model based on the DFN and a reservoir model based on the DFN, determining a hydrocarbon production volume based on the geomechanical model and the reservoir model, adjusting the first value based on the hydrocarbon production volume, and adjusting a volume of kerogen breaker in the fracturing fluid to a hydrocarbon reservoir based on the adjusted first value.