Abstract: An electric stator surrounds a rotor and is configured to cause the rotor to rotate or generate electricity in the electric stator when the rotor rotates. The electric stator is spaced from the rotor and defines a first annular fluid gap in-between that is in fluid communication with an outside environment exterior the electric machine. A radial bearing includes a first portion coupled to the rotor and a second portion coupled to the electric stator. The first portion is spaced from the second portion defining a second annular fluid gap in-between that is in fluid communication with the outside environment exterior the electric machine.

Abstract: A rotor is surrounded by a stator. A radial bearing includes a first radial bearing portion coupled to the rotor and a second radial bearing portion coupled to the stator. A thrust-bearing includes a first portion coupled to the rotor. The first portion is spaced from a second portion coupled to the stator defining a first annular fluid gap in-between that is in fluid communication with an outside environment exterior the downhole-type machine. The thrust bearing is configured to support an axial load of the rotor within the stator.

Abstract: A system to provide power to a tool includes an electric motor that can operate at rotary speeds of at least 6,000 rpm, a variable speed drive electrically connected to the electric motor, and a step-up transformer electrically coupled to the electric motor and the variable speed drive, in which the variable speed drive can generate and transmit a drive signal to supply power to the electric motor when the electric motor is spaced apart from the variable speed drive by a distance of at least 100 meters, and the transformer can prevent capacitive leakage in the drive signal transmitted over the distance from the variable speed drive to the electric motor.

Abstract: Certain aspects of the subject matter described here can be implemented in a downhole-type electric submersible pump system. An electric machine can be disposed downhole in a wellbore. The electric machine is coupled to rotate with an impeller that can be disposed downhole in the wellbore. The electric machine includes a stator assembly with at least three stator sections axially arranged and spaced apart from each other along a longitudinal axis of the electric machine. The electric machine also includes a rotor assembly with at least three rotor sections arranged axially along the longitudinal axis of the electric machine.

Abstract: A millable bridge plug system includes a mandrel, an upper cap end, a sealing member, ring members, cone assemblies, slip devices and a lower cap end. The sealing member, ring members, cone assemblies and slip devices are positioned on and around the mandrel. Ring members abut against an upper end and a lower end of the sealing member. The other sides of the ring members abut against the cone assemblies, and the cone assemblies engage respective slip devices. The upper cap end attaches to the first slip device, and the lower cap end attaches to the second slip device. The lower cap end holds the mandrel and second slip device together to resist rotation during milling.

Abstract: A mechanism for selectively activating a plurality of downhole pathways. The method includes a casing segment which includes a plurality of casing ribs, a valve which includes a sleeve coupled for movement between an open and normally closed position, a rocker member mounted to the sleeve, a dart for pumping in hole including a dart profile matched to the rocker member profile such that the dart profile couples to the rocker member profile when in close proximity and, in turn, the sleeve moves using hydraulic force from the closed position to the open position.

Abstract: A high temperature downhole packer including a tubular member, an annular and longitudinally movable ring, and a packer. The tubular member has a stop located on an outer diameter thereof. The annular and longitudinally movable ring is disposed around the outer diameter of the tubular member. The packer element is disposed between the stop and the ring. The packer element includes a high temperature elastomeric polymer having a first storage modulus from about 1,000 MPa to about 10,000 MPa at a first temperature between about ?100° C. and about 175° C., and a second storage modulus from about 1 MPa to about 1000 MPa at a second temperature ranging from about 175° C. to about 475° C.

Abstract: The system and method for setting a completion tool within a wellbore includes assembling a mandrel, inner sleeve, piston, outer sleeve, and dog member. In a first locked position, the dog member abuts against the indentation of the mandrel and the locking surface of the piston. The dog member is friction fit between the piston and mandrel so that movement of the completion tool corresponds to movement of the mandrel. The mechanical link, such as shear pins, of the completion tool is protected by the dog member holding steady on the mandrel. When the completion tool reaches the desired location, a pressure pulse opens a chamber between the sleeves to transition to a second released position. The dog member releases from the mandrel to be housed in the chamber, when movement of the mandrel sets the completion tool by the mechanical link, such as shear pins.

Abstract: A light-emitting device comprising a lamp casing, a heat dissipation element and a light-emitting module is provided. A first opening and a second opening are formed on an upper end and a lower end of the lamp casing respectively. An edge of the lamp casing adjacent to the first opening is bended inward to form a bending portion. The heat dissipation element has several carrying portions separated from each other and arranged in radial-shape, and several fins perpendicular to the carrying portions. Each fin is bended downward and vertically from an edge of the carrying portions and extended toward the second opening. The light-emitting module comprises a substrate and several light-emitting elements. An edge of the substrate leans against the bending portion, such that the light-emitting module is sandwiched between the carrying portions and the bending portion.

Abstract: The system and method for setting a completion tool within a wellbore includes assembling a mandrel, inner sleeve, piston, outer sleeve, and dog member. In a first locked position, the dog member abuts against the indentation of the mandrel and the locking surface of the piston. The dog member is friction fit between the piston and mandrel so that movement of the completion tool corresponds to movement of the mandrel. The mechanical link, such as shear pins, of the completion tool is protected by the dog member holding steady on the mandrel. When the completion tool reaches the desired location, a pressure pulse opens a chamber between the sleeves to transition to a second released position. The dog member releases from the mandrel to be housed in the chamber, when movement of the mandrel sets the completion tool by the mechanical link, such as shear pins.

Abstract: Systems and methods using enhanced flow control devices are described. The flow control devices can be selectively closed completely or have its effective flow area reduced to restrict production (or injection) by use of a chemical trigger mechanism. In addition, some of the systems described herein deploy specific targeted chemical tracers, dissolvable in the unwanted production fluid (e.g. water or gas). These chemical tracers once dissolved will enter the production stream and be identified at the surface. The identification will determine which segment of the completion is producing the unwanted fluid. According to some embodiments, an appropriate chemical trigger is placed, for example, by pumping down through the tubing and utilizing intelligent completion valve to place the chemical, or by spotting with coiled tubing and bullhead to the formation, or by other methods of chemical placement. The chemical trigger will only trigger the active chemical in the appropriate flow control device.

Abstract: Systems and methods use enhanced flow control devices that can be selectively closed completely or have its effective flow area reduced to restrict production (or injection) by use of a chemical trigger mechanism. In addition, some of the systems deploy specific targeted chemical tracers, dissolvable in the unwanted production fluid (e.g., water or gas). These chemical tracers once dissolved will enter the production stream and be identified at the surface. An appropriate chemical trigger can be placed, for example, by pumping down through the tubing and utilizing intelligent completion valve to place the chemical, or by spotting with coiled tubing and bullhead to the formation. The chemical trigger will only trigger the active chemical in the appropriate flow control device.

Abstract: A panel light includes a light guide plate, L-typed frames and a light bar. The L-typed frames are connected with each other and surround edges of the light guide plate. Each of the L-typed frames includes a first board body, a second board body and a third board body. A gap is formed between the first and second board bodies. The third board body is connected between the first and second board bodies. An accommodating space is defined by the first, second and third board bodies. The edge of the light guide plate is inserted into the accommodating space between the first and second board bodies. The light bar is located on the third board body of one of the L-typed frames, and the light emitting direction of the light bar is toward a light incident surface of the light guide plate.

Abstract: The disclosure provides an optical lens including a body. The body includes a light-incident surface and a light-emitting surface. The light-emitting surface is located at an outer surface of the body. The light-incident surface is located at a bottom surface of the body. The body includes a concave portion located at the center of the bottom surface. The concave portion is dented from the bottom surface to the light-emitting surface for accommodating a light source, and the surface of the concave portion is the light-incident surface. The light-emitting surface includes a dented center light-emitting zone and an arc-shaped peripheral light-emitting zone. The dented center light-emitting zone is located at a center zone of the outer surface of the body. The dented center light-emitting zone is aligned with the center of the bottom surface of the body and is indented in a direction toward the light-incident surface.

Abstract: The disclosure provides a light emitting diode projection bulb including a heat dissipation base, a light emitting diode module, and a annular heat dissipation member. The heat dissipation base includes a bottom surface, a sidewall surrounding the bottom surface, and a annular rim. The annular rim is connected to an end of the sidewall to define a first opening facing toward outside. A surface of the annular rim forms a plurality of first convection holes and a plurality of first locating portions. The light emitting diode module is installed on the bottom surface of the heat dissipation base and emits light toward the first opening. The annular heat dissipation member includes a second opening, a plurality of second convection holes, and a plurality of second locating portions.

Abstract: A light-emitting device comprising a lamp casing, a heat dissipation element and a light-emitting module is provided. A first opening and a second opening are formed on an upper end and a lower end of the lamp casing respectively. An edge of the lamp casing adjacent to the first opening is bended inward to form a bending portion. The heat dissipation element has several carrying portions separated from each other and arranged in radial-shape, and several fins perpendicular to the carrying portions. Each fin is bended downward and vertically from an edge of the carrying portions and extended toward the second opening. The light-emitting module comprises a substrate and several light-emitting elements. An edge of the substrate leans against the bending portion, such that the light-emitting module is sandwiched between the carrying portions and the e bending portion.

Abstract: A mechanism for selectively activating a plurality of downhole pathways is disclosed. The method includes a casing segment which includes a plurality of casing ribs, a valve which includes a sleeve coupled for movement between an open and normally closed position, a rocker member mounted to the sleeve, a dart for pumping in hole including a dart profile matched to the rocker member profile such that the dart profile couples to the rocker member profile when in close proximity and, in turn, the sleeve moves from the closed position to the open position.

Abstract: A LED (Light Emitting Diode) bulb structure includes a base, a plurality of fins and a shell. One end of the base is electrically connected to a power source, and the other end of the base is used for holding a LED light source. The fins are disposed on a surface of the base. The shell encloses the fins, and the shell includes a plurality of first heat-dissipation holes and a plurality of second heat-dissipation holes. The first heat-dissipation holes are arranged around the shell and corresponding to the fins for allowing airflow entering the first heat-dissipation holes to directly pass through each of the fins corresponding to each of the first heat-dissipation holes. The second heat-dissipation holes are arranged around the shell and disposed above the first heat-dissipation holes for enabling the first heat-dissipation holes and the second heat-dissipation holes to conduct thermal convection.

Abstract: A sealing device of enhanced configuration for use in downhole in a well. The device may include an element of elastomeric and unitary construction. At the same time, however, the element may include a substantially cured outer shell disposed about a substantially under-cured inner core. Thus, enhanced robustness and durability may be provided to the device in light of downhole conditions without sacrifice to sealable function of the device.

Abstract: A method for analyzing fluid withdrawn from a subsurface formation includes disposing the withdrawn fluid in a chamber and maintaining the fluid in the chamber substantially at a same temperature and pressure as exists in the subsurface formation. Electric current is passed through the fluid in the chamber using at least one electrode made from a selected metal, the electric current comprising direct current and alternating current of frequency sufficient to determine at least one of (i) resistance of the fluid sample in the chamber directly and (ii) from the direct current determine a polarization resistance of the at least one electrode.