Abstract: A downhole system and method of performing an operational action with the downhole system. The downhole system includes a downhole string having a flow channel therethrough, a first turbine generator for generating electrical energy when a flow rate of a fluid through the flow channel is within a first flow rate range, and a second turbine generator for generating electrical energy when a flow rate of the fluid through the flow channel is within a second flow rate range. A first pulser at a downhole location in the downhole string transmits a pressure pulse communicative of data generated downhole using electrical energy generated by one of the first turbine generator and the second turbine generator. A sensor at a surface location receives the pressure pulse, and a control unit performs the operational action based on the data communicated by the pressure pulse.

Abstract: A setting tool for actuating a downhole component includes an inner tubular configured to be connected in fluid communication with a borehole string, a housing configured to define a first fluid chamber and a second fluid chamber isolated from the first fluid chamber and in fluid communication with the inner tubular, and a setting piston in pressure communication with the second fluid chamber. The setting tool includes a metering module coupled to the housing and disposed at an end of the first fluid chamber, the metering module including a fluid path forming a restriction therein, and an outlet connected to the fluid path. The outlet is configured to be opened to permit fluid to flow out of the first chamber at a controlled rate to generate a differential pressure between the first and second chambers that causes the setting piston to apply a gradually increasing force on the component.

Abstract: A downhole flow control configuration including a housing, a converging-diverging flow path in the housing, the flow path including a first portion including an inlet, a converging section, and a throat section, the first portion preferentially passing a portion of a fluid having a greater subcool, and the converging-diverging flow path further including a second portion comprising a diverging section that recovers fluid pressure lost in the converging section and the throat section, and an outlet and an elongated helical flow path connected to the outlet of the converging-diverging flow path, the helical flow path producing a pressure drop in a fluid flowing therein during use.

Abstract: A flow-off telemetry system and method of communicating information from a downhole location in a borehole to a surface location while fluid circulation is off. A string is conveyed in the wellbore to define an inner bore and an annulus. During a flow-off condition, an inner bore sealing element closes the inner bore to create a first standing column of fluid in the inner bore, and an annulus sealing element closes the annulus to form a second standing column of fluid in the annulus. A bypass valve in the string at a downhole location between the first standing column of fluid and the second standing column of fluid is activated to generate a pressure pulse including information for performing an action. The pressure pulse is received at a pressure sensor at the surface location and a controller performs an action in response to the information in the pressure pulse.

Abstract: A downhole system includes a first tubular having a terminal end including a first connector portion, an inlet, an inner surface, an outer surface, and a first conduit extending between the inner surface and the outer surface fluidically exposed at the terminal end. A second tubular including a terminal end section having a second connector portion coupled to the first connector portion to form a joint, an inner surface section, an outer surface section, and a second conduit extending between the inner surface section and the outer surface section and fluidically exposed at the terminal end section. The first conduit is fluidically connected to the second conduit across the joint.

Abstract: A submersible pump assembly has a seal section between the motor and the well fluid pump, the seal section having a housing, a shaft and a thrust bearing unit. The thrust bearing unit includes a thrust runner mounted to the shaft that rotates against a thrust bearing base fixed in the housing. An annular, metal thrust runner wave spring has an inner diameter surface in contact with the shaft and an outer diameter surface in contact with the runner bore. The wave spring has a transverse width between the inner diameter surface and the outer diameter surface that is elastically deflectable, exerting an inward bias force against the shaft and an outward bias force against the runner bore.

Abstract: A downhole tool for forming a seal in a wellbore includes a housing configured for attachment to a string usable to transport the tool in the wellbore to a target depth; a holding chamber disposed within the housing, the holding chamber configured to receive a combination of a metal, a metal oxide, and a negative thermal expansion material in the holding chamber; an initiator operable to initiate a chemical reaction; a pressure applicator configured to apply pressure to seal material in the holding chamber; and an opening in a surface of the housing through which the seal material is expellable from the holding chamber.

Abstract: A pumping system is configured to be deployed in a well that has a vertical portion and a lateral portion. The pumping system includes a pump positioned in the vertical portion, a velocity tube assembly that extends from the vertical portion into the lateral portion and a multiphase diverter connected between the pump and the velocity tube assembly. The multiphase diverter includes a housing and a plurality of ejection ports that extend through the housing at a downward angle.

Abstract: A gas pulse jet pump for use with a fluid transfer system is provided. The gas pulse jet pump includes a main body including at least one suction chamber configured to receive production fluid. The gas pulse jet pump further includes an inlet configured to receive the production fluid into the gas pulse jet pump, at least one valve configured to regulate flow of the production fluid through the gas pulse jet pump, at least one gas injection port configured to intermittently inject high pressure gas into the at least one suction chamber, and an outlet configured to receive the production fluid from the at least one suction chamber and discharge the production fluid from the gas pulse jet pump.

Abstract: A method includes inserting a flexible cable into a cleaning region of a channel of a component via a cleaning port, rotating the flexible cable about an axis within the channel to interact a tip with deposits disposed within the cleaning region of the channel, moving the flexible cable within the cleaning region of the channel along a length of the channel, and removing portions of the deposits from the cleaning region of the channel via a second port. The flexible cable includes the axis and the tip. A diameter of the tip is different than a diameter of the flexible cable. The tip is configured to loosen the portions of the deposits.

Abstract: A method for operation in wellbore includes contacting a downhole article comprising a cyanate ester composite with a treatment fluid comprising propylene carbonate at a temperature of about 25° C. to about 300° C.; and disintegrating the downhole article.

Abstract: A valve assembly includes a valve body and an opening extending through the valve body along a longitudinal axis. The valve assembly also includes a valve member arranged within the opening, the valve member being movable, along the longitudinal axis, between an open position and a closed position. The valve assembly includes an upper seal positioned to seal against at least a first portion of the valve body. The valve assembly includes a lower seal positioned to seal against at least a second portion of the valve body, wherein both the upper seal and the lower seal travel with the valve member as the valve member moves between the open position and a closed position.

Abstract: A downhole fluid analysis system includes an optical sensor comprising, which includes a light source configured to emit light comprising a plurality of wavelengths, a light detector, and an optical tip through which at least a portion of the light travels and returns to the detector, wherein the incident angle of the light causes total internal reflection within the optical tip. The system further includes a piezoelectric helm resonator that generates a resonance response in response to an applied current, and an electromagnetic spectroscopy sensor positioned symmetrically with respect to the piezoelectric helm resonator in at least one direction. The light may be reflected in the optical tip at one or more reflection points, and each reflection point may generate an evanescent wave in a medium surrounding the optical tip. The light may be internally reflected in the optical tip at a plurality of reflection points.

Abstract: A downhole acoustic transmitter has a piezoelectric transducer, an enclosure in which the piezoelectric transducer is housed, a transducer preload means which applies a selected compressive force against the transducer such that a mechanical preload is applied to the transducer, and an acoustic tuning element which has a first end coupled to the transducer preload means or the transducer, and an open second end. The acoustic tuning element is not coupled to anything but the transducer preload means or transducer, so the transducer preload means effectively has a second open end and thus can maintain the same preload compressive force on the transducer even when the transmitter is subjected to tension and compressive forces during operation.

Abstract: A downhole fluid analysis system includes an optical sensor that includes a light source configured to emit light, a light detector, and an optical tip optically coupled to the light source and the light detector. At least a portion of the light emitted from the light source travels through the optical tip and returns to the detector, wherein the optical tip has a bi-conical shape. The system further includes a piezoelectric helm resonator, in which the piezoelectric helm resonator generates a resonance response in response to an applied current, and an electromagnetic spectroscopy sensor positioned symmetrically with respect to the piezoelectric helm resonator in at least one direction. In some embodiments, the optical tip includes a first conical portion and a second conical portion.

Abstract: An electrical submersible pump has a tubular pump housing containing centrifugal pump stages and a rotatable shaft. A bearing mounts in the housing and has a shaft passage through which the shaft extends. A sensor hole extends through the housing and into the bearing. A temperature sensor is located within the sensor hole. The sensor hole has a closed end radially outward from the shaft passage. A sensor line leads from the temperature sensor to a sensing unit mounted at an upper or a lower end of the pump assembly.

Abstract: An apparatus for generating electrical power includes at least one power generation assembly having a housing including a fluid chamber, one or more conductive coils surrounding the fluid chamber, a reciprocating magnetic shuttle dividing the fluid chamber into a first volume and a second volume. The apparatus also includes at least one switching assembly configured to alternate between a first operating state where the first volume is in fluid communication with a first fluid pressure source, and a second operating state where the first volume is in fluid communication with a second fluid pressure source. The switching assembly is configured to alternate between the first operating state and the second operating state to alternate a direction of differential pressure between the first volume and the second volume and cause the magnetic shuttle to move in a reciprocating motion and generate an electric current in the one or more conductive coils.

Abstract: A method for operation in wellbore, the method comprises: pumping a fluid barrier into a wellbore through a tubular, the fluid barrier being operable to separate a cement slurry from a second fluid; the fluid barrier comprising a polyurethane member derived from a polyurethane forming composition comprising a para-phenylene diisocyanate terminated polycarbonate prepolymer and an aromatic diol

Abstract: An apparatus includes a housing configured to be disposed in a borehole in a resource bearing formation, the housing including an axially extending fluid conduit configured to receive borehole fluid, and a seating assembly including a convertible component that is configured to be actuated to move the convertible component in a radial direction between an open position and a seating position. The convertible component extends radially into the fluid conduit and forms a landing seat for an object when in the seating position, and the convertible component allows passage of the object therethrough when in the open position.

Abstract: An ultrasonic flow meter system includes a conduit defining a channel, at least one pair of first transducers, at least one second transducer, and a processor. The pair of first transducers is mounted on the conduit and includes a transmitting transducer and a receiving transducer for generating a first responsive signal. The transmitting transducer and the receiving transducer are arranged on a chordal path. The second transducer is mounted on the conduit for generating a second responsive signal. The processor is configured to receive the first responsive signal and the second responsive signal, select one responsive signal according to a relationship of the first responsive signal and noise thereof and a relationship of the second responsive signal and noise thereof, and determine a flow rate of a flow medium according to the selected responsive signal. A method for measuring the flow rate of the fluid medium is also provided.