Abstract: Assemblies and methods of use are disclosed for determining a position of a body within a tubing section. A signal generator coupled to the body is operable to generate a pressure wave in response to detecting a detectable portion of the tubing section when the body is moved relative to the tubing section.

Abstract: A system for use in completing a wellbore includes a portion of a workstring extending into the wellbore such that a first annulus is created between the workstring and a portion of the wellbore. The portion of the workstring is inserted to a depth corresponding to a base, such as a sump packer that defines a lower boundary of the completion zone. The zone of deployment may be sealed uphole by a second packer included in the workstring. A service tool having an inner sleeve, an outer sleeve, and a rotating mandrel positioned therebetween is provided to deliver fluids and execute completion operations as facilitated by rotation of the mandrel. Rotation of the mandrel allows for control of multiple fluid flow paths, each of which may correspond to a completion process within the zone, without displacement of the service tool in an uphole or downhole direction.

Abstract: A method and apparatus that includes positioning a completion string that has an internal passageway and that has an external surface that at least partially defines an external region within a wellbore; isolating a zone of the external region from a wellbore hydrostatic pressure; measuring a pressure within the external region of the isolated zone; determining whether the pressure within the external region of the isolated zone is within a predetermined pressure range; and operating a valve that controls a flow of a fluid through a flow path from the internal region to the external region of the isolated zone when the pressure within the external region is outside of the predetermined pressure range.

Abstract: A method and apparatus that includes an elongated base pipe having an external surface at least partially defining an external region and an internal surface at least partially defining an internal region; and a pressure maintenance device disposed in the base pipe and comprising: a flow path that extends between the internal region and the external region; and a valve having a gas charged chamber, the valve allowing the flow of a fluid from the internal region to the external region through the first flow path when a pressure differential between a pressure associated with the internal region and a pressure associated with the gas charged chamber is less than a maximum pressure threshold and when a pressure differential between the external region and the pressure associated with the gas charged chamber is greater than a minimum pressure threshold.

Abstract: A system for use in completing a wellbore includes a portion of a workstring extending into the wellbore such that a first annulus is created between the workstring and a portion of the wellbore. The portion of the workstring is inserted to a depth corresponding to a base, such as a sump packer that defines a lower boundary of the completion zone. The zone of deployment may be sealed uphole by a second packer included in the workstring. A service tool having an inner sleeve, an outer sleeve, and a rotating mandrel positioned therebetween is provided to deliver fluids and execute completion operations as facilitated by rotation of the mandrel. Rotation of the mandrel allows for control of multiple fluid flow paths, each of which may correspond to a completion process within the zone, without displacement of the service tool in an uphole or downhole direction.

Abstract: An exemplary downhole system includes a completion string positioned within a wellbore and providing at least an upper seal bore and a downhole device that includes a sliding sleeve. A service tool is extendable within the completion string and includes a shifting tool assembly and provides a mandrel, a shifting tool coupled to the mandrel, and upper equalization seals arranged on the mandrel and sealingly engageable with the upper seal bore. The shifting tool is engageable with the sliding sleeve to move the downhole device at least partially between a closed position, where a pressure differential between a subterranean formation and an interior of the completion string is assumed by primary sealing elements of the downhole device, and an open position, where the pressure differential is assumed by at least the upper equalization seals.

Abstract: A method and apparatus that includes an elongated base pipe having an external surface at least partially defining an external region and an internal surface at least partially defining an internal region; and a pressure maintenance device disposed in the base pipe and includes a first flow path that extends between an opening in the external surface and an opening in the internal surface; a first valve that controls the flow of a first fluid through the first flow path; a first pressure differential sensor that controls the actuation of the first valve and is in fluid communication with the external region; and a pressurized fluid source in fluid communication with the first pressure differential sensor; wherein a first pressure differential threshold associated with the first pressure differential sensor is the difference between a pressure within the external region and the pressurized fluid source.

Abstract: Assemblies and methods of use are disclosed for determining a position of a body within a tubing section. A signal generator coupled to the body is operable to generate a pressure wave in response to detecting a detectable portion of the tubing section when the body is moved relative to the tubing section.

Abstract: A method and apparatus that includes an elongated base pipe having an external surface at least partially defining an external region and an internal surface at least partially defining an internal region; and a pressure maintenance device disposed in the base pipe and comprising: a flow path that extends between the internal region and the external region; and a valve having a gas charged chamber, the valve allowing the flow of a fluid from the internal region to the external region through the first flow path when a pressure differential between a pressure associated with the internal region and a pressure associated with the gas charged chamber is less than a maximum pressure threshold and when a pressure differential between the external region and the pressure associated with the gas charged chamber is greater than a minimum pressure threshold.

Abstract: Assemblies and methods of use are disclosed for determining a position of a body within a tubing section. A signal generator coupled to the body is operable to generate a pressure wave in response to detecting a detectable portion of the tubing section when the body is moved relative to the tubing section.

Abstract: A method and apparatus that includes positioning a completion string that has an internal passageway and that has an external surface that at least partially defines an external region within a wellbore; isolating a zone of the external region from a wellbore hydrostatic pressure; measuring a pressure within the external region of the isolated zone; determining whether the pressure within the external region of the isolated zone is within a predetermined pressure range; and operating a valve that controls a flow of a fluid through a flow path from the internal region to the external region of the isolated zone when the pressure within the external region is outside of the predetermined pressure range.

Abstract: An exemplary downhole system includes a completion string positioned within a wellbore and providing at least an upper seal bore and a downhole device that includes a sliding sleeve. A service tool is extendable within the completion string and includes a shifting tool assembly and provides a mandrel, a shifting tool coupled to the mandrel, and upper equalization seals arranged on the mandrel and sealingly engageable with the upper seal bore. The shifting tool is engageable with the sliding sleeve to move the downhole device at least partially between a closed position, where a pressure differential between a subterranean formation and an interior of the completion string is assumed by primary sealing elements of the downhole device, and an open position, where the pressure differential is assumed by at least the upper equalization seals.

Abstract: A method and apparatus that includes an elongated base pipe having an external surface at least partially defining an external region and an internal surface at least partially defining an internal region; and a pressure maintenance device disposed in the base pipe and includes a first flow path that extends between an opening in the external surface and an opening in the internal surface; a first valve that controls the flow of a first fluid through the first flow path; a first pressure differential sensor that controls the actuation of the first valve and is in fluid communication with the external region; and a pressurized fluid source in fluid communication with the first pressure differential sensor; wherein a first pressure differential threshold associated with the first pressure differential sensor is the difference between a pressure within the external region and the pressurized fluid source.

Abstract: Assemblies and methods of use are disclosed for determining a position of a body within a tubing section. A signal generator coupled to the body is operable to generate a pressure wave in response to detecting a detectable portion of the tubing section when the body is moved relative to the tubing section.

Abstract: An image system configured to record a scanned image of an area. The system includes a single two-dimensional (2D) imager and a rotatable mirror. The 2D imager is formed of a two-dimensional (2D) array of light detectors. The 2D imager is operable in a line-scan mode effective to individually sequence an activated line of light detectors at a time. The rotatable mirror is configured to rotate about an axis parallel to a plane defined by the rotatable mirror. The rotation is effective to vary an angle of the rotatable mirror to pan a projected image of the area across the 2D imager. The angle of the rotatable mirror and the activated line of the 2D imager are synchronized such that the scanned image recorded by the 2D imager is inverted with respect to the projected image.

Abstract: An image system configured to record a scanned image of an area. The system includes a single two-dimensional (2D) imager and a rotatable mirror. The 2D imager is formed of a two-dimensional (2D) array of light detectors. The 2D imager is operable in a line-scan mode effective to individually sequence an activated line of light detectors at a time. The rotatable mirror is configured to rotate about an axis parallel to a plane defined by the rotatable mirror. The rotation is effective to vary an angle of the rotatable mirror to pan a projected image of the area across the 2D imager. The angle of the rotatable mirror and the activated line of the 2D imager are synchronized such that the scanned image recorded by the 2D imager is inverted with respect to the projected image.

Abstract: A multi-view image system that includes a single camera configured to capture an image, and a transreflective device. The transreflective device is operable to a transparent-state where light passes through the transreflective device to provide the camera a first image of an area from a first perspective. The transreflective device is also operable to a reflective-state where light is reflected by the transreflective device to provide the camera a second image of the area from a second perspective distinct from the first perspective. The system may also include a minor arrangement that cooperates with the transreflective device to provide the camera the first image when the transreflective device is in the transparent-state, and the second image when the transreflective device in in the reflective-state.

Abstract: A scrubber for controlling carbon dioxide levels in a shipping container containing respiring produce is disclosed. The scrubber is relatively small, utilizes a gas-selective membrane having a CO2/O2 selectivity ratio greater than 1:1, and fits inside the shipping container (such as a sea van container). In contrast to current methods of controlling CO2 levels in shipping containers, such as the use of hydrated lime, the scrubbers of the present invention are efficient, relatively inexpensive, do not take up shipping space within the container, and do not present handling or disposal issues. A method for controlling the carbon dioxide levels inside a shipping container containing respiring produce, utilizing the carbon dioxide scrubbers defined, is also disclosed.

Abstract: A biopsy device and method may be used to obtain a tissue sample, such as a breast tissue biopsy sample. A biopsy device may include an outer cannula having a distal piercing tip, a cutter lumen, and a cutter tube that rotates and translates past a side aperture in the outer cannula to sever a tissue sample. An exemplary sample capturing structure (e.g., platter, barrel, etc.) has a plurality of sample cavities (e.g., radially symmetric, revolver handgun orientation, etc.) that are aligned one at a time (e.g., manually, etc.) to capture and store one or more tissue samples.

Abstract: Audible and/or visible ringback signals are provided to a calling party by wired or wireless communication equipment in a local region associated with a called party, and not by the wide-area network(s) via which the calling party communicates with the called party. The non-network ringback signals are provided after a communication channel has been established between the calling party and the called party, but before the called party handles substantive communication content from the calling part. Non-network ringback signals may be selected based on various criteria, such as an identity of the calling party, capability of calling party communication equipment, or a type of information (for example, video, audio, or data) exchangeable via the communication channel.