Abstract: Systems and methods for isolating applications associated with multiple tenants within a computing platform receive a request from a client associated with a tenant for running an application on a computing platform. Hosts connected to the platform are associated with a network address and configured to run applications associated with multiple tenants. A host is identified based at least in part on the request. One or more broadcast domain(s) including the identified hosts are generated. The broadcast domains are isolated in the network at a data link layer. A unique tenant identification number corresponding to the tenant is assigned to the broadcast domains. In response to launching the application on the host: the unique tenant identification number is assigned to the launched application and is added to the network address of the host; and the network address of the host is sent to the client associated with the tenant.

Abstract: Provided herein are processes for manufacturing recombinant ranibizumab or a ranibizumab variant that include providing a liquid comprising recombinant ranibizumab or a ranibizumab variant that is substantially free of cells; capturing the recombinant ranibizumab or the ranibizumab variant in the liquid using an affinity chromatography column, wherein the eluate of the affinity chromatography column comprises the recombinant ranibizumab or the ranibizumab variant; purifying the recombinant ranibizumab or the ranibizumab variant in the eluate of step (b) using a first cation exchange chromatography column and buffers that have a pH of about pH 5.5 to about 7.

Abstract: Provided is an electrically surface-controlled subsurface safety valve (ESCSSV). The ESCSSV, in one example, includes an outer housing comprising a central bore extending axially through the housing that is configured to convey production fluids there through. The ESCSSV, in this embodiment, further includes a valve closure mechanism disposed proximate a downhole end of the central bore, and a bore flow management actuator disposed in the central bore and configured to move between a closed state and a flow state to engage or disengage the valve closure mechanism to determine a flow condition of the production fluids through the central bore. The ESCSSV, in this embodiment, additionally includes an electric valve assembly fluidically coupled to the bore flow management actuator and configured to select between a section pressure or the annulus pressure to control the bore flow management actuator and determine the flow condition of production fluids through the central bore.

Abstract: A gas separation and injection system includes a lower separator that receives and separates a production stream into higher and lower density streams, a turbine-compressor including a turbine that receives the lower density stream to rotate a shaft that drives a compressor and subsequently recombines the lower and higher density streams into a recombined production stream. An upper separator receives the recombined production stream and includes a gas inlet tube that conveys a gas stream to the compressor to produce a compressed gas stream. A shuttle valve assembly axially interposes the upper separator and the turbine-compressor and includes a mandrel assembly received within a body and having the gas inlet tube extending within the mandrel assembly, a valve seat secured to the gas inlet tube, a piston movably arranged within the inner annulus between closed and open positions, and a shuttle valve operatively coupled to the piston.

Abstract: An optical fiber cable includes a jacket and a plurality of stranded core subunits, each core subunit comprising a flexible sheath and a plurality of ribbons arranged in a ribbon group, wherein each ribbon of the plurality of ribbons comprises a plurality of connected fibers such that 50-70% of the cross-sectional area inside the sheath is occupied by the connected fibers. The flexible sheath may be an extruded PVC material that conforms to the shape of the ribbon stack and keeps all of the ribbons acting as a unitary body during bending.

Abstract: An optical fiber cable includes a jacket and a plurality of stranded core subunits, each core subunit comprising a flexible sheath and a plurality of ribbons arranged in a ribbon group, wherein each ribbon of the plurality of ribbons comprises a plurality of connected fibers such that 50-70% of the cross-sectional area inside the sheath is occupied by the connected fibers. The flexible sheath may be an extruded PVC material that conforms to the shape of the ribbon stack and keeps all of the ribbons acting as a unitary body during bending.

Abstract: A flapper valve assembly including a tubular forming an interior passageway; a valve seat forming a portion of the interior passageway; a flapper plate that is pivotably mounted to the tubular at a pivot point such that the flapper plate is pivotable between a valve closed and a valve open position; and a spring engaging the flapper plate such that the flapper plate is biased towards the valve closed position; wherein, when the flapper plate is in the valve open position, the spring engages a top of the flapper plate at a first distance from the pivot point; wherein, when the flapper plate is in the valve closed position, the spring engages the top of the flapper plate at a second distance from the pivot point; and wherein the second distance is greater than the first distance.

Abstract: A safety valve may include: an outer housing comprising a central bore extending axially through the outer housing; a flow tube including: a translating sleeve; and a flow tube main body disposed within the translating sleeve, wherein the flow tube main body has an upper end and a lower end; a piston operable to transmit a force to the translating sleeve; a flapper valve disposed on a distal end of the outer housing; and an electromagnet assembly operable to maintain the safety valve in an open state.

Abstract: A flapper valve assembly that includes a tubular forming an interior passageway and comprising an internal shoulder; a valve seat forming a portion of the interior passageway and spaced from the internal shoulder to form a flapper chamber; a flapper plate that is pivotably mounted to the tubular at a pivot point and positioned within the flapper chamber; wherein the flapper plate is pivotable within the flapper chamber between a valve closed and valve open position; and a first spring extending within the flapper chamber and engaging the flapper plate such that the flapper plate is biased towards the valve closed position; wherein the first spring comprises spaced right and left arms that are in contact with the flapper plate; and wherein, when the flapper plate is in the valve closed position, each of the right and left arms extends away from the flapper plate and towards the internal shoulder.

Abstract: A subsurface safety valve for controlling fluid flow in a well conduit incorporating a pressure equalizing feature. The safety valve includes a body member having a longitudinal bore, a valve actuator having axial movement within the longitudinal bore and a valve that restricts flow through the longitudinal bore. An equalization fluid flow passageway provides a fluid path between the longitudinal bore above the valve and the longitudinal bore below the valve. An equalizing device is located within the equalization fluid flow passageway and configured to resist sand and debris effects on its operation, the equalizing device regulating flow through the equalization fluid flow passageway and operated by the valve actuator prior to opening the valve.

Abstract: A sliding sleeve well device has a first sliding sleeve received in a second sliding sleeve. A polymer seal having a polymer sealing surface is between and in sealing contact with the sliding sleeves. A metal-to-metal seal is between the sliding sleeves and actuable into sealing contact with the first and second sliding sleeves.

Abstract: An apparatus includes a cylindrical housing having a hinge, a flapper attached to the hinge, and a slidable element is within the cylindrical housing, wherein the flapper can rotate from a first flapper position to a second flapper position. The slidable element is slidable from a first position to a second position and engages with the flapper at the first position to prevent the flapper from moving to the second flapper position. The flapper is movable to the second flapper position when the slidable element is disengaged from the flapper. The apparatus also includes a latching mechanism attached to the slidable element movable from a first latching mechanism position to a second latching mechanism position. The slidable element is at the first position when the latching mechanism is at the first latching mechanism position and at the second position when the latching mechanism is at the second latching mechanism position.

Abstract: Wellbore systems containing a hydraulically regulated primary safety valve may have their hydraulic regulation transferred to an insert safety valve disposed in a nipple. Transfer of the hydraulic regulation may take place mechanically, such as through axial displacement of a sliding sleeve or by replacement of a hydraulic spool. Wellbore systems configured for axial displacement of a switching mechanism may comprise: a tubing string comprising a nipple and a primary safety valve, the primary safety valve being disposed in the tubing string above or below the nipple; a control line and a balance line in hydraulic communication with the primary safety valve and in latent hydraulic communication with an internal flow pathway within the nipple; and a switching mechanism that is axially displaceable to establish hydraulic communication between an insert safety valve positioned in a bore of the nipple and both the control line and the balance line.

Abstract: A composition is provided comprising a cellulose ester component that comprises at least one cellulose ester; and an elastomeric component that comprises at least one elastomer, where the elastomeric component comprises 30 wt % or more of the composition, and where the composition is thermoplastic. Processes for producing the compositions as well as articles made using these compositions, such as automotive interior components, are also provided.

Abstract: Embodiments of an equalizing device for use with a safety valve and a safety valve are provided herein. In one embodiment, the equalizing device includes at least a tubular having a central bore extending axially there through, the tubular having a ball seat. The equalizing device may further include a ball positioned proximate the ball seat, the ball configured to move from a first position engaged with the ball seat to a second position disengaged from the ball seat to equalize pressure across the safety valve, and an arced ring positioned radially outside the ball, the arced ring configured to keep the ball engaged with the ball seat when in the first position and maintain the ball radially outside the ball seat when in the second position.

Abstract: A flapper valve assembly that includes a tubular forming an interior passageway and comprising an internal shoulder; a valve seat forming a portion of the interior passageway and spaced from the internal shoulder to form a flapper chamber; a flapper plate that is pivotably mounted to the tubular at a pivot point and positioned within the flapper chamber; wherein the flapper plate is pivotable within the flapper chamber between a valve closed and valve open position; and a first spring extending within the flapper chamber and engaging the flapper plate such that the flapper plate is biased towards the valve closed position; wherein the first spring comprises spaced right and left arms that are in contact with the flapper plate; and wherein, when the flapper plate is in the valve closed position, each of the right and left arms extends away from the flapper plate and towards the internal shoulder.

Abstract: A flapper valve assembly including a tubular forming an interior passageway; a valve seat forming a portion of the interior passageway; a flapper plate that is pivotably mounted to the tubular at a pivot point such that the flapper plate is pivotable between a valve closed and a valve open position; and a spring engaging the flapper plate such that the flapper plate is biased towards the valve closed position; wherein, when the flapper plate is in the valve open position, the spring engages a top of the flapper plate at a first distance from the pivot point; wherein, when the flapper plate is in the valve closed position, the spring engages the top of the flapper plate at a second distance from the pivot point; and wherein the second distance is greater than the first distance.

Abstract: An apparatus includes a cylindrical housing having a hinge, a flapper attached to the hinge, and a slidable element is within the cylindrical housing, wherein the flapper can rotate from a first flapper position to a second flapper position. The slidable element is slidable from a first slidable position to a second slidable position and engages with the flapper at the first slidable position to prevent the flapper from moving to the second flapper position. The flapper is movable to the second flapper position when the slidable element is disengaged from the flapper. The apparatus also includes a latching mechanism attached to the slidable element movable from a first latching mechanism position to a second latching mechanism position. The slidable element is at the first slidable position when the latching mechanism is at the first latching mechanism position and at the second slidable position when the latching mechanism is at the second latching mechanism position.

Abstract: A fiber optic cable includes a core and a jacket surrounding the core. The jacket includes a base layer formed from a foamed material including a polymer. A surface layer of the jacket is formed from a second composition that differs from the first composition and also includes the polymer. An interface bonds the surface and base layers to one another.

Abstract: A fiber optic cable includes a core and a jacket surrounding the core. The jacket includes a base layer, a surface layer defining an exterior surface of the fiber optic cable, and an interface between the surface and base layers. The base layer is formed from a first composition that includes polyethylene. The surface layer has a thickness of at least 300 micrometers and is formed from a second composition that differs from the first composition. The second composition includes polyethylene as well as one or more additives, including paracrystalline carbon. The interface cohesively bonds the surface and base layers to one another at least in part due to molecular chain entanglement of the polyethylene of the first and second compositions.