A passive explosion isolation valve (10) is provided that comprises vertically-oriented gate members (40, 42) configured to close automatically in response to an energetic event occurring downstream of the valve. The valve (10) may be optionally equipped with a valve seat cleaning assembly (46) configured to removed accumulated particulate material away from the area of the valve seat (48) and/or one or more latch assemblies (44) configured to secure the gate members (40, 42) in the closed position following closure of the valve (10) in response to an energetic event.

A gate valve for controlling flow of a fluid therethrough is provided. The gate valve includes a valve body having an outer surface, a bore, a valve cavity, a first seat pocket, a second seat pocket, and first and second fluid ports extending from the outer surface to the first and second seat pockets, respectively. First and second seats are positioned respectively within the first and second seat pockets. The seats include circumferential fluid channels and one or more conduits in fluid communication with the fluid ports for permitting a repair fluid to be injected into the ports to the faces of the seats. A gate is slidably positioned within the valve cavity between the first seat and the second seat for controlling flow of a fluid through the valve. Sand shields are also provided at the rear of the seats to capture particulates and to bias the seats against the gate.

A gate valve for controlling flow of a fluid therethrough is provided. The gate valve includes a valve body having an outer surface, a bore, a valve cavity, a first seat pocket, a second seat pocket, and first and second fluid ports extending from the outer surface to the first and second seat pockets, respectively. First and second seats are positioned respectively within the first and second seat pockets. The seats include circumferential fluid channels and one or more conduits in fluid communication with the fluid ports for permitting a repair fluid to be injected into the ports to the faces of the seats. A gate is slidably positioned within the valve cavity between the first seat and the second seat for controlling flow of a fluid through the valve. Sand shields are also provided at the rear of the seats to capture particulates and to bias the seats against the gate.

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.

A member that is a single element for controlling flow through an inflow control device, has anisotropic density configured to move the member relative to the inflow control device such that the inflow control device allows, fully blocks, or partially blocks flow from a zone to a production string based on a density of a fluid flowing into the inflow control device from the zone.

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.

A member that is a single element for controlling flow through an inflow control device, has anisotropic density configured to move the member relative to the inflow control device such that the inflow control device allows, fully blocks, or partially blocks flow from a zone to a production string based on a density of a fluid flowing into the inflow control device from the zone.

A fluid flow diverter is provided that includes a diverter body having four ports, a rotating plenum located within the diverter body, and a purge fluid assembly that supplies a purge fluid to the plenum. The plenum has two stop positions that each define a fluid flow path through the diverter. In the first fluid flow path, a first fluid stream goes between the first and second ports, and a second fluid stream goes between the fourth and third ports. In the second flow path, a first fluid stream goes between the first and third ports, and a second fluid stream goes between the fourth and second ports. The purge fluid supplied to the plenum creates a positive pressure fluid barrier that prevents or minimizes cross-contamination of the two fluid streams through the diverter. Also provided is a regenerative thermal oxidizer that includes such a fluid flow diverter.

A fluid flow diverter is provided that includes a diverter body having four ports, a rotating plenum located within the diverter body, and a purge fluid assembly that supplies a purge fluid to the plenum. The plenum has two stop positions that each define a fluid flow path through the diverter. In the first fluid flow path, a first fluid stream goes between the first and second ports, and a second fluid stream goes between the fourth and third ports. In the second flow path, a first fluid stream goes between the first and third ports, and a second fluid stream goes between the fourth and second ports. The purge fluid supplied to the plenum creates a positive pressure fluid barrier that prevents or minimizes cross-contamination of the two fluid streams through the diverter. Also provided is a regenerative thermal oxidizer that includes such a fluid flow diverter.

A fluid flow diverter is provided that includes a diverter body having four ports, a rotating plenum located within the diverter body, and a purge fluid assembly that supplies a purge fluid to the plenum. The plenum has two stop positions that each define a fluid flow path through the diverter. In the first fluid flow path, a first fluid stream goes between the first and second ports, and a second fluid stream goes between the fourth and third ports. In the second flow path, a first fluid stream goes between the first and third ports, and a second fluid stream goes between the fourth and second ports. The purge fluid supplied to the plenum creates a positive pressure fluid barrier that prevents or minimizes cross-contamination of the two fluid streams through the diverter. Also provided is a regenerative thermal oxidizer that includes such a fluid flow diverter.