Abstract: Wireline valves with internal tool trap flappers are provided. In one embodiment, a wireline valve includes a main body with a bore sized to allow a downhole tool to pass through the main body of the wireline valve and a flapper positioned within the main body. The flapper is positioned with respect to the bore of the wireline valve such that the flapper can be moved between an open position that permits passage of the downhole tool through the bore of the main body of the wireline valve and a closed position that prevents passage of the downhole tool through the bore of the main body of the wireline valve in at least one direction. Additional systems, devices, and methods are also disclosed.

Abstract: The present disclosure generally relates to an annular blowout preventer (“BOP”) apparatus for sealing a wellbore. In particular, the annular BOP includes a body comprising a vertical bore extending therethrough, an upper packing element located in the body, a lower packing element located in the body and spaced axially from the upper packing element, and a piston configured to move the upper and lower packing elements radially with respect to the vertical bore. The annular BOP provides for bi-directional sealing across the annular BOP. In other embodiments, the annular BOP may include only a single packing element configured to provide for bi-directional sealing across the annular BOP.

Abstract: Blowout preventers with pressure-balanced operating shafts are provided. In one embodiment, a blowout preventer includes a hollow body having a bore and a ram cavity. The blowout preventer also includes a pair of opposing rams disposed in the ram cavity and a shaft that extends through both rams of the pair of opposing rams. Additional systems, devices, and methods are also disclosed.

Abstract: Wireline valves with internal tool trap flappers are provided. In one embodiment, a wireline valve includes a main body with a bore sized to allow a downhole tool to pass through the main body of the wireline valve and a flapper positioned within the main body. The flapper is positioned with respect to the bore of the wireline valve such that the flapper can be moved between an open position that permits passage of the downhole tool through the bore of the main body of the wireline valve and a closed position that prevents passage of the downhole tool through the bore of the main body of the wireline valve in at least one direction. Additional systems, devices, and methods are also disclosed.

Abstract: The present disclosure generally relates to an annular blowout preventer (“BOP”) apparatus for sealing a wellbore. In particular, the annular BOP includes a body comprising a vertical bore extending therethrough, an upper packing element located in the body, a lower packing element located in the body and spaced axially from the upper packing element, and a piston configured to move the upper and lower packing elements radially with respect to the vertical bore. The annular BOP provides for bi-directional sealing across the annular BOP. In other embodiments, the annular BOP may include only a single packing element configured to provide for bi-directional sealing across the annular BOP.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.

Abstract: A valve comprises a housing including a first chamber, a second chamber, and a neutral chamber. In addition, the valve comprises a stem disposed within the housing. Further, the valve comprises a first valve member at least partially disposed in the first chamber and connected to the stem and a second valve member at least partially disposed in the second chamber and connected to the stem. The first valve member has a closed position seated in a first annular valve seat and an open position spaced apart from the first valve seat. The second valve member has a closed position seated in a second annular valve seat and an open position spaced apart from the second valve seat. Moreover, the valve comprises a biasing member configured to bias the second valve member to the closed position and the first valve member to the open position.