A casing joint assembly and methods for producing an annulus gas cap using the casing joint assembly. The casing joint assembly comprises a first valve and a second valve to control fluid pressure in the sealed annulus between the casing string and a wall of the well bore or another casing string.

A casing joint assembly and methods for producing an annulus gas cap using the casing joint assembly. The casing joint assembly comprises a first valve and a second valve to control fluid pressure in the sealed annulus between the casing string and a wall of the well bore or another casing string.

A ram or shutter device includes rams operable between an open position withdrawn from a bore to a closed position to contact a tubular disposed in the bore, the rams may not seal the bore. A well system in accordance to an aspect of the disclosure includes an assembly providing a bore in communication with a wellbore, a device operable to shear a tubular disposed in the bore, and a shutter device having rams operable between an open position withdrawn from the bore to a closed position contacting the tubular in the bore.

A ram or shutter device includes rams operable between an open position withdrawn from a bore to a closed position to contact a tubular disposed in the bore, the rams may not seal the bore. A well system in accordance to an aspect of the disclosure includes an assembly providing a bore in communication with a wellbore, a device operable to shear a tubular disposed in the bore, and a shutter device having rams operable between an open position withdrawn from the bore to a closed position contacting the tubular in the bore.

A rotating control device can include a groove formed on a housing, and an elastomeric ring isolating inner and outer portions of the groove, the elastomeric ring permitting fluid communication between the inner and outer portions of the groove in response to a pressure differential from the inner to the outer portion of the groove. A method can include forming a circumferentially extending groove, providing fluid communication between the groove and an annular area isolated between rotary seals, and positioning an elastomeric ring in the groove, the elastomeric ring preventing fluid flow from an exterior of the groove to the annular area, and permitting fluid flow from the annular area to the exterior of the groove. Another rotating control device can include an elastomeric ring in a groove, and a passage in a housing that provides fluid communication between the groove and an annular area between rotary seals.

A rotating control device can include a groove formed on a housing, and an elastomeric ring isolating inner and outer portions of the groove, the elastomeric ring permitting fluid communication between the inner and outer portions of the groove in response to a pressure differential from the inner to the outer portion of the groove. A method can include forming a circumferentially extending groove, providing fluid communication between the groove and an annular area isolated between rotary seals, and positioning an elastomeric ring in the groove, the elastomeric ring preventing fluid flow from an exterior of the groove to the annular area, and permitting fluid flow from the annular area to the exterior of the groove. Another rotating control device can include an elastomeric ring in a groove, and a passage in a housing that provides fluid communication between the groove and an annular area between rotary seals.

A rotating control device can include a groove formed on a housing, and an elastomeric ring isolating inner and outer portions of the groove, the elastomeric ring permitting fluid communication between the inner and outer portions of the groove in response to a pressure differential from the inner to the outer portion of the groove. A method can include forming a circumferentially extending groove, providing fluid communication between the groove and an annular area isolated between rotary seals, and positioning an elastomeric ring in the groove, the elastomeric ring preventing fluid flow from an exterior of the groove to the annular area, and permitting fluid flow from the annular area to the exterior of the groove. Another rotating control device can include an elastomeric ring in a groove, and a passage in a housing that provides fluid communication between the groove and an annular area between rotary seals.

A rotating control device can include a groove formed on a housing, and an elastomeric ring isolating inner and outer portions of the groove, the elastomeric ring permitting fluid communication between the inner and outer portions of the groove in response to a pressure differential from the inner to the outer portion of the groove. A method can include forming a circumferentially extending groove, providing fluid communication between the groove and an annular area isolated between rotary seals, and positioning an elastomeric ring in the groove, the elastomeric ring preventing fluid flow from an exterior of the groove to the annular area, and permitting fluid flow from the annular area to the exterior of the groove. Another rotating control device can include an elastomeric ring in a groove, and a passage in a housing that provides fluid communication between the groove and an annular area between rotary seals.