Abstract: A method of operating a gas extraction system includes receiving a drilling fluid sample at a flow meter via a flow meter inlet conduit and discharging the drilling fluid sample into a flow meter outlet conduit. A first inline mud valve positioned in the flow meter inlet conduit and a second inline mud valve positioned in the flow meter outlet conduit are each closed to transition the gas extraction system to a bypass flushing configuration. A bypass flow meter valve positioned in a flow meter bypass conduit is opened to divert the drilling fluid sample around the flow meter. The flow meter is then flushed with flushing fluid by opening first and second flow meter flushing valves and starting a pump to circulate the flushing fluid through the flow meter.

Abstract: A method of operating a gas extraction system includes receiving a drilling fluid sample at a flow meter via a flow meter inlet conduit and discharging the drilling fluid sample into a flow meter outlet conduit. A first inline mud valve positioned in the flow meter inlet conduit and a second inline mud valve positioned in the flow meter outlet conduit are each closed to transition the gas extraction system to a bypass flushing configuration. A bypass flow meter valve positioned in a flow meter bypass conduit is opened to divert the drilling fluid sample around the flow meter. The flow meter is then flushed with flushing fluid by opening first and second flow meter flushing valves and starting a pump to circulate the flushing fluid through the flow meter.

Abstract: A method of operating a gas extraction system includes receiving a drilling fluid sample at a flow meter via a flow meter inlet conduit and discharging the drilling fluid sample into a flow meter outlet conduit. A first inline mud valve positioned in the flow meter inlet conduit and a second inline mud valve positioned in the flow meter outlet conduit are each closed to transition the gas extraction system to a bypass flushing configuration. A bypass flow meter valve positioned in a flow meter bypass conduit is opened to divert the drilling fluid sample around the flow meter. The flow meter is then flushed with flushing fluid by opening first and second flow meter flushing valves and starting a pump to circulate the flushing fluid through the flow meter.

Abstract: A seal assembly, method for sealing a seal assembly and a modular seal unit for a rotating control device for use in an offshore environment. The modular seal unit includes a first outer housing, a first seal housing lockable within the first outer housing, and a first sealing element disposed on a lower end of the first seal housing. The first sealing element includes a throughbore configured to receive a drill pipe, and a sealing surface configured to seal against the drill pipe. The modular seal unit also includes a first connector configured to couple the first seal housing to the first outer housing, and a second connector configured to couple the first seal housing to one selected from a second outer housing of a second modular seal unit or a running tool adapter.

Abstract: A pressurizing device includes a main housing having a central bore therethrough and a ball drop module removably disposed within the main housing, the ball drop module including a ball seat hingedly attached within the ball drop module and configured to receive a dropped ball, wherein the ball seat is configured to rotate about a hinge from a closed position to an open position when a pressure above the ball seat exceeds a preset limit.

Abstract: A seal assembly, method for sealing a seal assembly and a modular seal unit for a rotating control device for use in an offshore environment. The modular seal unit includes a first outer housing, a first seal housing lockable within the first outer housing, and a first sealing element disposed on a lower end of the first seal housing. The first sealing element includes a throughbore configured to receive a drill pipe, and a sealing surface configured to seal against the drill pipe. The modular seal unit also includes a first connector configured to couple the first seal housing to the first outer housing, and a second connector configured to couple the first seal housing to one selected from a second outer housing of a second modular seal unit or a running tool adapter.

Abstract: A downhole valve assembly is attached to a drillstring and includes an upper drillstring connection, a lower drillstring connection, and a tubular body comprising a through bore, and further includes a weight activated mechanism configured to close the through bore when the drillstring is lifted.

Abstract: Apparatus and methods for providing fluid and projectiles to downhole tubulars includes a manifold. The manifold may include a housing, a cartridge disposed within the housing, and an actuator. The cartridge includes multiple throughbores for selectively allowing a fluid flow to pass through, and storing a projectile. The actuator is adapted to move the multiple throughbores of the cartridge out of and into the fluid flow to release the stored projectile into the fluid flow. The manifold may include multiple projectiles that are stored laterally relative to each other for radial translation and release into the fluid flow.

Abstract: A pressurizing device includes a main housing having a central bore therethrough and a ball drop module removably disposed within the main housing, the ball drop module including a ball seat hingedly attached within the ball drop module and configured to receive a dropped ball, wherein the ball seat is configured to rotate about a hinge from a closed position to an open position when a pressure above the ball seat exceeds a preset limit.

Abstract: A downhole valve assembly is attached to a drillstring and includes an upper drillstring connection, a lower drillstring connection, and a tubular body comprising a through bore, and further includes a weight activated mechanism configured to close the through bore when the drillstring is lifted.

Abstract: Apparatus and methods for cementing tubulars in a borehole are disclosed In some embodiments, the apparatus includes a housing, a cartridge disposed within the housing, and an actuator. The housing includes a fluid entry port and a fluid exit port The cartridge includes a first chamber and is moveable between a first and a second position In the first position, the first chamber is out of fluid communication with the entry port and the exit port. In the second position, the first chamber is in fluid communication with the entry port and the exit port. The actuator is adapted to move the cartridge between the first and second positions.