Abstract: The described pack-off assembly includes a tubular sleeve that is configured to selectively encompass a pack-off wireline seal and that is positionable through selective application of pressurized fluid to one or more actuation chambers that interact with a piston portion of the sleeve. Pressure may be applied to position the sleeve to encompass the seal to engage a wireline and enable pressure-control wireline operations. A different pressure may be applied to position the sleeve to expose the seal for servicing.

Abstract: A coil-tubing ram blowout preventer is disclosed that includes a ram block and ram-block cavity each having a D-shaped cross section. The flat portion of the ram block's “D” corresponds to the flat portion of the cavity's “D” to prevent rotation of the ram block within the ram-block cavity. The ram block may be configured with selectively replaceable seals, slips, or shear blades to allow easy configuration of the ram block for various sizes of tubing. The shear blades may include a sealing component on one surface of the blade such that paired shear-ram-blocks may create two distinct sealing points when each sealing component engages the other blade when the shear rams are closed.

Abstract: A wellhead connection is disclosed that includes a means for selectively clamping a nightcap or crossover to a flange assembly through selective application of hydraulic pressure to a hydraulic motor and a means for selectively positioning a nightcap through selective application of hydraulic pressure to a plurality of hydraulic cylinders.

Abstract: A wellhead connection is disclosed that includes a means for selectively clamping a nightcap or crossover to a flange assembly through selective application of hydraulic pressure to a hydraulic motor and a means for selectively positioning a nightcap through selective application of hydraulic pressure to a plurality of hydraulic cylinders.

Abstract: A wellhead connection is disclosed that includes a means for selectively clamping a nightcap or crossover to a flange assembly through selective application of hydraulic pressure to a hydraulic motor and a means for selectively positioning a nightcap through selective application of hydraulic pressure to a plurality of hydraulic cylinders.

Abstract: A wellhead connection is disclosed that includes a means for selectively clamping a nightcap or crossover to a flange assembly through selective application of hydraulic pressure to a hydraulic motor and a means for selectively positioning a nightcap through selective application of hydraulic pressure to a plurality of hydraulic cylinders.