Abstract: A drilling system includes a hull, an open cantilever mounted on the hull, a blowout preventer stack supported by the open cantilever, a plurality of beams installed horizontally and supported on the open cantilever, and a conductor tension unit cage including a conductor tension unit. The conductor tension unit cage is installed below the blowout preventer stack, and is supported by the plurality of beams. The conductor tension unit is configured to apply tension to a conductor pipe extending through the blowout preventer stack when the open cantilever is skidded out from the hull.

Abstract: A hydraulic workover unit includes a work platform and a jacking table assembly disposed adjacent to the work platform. The jacking table assembly includes a jacking table and multiple adjustable legs, and each adjustable leg of the multiple adjustable legs includes multiple telescopic cylinders that provide variable jacking capacity to adjust a position of the jacking table relative to the work platform.

Abstract: A wireline riser tensioner system includes a set of tensioning units arranged about a first well with at least one tensioning cable connected to a first and a second tension ring of the first and second wells, respectively. Both wells can be serviced using the same set of tensioning units. The at least one tensioning cable is routed through a plurality of sheaves. If not being serviced, the first or the second well might serve as an anchor.

Abstract: Various hoisting systems with heave compensation are provided. In one embodiment, an apparatus includes a hoisting system having a crown block and a drawworks. The drawworks includes a rotatable drum for reeling in and reeling out a hoisting line that is wound on the rotatable drum and reeved over the crown block. The hoisting system includes active heave control at the drawworks and a passive heave compensation system. Additional systems, devices, and methods are also disclosed.

Abstract: Various hoisting systems with heave compensation are provided. In one embodiment, an apparatus includes a hoisting system having a crown block and a drawworks. The drawworks includes a rotatable drum for reeling in and reeling out a hoisting line that is wound on the rotatable drum and reeved over the crown block. The hoisting system includes active heave control at the drawworks and a passive heave compensation system. Additional systems, devices, and methods are also disclosed.

Abstract: An incubator or drying oven is provided having a housing bounding a useful space. The useful space communicates with the exterior through a front opening. An inner door is hingedly mounted to the housing and is configured to selectively cover the front opening. An outer door is also hingedly mounted to the housing and is configured to selectively cover the inner door. Mounted on the housing adjacent to the front opening is a locking element. The locking element has a slot formed on the side thereof. A latching assembly is mounted to the inner door. The latching assembly includes a hub rotatably mounted to the inner door about a first axis, a tongue projecting from the hub and configured to be received within the slot of the locking element, and a handle attached to the hub opposite the tongue. The handle is rotatably connected to the hub about a second axis that is substantailly perpendicular to the first axis. A spring continually biases the handle away from the inner door.

Abstract: The invention relates to an apparatus for automatically feeding each of a sequence of crucibles (3), which are arranged on a conveyor, to a test oven (12) for vaporization and content analysis of a sample contained in each crucible. For cradling each crucible, a gripper head (13) is provided. In order to provide an apparatus in which the number of mechanically moving parts is minimized, the gripper head is rigidly mounted on the end of an operating piston (7). The gripper head preferably comprises two spaced, co-linear crosspieces (16) which face each other and engage under an outwardly extending circumferential flange (17) on the top of each crucible (3). The operating piston (7) and a lifting piston (6) are oriented vertically and connected together at their tops by a transverse crossbar (10). Lifting piston (6) is rotated about its axis (8) by a drive motor, thereby revolving operating piston (7) along a circle (11).