Abstract: A connector for use in establishing a flow path for a control fluid between a pressurized source and a hydraulically controllable device located at a subsea well head. The connector includes a control valve assembly which is reciprocal to establish a seal about a control port on the controllable device prior to coupling the source to the port and to isolate the source from the port prior to breaking the seal pursuant to the separation of the connection from the controllable device.

Abstract: A tieback tool 10 and method for connecting conductors 12 to the well system 14 including a body member 36 having dogs 46 for engagement with J-slots 30 in the well system. Entry of some of the dogs 46 in the J-slots 30 during initial stabbing directs and aligns the remaining dogs into the respective J-slots 30. The body 36 is provided with an externally threaded ring rotatable by a running tool 80 after full engagement of the J-slots 30 by the dogs 46 to lock the dogs 46 in the J-slots 30 to clamp the tieback tool in alignment with the well system 14 and to compress a seal ring 60 between the tieback tool 10 and the well system 14.

Abstract: A tieback tool (10) and method for connecting tieback conductors (12) to a well system (14) where misalignment occurs between the tool and the well system including a body (40) having an externally threaded dog ring (44) which engages the throats of J-slots (34) in the well system and which initially serves to align the tieback tool to the well system. Rotation of the tieback tool after initial alignment actuates the threaded dog ring (44) in the tieback tool to lock and seal the tieback tool into the well system.

Abstract: A tieback tool (10) for connecting tieback conductors (12) to a well system (14) where there is misalignment between the tool and the well system including a body (40) rigidly connected to the tieback conductor (12), a stab connector (12) swivel mounted on said body and free to align with the well system during initial contact between the tieback tool and the well system, and an internal straightening stab (60) which is extended by rotation into the well system to finally align the tieback tool with the well system. In one embodiment, the tieback conductor (12) is not rotated to make up the final connection of the tool and the well system, the straightening stab (60) is extended into the well system by a rotatable torquing tool (66), and the stab connector (16) locks on to the well system by a lock ring (32).

Abstract: A tieback connector 10 for connecting tieback conductors 14 between a platform and a casing hanger 22 in a subsea well system 20 comprising a split ring 44 on a connector body member 12 having external threads 32 capable of mating with internal threads 24 on the casing hanger 22 and capable of ratcheting over said internal threads 24 as the connector is stabbed into the casing hanger 22. Rotation of the connector 10 will actuate a locking means 54-66 (and 54A-66A) by the combined action of the threads and relative axial movement of said split ring and body member 12 to thread and lock said connector in said casing hanger. An anti-rotation key 50 permits axial relative movement of the split ring 44 and body 12 but prevents relative rotational movement therebetween.

Abstract: Improved thin film resistors and electrical devices and circuits with thin film resistors are fabricated utilizing a chromium, silicon, and nitrogen compound formed preferably by rf reactive sputtering of chromium and silicon in a nitrogen bearing atmosphere. An annealing step is used to produce time-stable resistance values and in combination with variations in the partial pressure of nitrogen during sputter deposition to control the temperature coefficient of resistivity to have positive, negative or zero values.

Abstract: Alkyl-substituted thiapolycyclic polyahls such as dimethyl-9-thiabicyclononane diamines form polymers that have improved physical properties.

Abstract: Improved thin film resistors and electrical devices and circuits with thin film resistors are fabricated utilizing a chromium, silicon, and nitrogen compound formed preferably by rf reactive sputtering of chromium and silicon in a nitrogen bearing atmosphere. An annealing step is used to produce time-stable resistance values and in combination with variations in the partial pressure of nitrogen during sputter deposition to control the temperature coefficient of resistivity to have positive, negative or zero values.

Abstract: Reaction injection moldings (RIM) having increased heat resistance are provided by substituting a thiapolycyclic polyisocyanate such as dimethyl-9-thiabicyclononane diisocyanate for the aromatic polyisocyanate in an otherwise conventional RIM composition.

Abstract: Reaction injection moldings (RIM) having increased heat resistance are provided by employing a thiapolycyclic polyahl such as dimethyl-9-thiabicyclononane diamine as a chain extender in an otherwise conventional RIM formulation.

Abstract: Novel monomers of the structure: ##STR1## wherein each R, which may be the same or different, is an alkyl group containing 1 to 3 carbon atoms; each R', which may be the same or different, is hydrogen or methyl, at least two R' are hydrogen; and x and y are independently 0, 1 or 2, are made and used to produce polyurethanes, polyureas and other useful polymers.

Abstract: Improved thin film resistors and electrical devices and circuits with thin film resistors are fabricated utilizing a chromium, silicon, and nitrogen compound formed preferably by rf reactive sputtering of chromium and silicon in a nitrogen bearing atmosphere. An annealing step is used to produce time-stable resistance values and in combination with variations in the partial pressure of nitrogen during sputter deposition to control the temperature coefficient of resistivity to have positive, negative or zero values.