Abstract: A high-pressure packoff apparatus and method are disclosed. The packoff allows wireline entering a top drive drilling head through a top entry access system to be isolated in such a fashion to minimize the leakage and escape of drillstring fluids to the atmosphere. Optionally, an extension housing containing a flow tube assembly can be employed to accomplish the task. The flow tube assembly effectuates a pressure drop along the wireline conduit run therethrough, thus minimizing the likelihood of fluid escaping.

Abstract: A deflectable in-line swivel that permits axial deflection of a tubular string is presented. The in-line swivel is preferably constructed as a ball and socket design whereby the ball of a swivel mandrel is permitted to articulate within a socket of a retainer sub. The system preferably includes a thrust bearing to allow the tensile loads to be carried across the swivel.

Abstract: Apparatuses and methods to allow tools disposed upon a conduit to enter the bore of a drillstring is presented. The apparatuses and methods include the use of one or more articulated knuckle joints at ends of an entry sub. The articulated knuckle joints are capable of articulating the entry sub among various conduit entry and load carrying positions.

Abstract: This invention relates to an elongated wireline entry device (10) which allows a wireline tool or coiled tubing with a tool attached to be inserted in a well bore without disconnection form the drill string appended thereto without introducing bending moments into the threaded connections (101, 106, 202) attached to the drill string because the pin and box connections of the tool are in axial, longitudinal alignment, the absence of these bending moments is required to suspend long pendular, and therefore heavy, drill strings for this device without failure. The angle between the longitudinal ayes of the longitudinal passage and the wireline passage in the wireline entry device is at most 4.0°.

Abstract: A bracket and tension rod device is mounted to a top-drive dolly to carry the weight of a sheave wheel assembly. The device is deployed by connecting the sheave wheel assembly to a rigid dolly arm with an adjustable tension rod to relieve a gooseneck from adverse tensile, compressive and bending forces from the movement of a wireline through the sheave assembly.

Abstract: A bracket and tension rod device to mount to atop-drive dolly to carry the weight of a sheave wheel assembly is disclosed. The invention is deployed by connecting the sheave wheel assembly to a rigid dolly arm with an adjustable tension rod to relieve a gooseneck from adverse tensile, compressive and bending forces from the movement of a wireline through the sheave assembly.

Abstract: This invention relates to an elongated wireline entry device (10) which allows a wirelein tool or coiled tubing with a tool attached to be inserted in a well bore without disconneciton form the drill string appended thereto without introducing bending moments into the threaded connectiosn (101, 106, 202) attached to the drill string because the pin and box connectiosn of the tool are in axial, longitudinal alignment. The absence of these bending moments is required to suspend long pendular, and therefore heavy, drill strings forr htthis device without failure. The angle between the longitudinal ayes of the longitudinal passage and the wireline passage in the wireline entry device is at most 4.0°.