Abstract: A wellhead (10) with a casing head (20) has tubing (15) in its therethrough. A mating component, such as a pack-off (40), installs in the wellhead on the end of the tubing above a casing hanger (30). The bore (42) of the pack-off defines circumferential grooves—each having a canted spring (100A, 100B) disposed therein. The canted springs engaged between the groove and the tubing and restricting relative rotation between the pack-off and the tubing.

Abstract: A running tool runs a hanger and tubing string into a wellbore. A tool body threads onto the hanger. Lugs are held on the body with catches. During the threading, triggers engage with the hanger and release the catches, and springs bias the lugs to an extended condition. Being extended, the lugs can engage in slots in the hanger, such as flutes in the hanger's flange. The engagement of the lugs with the slots prevents further threading of the tool on the hanger while the threads keep the tool connected to the hanger. The tubing string can be rotated and moved axially during cementing to distribute the cement evenly. Once done, the lugs can ratchet out of the slots as the tool is unthreaded from the hanger.

Abstract: A running tool runs a hanger and tubing string into a wellbore. A tool body threads onto the hanger. Lugs are held on the body with catches. During the threading, triggers engage with the hanger and release the catches, and springs bias the lugs to an extended condition. Being extended, the lugs can engage in slots in the hanger, such as flutes in the hanger's flange. The engagement of the lugs with the slots prevents further threading of the tool on the hanger while the threads keep the tool connected to the hanger. The tubing string can be rotated and moved axially during cementing to distribute the cement evenly. Once done, the lugs can ratchet out of the slots as the tool is unthreaded from the hanger.

Abstract: An object launching apparatus for a well has a housing, a flow mandrel, and a cage. The flow mandrel is disposed in the housing's internal chamber, and a flow passage in the mandrel communicates flow from the housing's inlet to the mandrel's flow port, which in turn communicates with the housing's outlet. The cage is disposed in the internal chamber and defines pockets for holding the objects. A motor and shaft move the cage in the housing relative to the mandrel's flow port so the cage's pockets can be selectively positioned in communication between the mandrel's flow port and the housing's outlet. This allows any of the object(s) held in the positioned pocket to be launched into the flow to the well. Preferably, the motor rotates the shaft so the cage can ride linearly along the shaft's thread and the cage can rotate through a cammed engagement with the housing.