Patent ID: 7147254
Filing Date: 2006-12-12
Classification: E21B,F16L

Abstract:
1. An apparatus for coupling a downhole tubular to a pump and transmitting drilling torque to the downhole tubular, the apparatus comprising: a body portion having a bore and a second bore, the second born being narrower than the bore for receiving the downhole tubular, wherein a resilient seal member is mounted in the second bore and seals against a pump tubular when the pump tubular is received in the second bore; a locking assembly for locking the downhole tubular in the bore of the body portion, the looking assembly including at least one locking member movably mounted to the body portion so as to permit the locking member to be moved between an open position in which the downhole tubular can be inserted into the bore of the body portion, and a closed position in which the locking member engages the downhole tubular so as to lock the downhole tubular in the bore of the body portion; a gripping assembly for gripping an external surface of the downhole tubular; and a drive member for transmitting drilling torque from the body portion to the gripping assembly.