Importance

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Abstract

Method and apparatus for supporting a liner on an operating string mandrel so that the liner can be lowered into a well bore and selectively rotated and reciprocated. The liner includes rigid splines which are initially engaged with rigid splines releasably engaged on the operating string mandrel to enable the liner to be selectively rotated and reciprocated before positioning on the well bore casing. The liner is secured or positioned on the well bore casing and the operating string can then be manipulated to release the mandrel from the rigid splines releasably engaged thereon. The mandrel rigid splines and mandrel have cooperating surfaces which reconnect the mandrel rigid splines to the mandrel whereupon the mandrel rigid splines can then be disengaged from the liner rigid splines so that the mandrel can be released from the liner. After the operating string mandrel is released from the liner, the operating string is manipulated to reengage the rigid mandrel and liner splines for rotation of the liner after it has been secured to the casing.

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First Claim