E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/49
E21B 43/12 (2006.01) E21B 23/01 (2006.01) E21B 33/14 (2006.01) E21B 43/10 (2006.01)
Patent
CA 1217716
ROTATABLE LINER ARRANGEMENT WITH TANDEM CONE LINER HANGER Abstract of the Disclosure A running string is releasably connected to a liner and liner hanger setting arrangement for lowering into a well bore casing and securing the liner to a casing. The liner hanger setting arrangement includes a first sleeve with upper and lower annular rows of conically shaped segments circum- ferentially spaced thereon. Upper and lower spaced rows of hanger slips are connected to a second sleeve by elongated strips and the second sleeve is releasably secured to the first sleeve whereby the second sleeve may be released from the sleeve for relative longitudinal movement therebetween to move the hanger slips onto the segments and secure the liner to the casing. The space between the segments in each row is substantial to accommodate relatively unrestricted fluid flow thereabout as the apparatus is manipulated and operations conducted in the well bore. After the running string is dis- connected from the liner and liner hanger, it is lowered to releasably connect splines on the running string and upper end of the liner. The liner has a rotatable bearing above said sleeves and liner hanger and rotation of the running string is thus transmitted to the liner as it is cemented in the well bore.
471413
Riches Mckenzie & Herbert Llp
Texas Iron Works Inc.
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