E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/59
E21B 43/10 (2006.01)
Patent
CA 1059898
TITLE: HYDRAULICALLY SET LINER HANGER AND RUNNING TOOL WITH BACKUP MECHANICAL SETTING MEANS ABSTRACT OF THE INVENTION An apparatus and method are provided for running, setting and anchoring a liner in a well bore casing, said apparatus being connectable to a tubular member extendible to the top of the well. The apparatus comprises an inner longitudinally extending body with an outer longitudinally extending body being around the inner body. Connection means on one of said inner and outer bodies are provided for connection of a liner extending below the apparatus. Expander means are carried on one of the inner and outer bodies, with gripping means being carried on the other of the inner and outer bodies. The gripping means are engagable with the expander means such that the gripping means are shifted into gripping engagement with the casing. A manipulatable tubular running tool is releasably secured to the inner and outer bodies. Drag means are mounted on the running tool and are slidable longitudinally along the casing, the drag means resisting longitudinal travel of the apparatus while in the well bore with sufficient frictional force to support the weight of one of the inner and outer bodies therebelow during mechanical setting of the apparatus. Disengaging means are provided for selective disengagement of the running tool from the inner and outer bodies. Setting means are carried on the running tool and are operably associated with the drag means during mechanical setting, the setting means being responsive to longitudinally shift one of the inner and outer bodies with respect to the other of the inner and outer bodies to anchor the liner to the casing. A piston ele- ment is carried on the running tool and is responsive to fluid pressure entrappable in a piston pressure chamber to hydraulically set the liner. Wiper means selectively disengagable from the running tool are provided together with means for disengagement of the wiper means from the running tool. Side seal means are carried on the running tool to detect disengagement of the running tool from the inner and outer bodies. -2-
294630
Kenneday John W.
Kinney Charles W.
Schmuck Phillip W.
Scott Floyd L. (jr.)
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