Back to results
US 4,067,386 AGranted
Casing collar indicator
AssigneeDresser Industries, Inc.
InventorStanley Allan Weise
Life of this patent
Estimating the term…
Abstract
A tubing string device for giving an indication of the location of casing collars in a cased wellbore utilizes a tubular body having a resilient sleeve mounted thereon, and axial spring means abutting the resilient sleeve.
Claims9
A casing collar engaging tool comprising:
- tubular cylindrical housing means having connecting means at each end for interconnection in a conduit string;
- sleeve means encircling said housing means and having a plurality of resilient, outwardly biased integral arms;
- shoulder means on said longitudinal arms projecting radially outward and adpated to snugly engage in a casing collar;
- and,
- means for holding said sleeve means longitudinally on said housing means.
2 more elements
Apparatus for resiliently engaging annular openings in the inner wall of a string of tubular conduit, said apparatus comprising:
- a tubular body having an axial bore passage therethrough and means for connecting said body into a tool string;
- upper and lower outwardly extending annular shoulders on said tubular body forming a spaced annular opening therebetween;
- and,
- a resilient shouldered metallic sleeve secured in said annular opening between said shoulders and further comprising:
- a generally circular outwardly curved sleeve member;
- a plurality of longitudinal axial slots formed through the wall of said sleeve member and arranged to form a plurality of longitudinal, outwardly curved, resilient arms;
- and,
- shoulder means formed on said arms adapted to snugly engage a casing collar, and projecting radially outward therefrom.
5 more elements
Dependencies are inferred from the claim text.