Well tool protector
OwnerDonald E. Sableinventor
Life of this patent
Estimating the term…
Abstract
A protector for well tools such as drill pipe tubing, and the like, which is positionable about a joint of a drill pipe or tubing and which is moved into pre-determined position on the box-half of a tool joint by the pin-half of the tool joint as it is moved into telescoped and threaded engagement with the box-half.
Claims14
A protector for a well tool joint formed of a pin-half on one section of an elongate well tool having an annular external shoulder and a reduced threaded end portion and a box-half on another elongate section of the well tool having a threaded bore for receiving the reduced threaded end portion and an external annular shoulder facing the external shoulder of the pin-half when said halves are connected, said protector including:
- a rigid single piece cylindrical member having an internal annular flange at one end;
- and internal resilient compression means in said cylindrical member extending longitudinally relative to said cylindrical member at least half the length thereof and compressible against said cylindrical member when said protector is positioned on one of said joint halves, said flange being positioned between and engageable with said external shoulders of said joint halves and rotatable relative to said joint halves when said protector is positioned on said one of said joint halves for limiting longitudinal movement of said protector relative to said joint halves and permitting rotation of said protector relative thereto.
Dependencies are inferred from the claim text.