Device and method for the temporary protection of a working tool

Details Device and method for the temporary protection of a working tool Device and method for the temporary protection of a working tool

1986-06-19

1987-12-29

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166250, E21B 2300

Patent

active

047154462

ABSTRACT:
The present invention provides a device and method for protecting, by means of a casing, a measuring instrument or a specialzied tool fixed to the end of a drill string. Said drill string has substantially at is end and before said tool a first guide member and said casing has a second guide member, said first and second guide member being adapted for cooperating together so as to allow movement of said casing relatively to said tool or instrument.

REFERENCES:
patent: 4349072 (1982-09-01), Escaron et al.
patent: 4457370 (1984-07-01), Wittrisch

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