Telescoping joint

Details Telescoping joint Telescoping joint

1978-08-09

1980-04-08

Pate, III, William F.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175 45, 175321, E21B 704

Patent

active

041967810

ABSTRACT:
An axially extensible telescoping joint is employed in a directional drilling string to reduce the number of times for a given footage of well drilled that the wireline from the downhole survey or steering tool to the surface readout must be tripped through the string for adding more drill pipe. By drilling the first half of a drilling sequence with the telescoping joint collapsed, and then the second half of the sequence with the telescoping joint extended, twice the conventional footage can be drilled between wireline trips, and two stands of drill pipe can be added rather than the conventional single stand each time the wireline is tripped.

REFERENCES:
patent: 1971922 (1934-08-01), Smith
patent: 2007666 (1935-09-01), Smith
patent: 3255612 (1966-06-01), Mayer et al.
patent: 3722605 (1973-03-01), Isham

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