Centering spinning for down hole tubulars

Details Centering spinning for down hole tubulars Centering spinning for down hole tubulars

1990-05-24

1991-10-08

Neuder, William P.

Wells

Above ground apparatus

With tube rotating means

81 5719, B25B 1700

Patent

active

050545507

ABSTRACT:
A centering spinner for centering and spinning down hole tubulars having a range of diameters. The centering spinner includes a frame capable of admitting a down hole tubular therein and a plurality of roller assemblies pivotally coupled to the frame to converge upon and center the down hole tubular. According to a further feature, adjacent rollers of the roller assemblies of the centering spinner are axially displaced with respect to a down hole tubular retained therein.

REFERENCES:
patent: 3906820 (1975-09-01), Hauk
patent: 4099429 (1978-07-01), Hauk
patent: 4366606 (1983-01-01), Willis et al.
patent: 4403666 (1983-09-01), Willis
patent: 4446761 (1984-05-01), Boyadjieff et al.
patent: 4821814 (1989-04-01), Willis et al.

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