Inside pipe wiper

Details Inside pipe wiper Inside pipe wiper

1975-08-12

1977-07-12

Leppink, James A.

Wells

Brushing, scraping, cutting or punching-type cleaners

1510405, E21B 3702

Patent

active

040348075

ABSTRACT:
A tool for automatically scraping off mud and oil from the inside wall of pipe being lifted during an oil well drilling operation; the tool including an elongated float that fits loosely inside the pipe and which is of a weight so that it floats on the surface of the oil and mud; the upper end of the tool which is above the water and oil level having arcuate wiper blades extending all around that wipe off the inside wall; the tool being dropped down into the pipe when the pipe is intended to be raised.

REFERENCES:
patent: 3073391 (1963-01-01), Hebert
patent: 3171487 (1965-03-01), Ault
patent: 3251306 (1966-05-01), Plunk
patent: 3276520 (1966-10-01), Arnold
patent: 3424066 (1969-01-01), Moore, Jr.

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