Pipe wiping method and apparatus

Details Pipe wiping method and apparatus Pipe wiping method and apparatus

1982-10-27

1983-08-23

Novosad, Stephen J.

Wells

Processes

Cleaning or unloading well

175 84, E21B 3308

Patent

active

043998690

ABSTRACT:
The present invention relates to improved methods and apparatus for removing drilling mud and other substances from the outside surfaces of drill pipe as the drill pipe is removed from a wellbore. The apparatus is comprised of a housing adapted to be attached over a wellbore and positioned whereby the drill pipe passes through the housing, an inflatable pipe wiping member formed of resilient material having a central passage formed therein for providing wiping contact with the outside surfaces of the drill pipe attached within and to the housing and means for selectively flowing a gas under pressure into or out of the pipe wiping member whereby the member can be selectively expanded or contracted to increase or decrease the force of wiping contact with the drill pipe. Improved methods of removing drilling mud and other substances from the outside surfaces of drill pipe as the drill pipe is pulled out of a wellbore are also provided.

REFERENCES:
patent: 1861726 (1932-06-01), Trout
patent: 1902906 (1933-03-01), Seamark
patent: 2401960 (1946-06-01), Pranger
patent: 2746709 (1956-05-01), Minor
patent: 2843349 (1958-07-01), Meyer

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