Downhole activated process and apparatus for providing cathodic

Details Downhole activated process and apparatus for providing cathodic Downhole activated process and apparatus for providing cathodic

1991-09-16

1992-11-24

Neuder, William P.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

1662411, 166902, E21B 4102

Patent

active

051654784

ABSTRACT:
This invention relates to a downhole activated device for providing cathodic protection for pipes in a wellbore for the production of hydrocarbons. The downhole activated devices are carried within either the pipe casing or the collars or both and remain generally within the maximum outward profile of the pipe string so as not to interfere with the movement and placement of the pipe string in the wellbore. The pipe string may be rotated, reciprocated and circulated which enhances the ability of the installer to place the pipe string in a deviated or long reach wellbore. Once the pipe string is in place, the devices may be deployed by one of several methods such that pistons mounted in openings in the peripheral wall of the pipe string move outwardly to contact the wall of the wellbore. Such contact with the walls of the wellbore insures that the sacrificial material in the pistons will corrode in preference to the remainder of the pipe.

REFERENCES:
patent: 1432649 (1922-10-01), Wessels
patent: 2178845 (1939-11-01), Baker
patent: 2654435 (1953-10-01), Oliver
patent: 2743781 (1956-05-01), Lane
patent: 2855049 (1958-10-01), Zandmer
patent: 2874783 (1959-02-01), Haines
patent: 2913051 (1959-11-01), Lister
patent: 3120268 (1964-02-01), Caldwell
patent: 3131769 (1964-05-01), De Rochemont
patent: 3358770 (1967-12-01), Zandmer
patent: 3448805 (1969-06-01), Brown
patent: 3603391 (1971-09-01), Yann
patent: 4157732 (1979-06-01), Fonner
patent: 4286662 (1981-09-01), Page, Jr.
patent: 4498543 (1985-02-01), Pye et al.
patent: 4794990 (1989-01-01), Riggs
patent: 4928760 (1990-05-01), Freitas

Affiliated with

Also associated with

Rating

Downhole activated process and apparatus for providing cathodic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downhole activated process and apparatus for providing cathodic , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole activated process and apparatus for providing cathodic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-917222