Two-piece drilling flange

Details Two-piece drilling flange Two-piece drilling flange

1995-09-26

1997-03-18

Taylor, Dennis L.

Wells

Above ground apparatus

166 7514, 166 853, 166379, 285 3, E21B 3304

Patent

active

056113986

ABSTRACT:
This invention relates to a two-piece drilling flange which allows for the full engagement of a conventional casing head external thread (8-round thread) reducing thread wear. The two-piece drilling flange incorporates a flange-bushing piece and a drilling-flange piece. The flange-bushing piece is hand tightened on the 8-round thread so that the casing head end face protrudes beyond the bushing. The drilling-flange piece is threaded onto the flange-bushing piece until a highly reliable elastomeric radial seal makes tight contact with the casing head end face. The drilling-flange piece is then further tightened, exerting an upward force on the flange-bushing piece, ensuring the full engagement of the casing head 8-round thread by the flange-bushing piece internal thread. This tight thread fit reduces thread wear by preventing destructive movement between the threads, especially during the highly vibrating drilling process.

REFERENCES:
patent: 1607430 (1926-11-01), Brewster
patent: 2075899 (1937-04-01), Humason
patent: 2220359 (1940-11-01), Tschappat
patent: 2284869 (1942-06-01), Hinderliter
patent: 2927642 (1960-03-01), Meredith et al.
patent: 3435895 (1969-04-01), Lee
patent: 4452472 (1984-06-01), Crase
patent: 4541490 (1985-07-01), Bigbie et al.
patent: 4923006 (1990-05-01), Hartmann et al.
patent: 5145213 (1992-09-01), Marrison et al.
Brochure, Larkin Products, Inc., Drilling and Adapter Flanges, p. 15.
Brochure, Huber-Hercules Wellhead Accessories, p. 15.

Affiliated with

Also associated with

Rating

Two-piece drilling flange does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-piece drilling flange, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-piece drilling flange will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1699579