Theodore Achilles Kritikos
Engineers at Sutton Pl, New Orleans, LA
License number
Colorado 18742
Issued Date
Oct 21, 1981
Renew Date
Oct 31, 1995
Expiration Date
Oct 31, 1995
Type
Professional Engineer
Address
Address
5449 Sutton Pl, New Orleans, LA 70114
Professional information
High Pressure Automatic Mud Saver Valve
US Patent:
5253704, Oct 19, 1993
Filed:
Nov 13, 1990
Appl. No.:
7/611797
Inventors:
Reginald J. Barrus - Jefferson LA
Donald J. Barrus - Los Alamintos CA
Theodore A. Kritikos - New Orleans LA
John W. Owensby - New Orleans LA
Donald J. Barrus - Los Alamintos CA
Theodore A. Kritikos - New Orleans LA
John W. Owensby - New Orleans LA
Assignee:
KOB, Inc. - Gretna LA
International Classification:
E21B 3402
US Classification:
166 53
Abstract:
The disclosure relates to an improved diaphragm type mud saver valve, commonly referred to as a Kelley valve, which closes automatically to prevent loss and spilling of drilling mud. The improved valve can withstand very high drilling and pump pulsation pressures, for example, the pressures required for drilling wells over 20,000 feet in depth and mud pressures can exceed 15,000 p. s. i. The disclosure prevents the formation of gas pockets by providing gas escape openings and a clearance space between the support and backup element to prevent the extrusion of the diaphragm material through the small openings in a backup sleeve thus extending the life of the diaphragm and allowing proper diaphragm seating.
High Pressure Automatic Kelly Valve
US Patent:
4969513, Nov 13, 1990
Filed:
Sep 22, 1989
Appl. No.:
7/410889
Inventors:
Reginald J. Barrus - Jefferson LA
Donald J. Barrus - Los Alamintos CA
Theodore A. Kritikos - New Orleans LA
John W. Owensby - New Orleans LA
Donald J. Barrus - Los Alamintos CA
Theodore A. Kritikos - New Orleans LA
John W. Owensby - New Orleans LA
Assignee:
KOB, Inc. - Gretna LA
International Classification:
E21B 3402
US Classification:
166 53
Abstract:
A mud saver valve for automatically closing to prevent loss and spilling of drilling mud. The valve contains a diaphragm, rigid backup means and diaphragm support means so that the valve can be used in high pressure wells.