Gary E Folmnsbee

53460111, Sep 13, 1994

Apr 1, 1993

8/041083

David D. Onan - Lawton OK
Vincent J. Bila - Duncan OK
James L. Haney - Duncan OK
Gary E. Folmnsbee - Duncan OK
Ronney R. Koch - Duncan OK
Randall D. Stilley - London, GB
Larry T. Watters - Duncan OK

Halliburton Company - Duncan OK

E21B 3316

166291

Improved methods of displacing a first liquid through a pipe with a second liquid while preventing the first and second liquids from mixing are provided. In accordance with the methods, a plug is formed in-situ in the pipe between the first and second liquids by injecting a self-thickening liquid therein and permitting the liquid to thicken. The formed plug and the first liquid are then displaced through the pipe with the second liquid. The methods are particularly suitable for carrying out subterranean well bore cementing operations wherein cement slurries are displaced through pipes disposed in well bores.

53559517, Oct 18, 1994

Mar 15, 1993

8/031777

Thomas E. Allen - Duncan OK
Gary D. Arnold - Duncan OK
Leonard R. Case - Duncan OK
Mark A. Clark - Duncan OK
Gary E. Folmnsbee - Duncan OK
Jerry L. Gammill - Duncan OK
James M. Macadam - Duncan OK
John M. Richardson - Duncan OK
Freddie L. Sabins - Duncan OK
Larry T. Watters - Duncan OK

Halliburton Company - Duncan OK

E21B 3313
E21B 4400
E21B 4706

166250

A method of evaluating a slurry mixing and placing process, such as a cementing process, for an oil or gas well comprises identifying and measuring specific subprocesses and parameters thereof, statistically summarizing the parameters and creating a database thereof, and analyzing the statistically summarized parameters to identify or compare against process capabilities to reduce variation, thereby improving specific job performance and the overall process.

54839866, Jan 16, 1996

Jun 9, 1994

8/255633

David D. Onan - Lawton OK
Vincent J. Bila - Duncan OK
James L. Haney - Duncan OK
Gary E. Folmnsbee - Duncan OK
Ronney R. Koch - Duncan OK
Randall D. Stilley - London, GB
Larry T. Watters - Duncan OK

Halliburton Company - Duncan OK

F16K 1310
E21B 3316

137 1

Improved methods of displacing a first liquid through a pipe with a second liquid while preventing the first and second liquids from mixing are provided. In accordance with the methods, a plug is formed in-situ in the pipe between the first and second liquids by injecting a self-thickening liquid therein and permitting the liquid to thicken. The formed plug and the first liquid are then displaced through the pipe with the second liquid. The methods are particularly suitable for carrying out subterranean well bore cementing operations wherein cement slurries are displaced through pipes disposed in well bores.