The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 05, 2006

Filed:

Dec. 18, 2003
Applicants:

Jiten Chatterji, Duncan, OK (US);

Dennis W. Gray, Comanche, OK (US);

Bobby J. King, Duncan, OK (US);

John L. Dennis, Jr., Marlow, OK (US);

Inventors:

Jiten Chatterji, Duncan, OK (US);

Dennis W. Gray, Comanche, OK (US);

Bobby J. King, Duncan, OK (US);

John L. Dennis, Jr., Marlow, OK (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 37/00 (2006.01); E21B 37/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

Well completion spacer fluids containing fibers and methods of using the spacer fluids are provided. A method of the invention for displacing a first fluid from a well bore with an incompatible second fluid comprises the following steps. A spacer fluid is placed between the first and second fluids to separate the first and second fluids and to remove the first fluid from the walls of the well bore. Thereafter, the first fluid and the spacer fluid are displaced from the well bore with the second fluid. The spacer fluid comprises water, a weighting material, a dispersing agent, a suspending agent and friction reducer and fibers. The spacer fluid containing the components mentioned above is preferably also foamed.


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