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.
Patent No.:
Date of Patent:
Nov. 20, 2007
Filed:
Jan. 28, 2005
Applicant:
Robin J. Verret, Youngsville, LA (US);
Inventor:
Robin J. Verret, Youngsville, LA (US);
Assignee:
Turbo-Chem International, Inc., Scott, LA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/36 (2006.01); E21B 43/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and drilling fluid additive composition are provided for reducing lost circulation and seepage loss when synthetic or oil based drilling fluid is used. The method includes injecting drilling fluid and 1 to 50 pounds per barrel of a loss control additive having a composition comprising 20 to 80 parts by weight fibrous particles, 10 to 40 parts by weight lignite, and 10 to 40 parts by weight phenol-formaldehyde resin.