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:
Aug. 10, 2004
Filed:
Feb. 26, 2002
Applicant:
Inventors:
Philip J. Rae, Singapore, SG;
Gino F. Di Lullo Arias, Rio de Janeiro, BR;
Lance N. Portman, Jakarta, ID;
Assignee:
BJ Services Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/04 ; E21B 7/18 ;
U.S. Cl.
CPC ...
E21B 7/04 ; E21B 7/18 ;
Abstract
Methods and materials for chemically enhanced drilling of oil/gas wells are disclosed. The use of drilling fluids containing chemicals that dissolve formation constituents results in the creation of boreholes. Fluids containing acids such as hydrochloric acid, formic acid, acetic acid, or combinations thereof have been found to be especially useful in chemical drilling of formations containing basic minerals such as calcium carbonate. The use of acid has the further advantage of simultaneously stimulating the borehole.