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:
Feb. 26, 2002
Filed:
May. 05, 1999
Applicant:
Inventors:
Terry R. Bussear, Friendswood, TX (US);
Sebastiaan J. Wolters, Sultanate of Oman, NL;
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/300 ; E21B 4/322 ; E21B 4/700 ;
U.S. Cl.
CPC ...
E21B 4/300 ; E21B 4/322 ; E21B 4/700 ;
Abstract
Downhole tools and systems can be actuated chemically by placing a chemical sensor downhole and introducing a chemical slug into fluids being pumped downhole. When the slug reaches the sensor a reaction in the sensor may be employed to trigger an event (e.g., actuation) or may cause a count to increase by one on its way to a full count and actuation of a tool or system downhole.