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:
Jan. 18, 2000
Filed:
Oct. 02, 1997
Applicant:
Inventors:
Donald V Umphries, New Iberia, LA (US);
Harold D Owen, Fort Worth, TX (US);
Bobby R Ford, Fort Worth, TX (US);
David S Wesson, Desoto, TX (US);
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42B / ; E21B / ;
U.S. Cl.
CPC ...
102312 ; 102313 ; 175-46 ; 89-115 ;
Abstract
An improved downhole explosive charge carrier is disclosed. The invention uses a unique staggered charge pattern and a mounting configuration which allows the use of a straight, axially-located detonator in order to achieve a greater number of shots per unit length over conventional carriers. The invention also reduces the interference caused by the detonator and the closeness of the shots and thereby increases the performance of the individual charges, allowing smaller charges to be used to achieve the same perforation size.