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:
Mar. 25, 1997
Filed:
Dec. 22, 1994
Robert M Sorem, Lawrence, KS (US);
David M Eslinger, Tulsa, OK (US);
Dowell, a division of Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A slat-type inflatable packer includes a plurality of longitudinal metal slats on the exterior thereof which are partially overlapping to allow expansion of the packer element while providing a barrier against extrusion. In one embodiment each slat has narrow end portions and a wide central portion to provide greatly increased lateral stiffness as well as improved extrusion barrier and slat deployment characteristics, particularly in high expansion ratio packers, and in another embodiment such characteristics are further improved by upper and lower intermediate sections which are wider than such central portion.