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. 19, 1997
Filed:
Jul. 31, 1995
Applicant:
Inventors:
Jean-Louis Beauquin, Saint Faust, FR;
Pierre Lemetayer, Pau, FR;
Assignee:
Elf Aquitaine Production, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 68 ; 166 975 ; 166106 ;
Abstract
A facility for an oil well, extending from the surface (12) towards an oil-bearing rock stratum (14), includes a first casing (20) placed in the well and forming a flow way towards the surface for the hydrocarbons originating from the oil-bearing rock stratum (14). According to the invention the well receives a second casing (22) forming a second flow way towards the surface for the hydrocarbons originating from the same rock stratum, the facility additionally including a chamber (51) between the casings (20,22) and the well wall (18), which does not contain any hydrocarbons originating from the rock stratum.