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. 24, 1998
Filed:
May. 14, 1996
Applicant:
Inventor:
Claude Putot, L'Etang la Ville, FR;
Assignee:
Institut Francais du Petrole, Rueil Malmaison, FR;
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
175 50 ; 175 57 ; 7315201 ; 7315243 ;
Abstract
A method for the improvement of performances involves a drilling model wherein the model takes account of the effects of the destruction of a rock (2) by a cutter (1) fastened to a bit body (3) driven in rotation and the effects of the removal of rock cuttings by a fluid, by calculating a material balance from the production of cuttings by the cutter that has penetrated the rock by a depth .delta., a bed of cutting of thickness l, a fluid strip of thickness h between the bed of cuttings and body (3), the fluid strip having a cuttings concentration c.