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. 12, 1988
Filed:
Sep. 12, 1984
Applicant:
Inventors:
Assignee:
Institut Francais du Petrole, Rueil-Malmaison & Courbevoie, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04C / ;
U.S. Cl.
CPC ...
417 14 ; 417 18 ; 417 32 ; 417 45 ; 417 53 ; 417410 ; 418 48 ;
Abstract
A control process for a rotary pump which is immersed in a fluid produced by a well involves the use of a rotary pump driven by a variable speed motor and comprises the steps of acting upon the rotational speed of the motor according to a pressure difference which exists between the pressure of the fluid measured in the proximity of the pump and the production pressure of the well. The production pressure P of the well being given by the formula: