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:
Apr. 10, 1990
Filed:
May. 12, 1989
Applicant:
Inventor:
Pierre Goldschild, Vulaines sur Seine, FR;
Assignee:
Schlumberger Technology Corporation, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166385 ; 166 70 ; 166 77 ;
Abstract
The method comprises inserting each of the sections of a tool in turn into a well under pressure via a pressure lock and using a first cable of small diameter in order to overcome the pressure in the well head, and then replacing the first cable by a second cable of larger diameter once the weight of the sections which have been inserted into the well exceeds a predetermined value which is a function of the diameter of said second cable.
Goldschild, Pierre. (1990). Method of inserting a tool into a well under pressure (U.S. Patent No. 4915178). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4915178
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile