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. 05, 1988
Filed:
Apr. 08, 1986
Applicant:
Inventors:
Gerardus M Bol, Rijswijk, NL;
Franciscus H Meijs, Rijswijk, NL;
Fredericus C Schouten, Rijswijk, NL;
Robert B Stewart, Rijswijk, NL;
Petrus C De Roo, Rijswijk, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166292 ; 166242 ;
Abstract
In order to prevent gas migration along the outer surface of a casing which is cemented in a well, the casing is provided with casing-surrounding sheaths of an elastomeric foam, which sheaths are able to seal-off the spacing that may be formed between the casing and the cement.
Quick Actions:
Bol, Gerardus. (1988). Installing casing with improved casing/cement bonding (U.S. Patent No. 4716965). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4716965
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile