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:
Feb. 05, 2002
Filed:
Mar. 06, 2000
Applicant:
Inventors:
Pierre-Yves Corre, Montfort-sur-Meu, FR;
James Leighton, L'Hermitage, FR;
Jean-Louis Saltel, Le Rheu, FR;
Assignee:
Drillflex, Noyal-Chatillon, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21B 4/324 ;
U.S. Cl.
CPC ...
F21B 4/324 ;
Abstract
A method and apparatus for unplugging a well or pipe obstructed by a gas hydrates. According to the invention, a moving heating element is applied against one end of the hydrate plug, and is displaced axially in the tube or the pipe towards the other end, so as to cause the plug to melt progressively from one end to the other. Application to the oil industry, in particular in off-shore wells.