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. 25, 2014
Filed:
Apr. 24, 2006
Jean-françois Evrard, Le Petit Chêne, FR;
Jean-François Evrard, Le Petit Chêne, FR;
Geoservices Equipements, Le Blanc Mesnil, FR;
Abstract
A device () comprises an enclosure () and means () for circulating a drilling mud in the enclosure (). The inventive device is also provided with means () for introducing a gas carrier into the enclosure (), which comprises a pipe () provided with a unit () for adjusting the gas carrier flowrate. The device () comprises a gas extracting pipe () open into the enclosure (). The gas introducing means () comprise a sensor () for measuring a pressure at a point located downstream of the adjusting unit () and means () for controlling the flowrate of the gas carrier injected through said adjusting unit () according to the difference between a pressure measured by the sensor () and a determined gas extraction pressure.