1
Daniel N Levy, Fabrice Aubertin: Paste extrusion method. E I du Pont de Nemours and Company, January 16, 2001: US06174473 (17 worldwide citation)

The present invention relates to a process of paste extruding lubricated PTFE fine powder in an extrusion device by forcing the lubricated PTFE fine powder through the extrusion device and out of an orifice as a lubricated green extrudate, wherein before exiting through the orifice, the direction of ...


2
Fabrice Aubertin, Daniel N Levy: Continuous paste extrusion method. E I du Pont de Nemours and Company, October 12, 1999: US05965074 (14 worldwide citation)

Paste extrusion of lubricated PTFE fine powder is carried out by using the extrusion head of the extruder as the ram for forcing the powder through the extrusion orifice in the extrusion head, i.e. the extrusion head is moved against the powder, whether in particle form or preform form, to cause the ...


3
Hugues Preudhomme, Coralie Serres Piole, Annie Commarieu, Fabrice Aubertin: Method for detecting tracer compounds for hydrocarbon production. Total, Marsh Fischmann & Breyfogle, October 7, 2014: US08853619 (2 worldwide citation)

The invention concerns a method for surveying a subsurface formation containing hydrocarbons, comprising: injecting at least one tracer compound into the subsurface formation; recovering a fluid derived from the subsurface formation; detecting the tracer compound in the fluid by liquid chromatograph ...


4
Annie Commarieu, Fabrice Aubertin, Nicolas Crowther, C├ędric Louis, Pascal Perriat, Matteo Martini, Olivier Tillement: Use of nanoparticles for labelling oil field injection waters. Total, Patterson Thuente Pedersen P A, February 16, 2016: US09260957

The present invention relates to the development of tracer fluids, more generally, that of aqueous liquids, intended to be injected under pressure in an oil reservoir, for example from an injection well up to a production well. The object of the invention is to propose a new method of study of a sol ...


5
Daniel N Levy, Fabrice Aubertin: Paste extrusion apparatus. E I du Pont de Nemours and Company, January 14, 2003: US06506043

An extrusion head for use in the paste extrusion of lubricated PTFE fine powder, the extrusion head comprising an external die having an inlet, a chamber, and an outlet, a tip positioned in the chamber of the die, the tip having a circumferential ridge formed therein that extends into the chamber, t ...


6
Hugues Preudhomme, Coralie Serres Piole, Annie Commarieu, Fabrice Aubertin: Method for detecting tracer compounds for hydrocarbon production. Total, October 27, 2011: US20110260051-A1

The invention concerns a method for surveying a subsurface formation containing hydrocarbons, comprising: injecting at least one tracer compound into the subsurface formation;recovering a fluid derived from the subsurface formation;detecting the tracer compound in the fluid by liquid chromatography ...