Naegel
Mathieu Naegel, Strasbourg FR
Patent application number | Description | Published |
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20100300759 | DRILLING FLUID CONTAINING CARBON NANOTUBES - The present invention relates to a viscoelastic drilling fluid for drilling in underground rock formations, comprising | 12-02-2010 |
20130248257 | Drilling Fluid Composition - The invention pertains to a drilling fluid composition comprising:—at least one (per)fluoropolyether oil comprising recurring units of formula —CF(CF3)CF2O— said oil having a kinematic viscosity of 30 to 80 cSt measured according to ASTM D455 standard at 20° C. [oil (E)] and possessing a polydispersity index (PDI) of at least 1.15; and—at least one (per)fluoropolyether phosphate comprising at least one perfluoropolyoxyalkylenic chain and at least one phosphoric acid group, in its acid, amide, salt or ester form [phosphate (P)], to a method for its manufacture and to its use in a drilling rig equipment. | 09-26-2013 |
Matthieu Naegel, Strasbourg FR
Patent application number | Description | Published |
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20100133013 | BIT FOR DRILLING WELLS AND ASSOCIATED DRILLING METHOD - The invention relates to a bit for drilling wells comprising:—a front face,—a plurality of radial blades ( | 06-03-2010 |
Wulf Naegel, Koeln DE
Patent application number | Description | Published |
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20100000875 | Low-temperature fused salt electrolysis of quartz - A process for preparing silicon comprising the following steps | 01-07-2010 |