| 11767724 |
Valve element for drilling elements, drilling elements and method for assembling the valve element to drilling elements |
— |
2023-09-26 |
| 10487601 |
Control equipment for monitoring flows of drilling muds for uninterrupted drilling mud circulation circuits and method thereof |
— |
2019-11-26 |
| 10190375 |
Connection device for connecting a secondary circuit to a drilling element for the circulation of drilling fluids in an oil well |
— |
2019-01-29 |
| 10145184 |
Anti-friction device of drilling elements |
— |
2018-12-04 |
| 10113379 |
Method of assembly of a string of elements for deepwater drilling and ultradeep obstruction element and corresponding use of the same in said drilling string |
— |
2018-10-30 |
| 9976366 |
Valve assembly for drilling mud circulation and associated drilling elements |
— |
2018-05-22 |
| 8430175 |
Equipment for intercepting and diverting a liquid circulation flow |
Giorgio Girola |
2013-04-30 |
| 8136597 |
Method and system for the extinction of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions |
Paolo Ferrara |
2012-03-20 |
| 7845433 |
Device and procedure for the insertion of a new drilling string-element into the drill-string of a well |
Giorgio Girola |
2010-12-07 |
| 7195730 |
Method for making centralizers for centralising a tight fitting casing in a borehole |
Fabrizio Zausa |
2007-03-27 |
| 7055623 |
Method for the drilling of the initial phase of deep water oil wells with an underwater well head |
Claudio Molaschi, Guido Brusco |
2006-06-06 |
| 7004333 |
Process for the separation of hollow glass microspheres from muds containing them |
Armando Marcotullio, Raffaella Monga, Giuseppe Belmonte, Giovanni Ferrari |
2006-02-28 |
| 5637806 |
Procedure for evaluating the friction characteristics of a shouldered threaded connection |
Anatoly Baryshnikov, Paolo Ferrara |
1997-06-10 |