Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB40667/63Aexternal-prioritypatent/GB1099673A/en
Application filedfiledCritical
Priority to FR991307ApriorityCriticalpatent/FR86915E/fr
Application grantedgrantedCritical
Publication of FR86915EpublicationCriticalpatent/FR86915E/fr
E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
E21B4/00—Drives for drilling, used in the borehole
E21B4/02—Fluid rotary type drives
Landscapes
Engineering & Computer Science
(AREA)
Life Sciences & Earth Sciences
(AREA)
Geology
(AREA)
Mining & Mineral Resources
(AREA)
Mechanical Engineering
(AREA)
Physics & Mathematics
(AREA)
Environmental & Geological Engineering
(AREA)
Fluid Mechanics
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geochemistry & Mineralogy
(AREA)
FR991307A1963-10-151964-10-14Perfectionnements aux moteurs fonctionnant par pression de fluide, notamment pour les engins de forage
ExpiredFR86915E
(fr)