CA2001262C - Methode et appareil de forage de roche
- Google Patents
Methode et appareil de forage de roche
Info
Publication number
CA2001262C
CA2001262CCA 2001262CA2001262ACA2001262CCA 2001262 CCA2001262 CCA 2001262CCA 2001262 CA2001262 CA 2001262CA 2001262 ACA2001262 ACA 2001262ACA 2001262 CCA2001262 CCA 2001262C
Authority
CA
Canada
Prior art keywords
drill
drills
forward end
rock
pressure fluid
Prior art date
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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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
Application filed by Ingersoll Rand CofiledCriticalIngersoll Rand Co
Publication of CA2001262A1publicationCriticalpatent/CA2001262A1/fr
Application grantedgrantedCritical
Publication of CA2001262CpublicationCriticalpatent/CA2001262C/fr