UNIVERSAL DRILLING RIG

1355447 Boring earth &c HEATH & SHERWOOD DRILLING Ltd 3 Jan 1972 [4 Jan 1971] 89/72 Heading E1F Boring apparatus comprises a derrick 10 having a travelling block 28 supporting a drill string 30, a drill head 31 having a chuck 53, hydraulic jacks 66 for reciprocating the chuck, a hydraulic mo...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WILLIAM KLAAS, JAMES RYRIE SAVAGE, ELIAS PETER SMITH, LYLE WILLIAM HOKANSON, GILBERT LEVANGIE
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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