Mechanical packer seals up in two groups

The utility model discloses a mechanical packer seals up in two groups, seal an urceolus and a lower mandrel including last dabber, seat, go up the dabber and be sharp setting in the interval in order with lower mandrel, just going up dabber and lower mandrel looks remote site and sealing urceolus b...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SHI JUNSHE, LI YUNHU, SHI XIAOPING, CAI WEI
Format:	Patent
Sprache:	chi ; 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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