Carry formula of putting spiral shell sucker -rod pumping bleeder

The utility model provides a carry formula of putting spiral shell sucker -rod pumping bleeder is by the top connection, connect at the outer barrel of top connection below, install in the internal sealed core section of thick bamboo of urceolus, install and form at a plurality of sealing washers on...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG SHIXIONG, SU GUOQING, ZHAO PANWANG, LUO BIN, ZHAO HEXIANG, ZHAO HENGREN, LI QUANHENG
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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