Pressure balance guider and method for lowering heating steel cable by using pressure balance guider

The invention relates to a pressure balance guider and a method for lowering a heating steel cable by using the pressure balance guider. The pressure balance guider comprises a pressure balance cylinder and a guide head fixed at the bottom of the pressure balance cylinder, the top of the pressure ba...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG YONGXIN, DING QIANFENG
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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