Shallow layer drilling plug pressurization anti-jacking device and operation method

The invention relates to the technical field of underground workover treatment, in particular to a superficial layer drilling plug pressurization anti-jacking device and an operation method. Comprising an upper tray, a lower tray and a plurality of hydraulic cylinders arranged between the upper tray...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GAO JIAN, ZHAO FAWU, WANG QI, YANG GUANGJIAN, WU XIUHUA, SUN BAOJING, DU HANSONG, LIU JINMING, LIU SHAOLIANG, XI QINGJIAN
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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