Packer around middle layer

The invention belongs to the technical field of oilfield downhole tools, and particularly relates to a packer around a middle layer. The packer comprises an upper packer body, a middle communicating pipe column and a lower packer body, the middle communicating pipe column communicates the upper pack...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHOU CHUNYANG, ZHANG YOUXING, GAO TIEQING, LIU WENJUN, YUAN FENG, JIA GUANGCAI, GUAN MINGJUN, REN YONGQING, ZHAO PING, JIA GUANGSHENG
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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