Gas injection protection device

The utility model provides a gas injection protection device, include: the casing, the first end of casing is used for being connected with oil production pipe's upper portion oil pipe, and the secondof casing end is used for being connected with oil production pipe's lower part oil pipe,...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HUANG YANHONG, BI YOUJUN, ZHAO CHANGHONG, WANG LI, LI XIAOKUI, WU ZAOLIANG, WEI XINCHUN, LIU YONG, YANG YUYAO, ZHANG LIMING
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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