Special test pipe nipple for annulus test mine entrance

The utility model relates to a special test pipe nipple for an annulus test mine entrance, which is used for connecting the test port of an oil field mine entrance and a test gate. The utility model is characterized in that screw threads are formed on the outer wall of an upper joint, a pressing scr...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	XING TINGRUI, WANG TAO, ZUO YI, MAO TIANCONG, ZHANG JUN, GONG YUYANG, WU SHUNZHOU
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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