Sky pulley for annulus test of rod-pumped well

The invention provides a sky pulley for an annulus test of a rod-pumped well, and belongs to the field of oil field equipment. The sky pulley comprises a pulley body, a supporting rod and a base, thepulley body is rotatably arranged at the first end of the supporting rod, a sliding groove is formed...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHEN WEI, WANG WENXIN, ZHANG XUESHAN, LIU PENG, CHENG ZIYANG, ZHAO LI'AN, YOU LIZHONG, WEI DEFANG, LI MENGRAO, ZHANG ZONGLIANG, WANG HONGJUN, DENG BING, YANG CHENG, WANG ZHAOHUI, LI GUOWEI, YUAN BIN, ZHAO YUEHUA, CUI TILIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CAPSTANS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HAULING HOISTING HOISTS LIFTING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS TACKLES, e.g. PULLEY BLOCKS TRANSPORTING WINCHES
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