Oil tube suitable for large-inclination well foam drainage gas recovery

The invention discloses an oil tube suitable for large-inclination well foam drainage gas recovery. The oil tube comprises an outer barrel and an inner barrel rotationally arranged in the outer barrel. The inner barrel and the outer barrel are arranged coaxially. Matched threaded fit structures are...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	XIE SIYU, CHENG TAO, ZHANG XU, ZHOU ZHAN, YUAN HUI, MO FEI, WAN XIAOJIN, SHI SHUQIANG, CHU YANYAN, HUANG XIAOLIANG, WANG LAICHAO, WANG JIAWEI, QI ZHILIN, LIANG YUKAI
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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