Fiber reinforced plastics (FRP) suspension device for coring inner barrels

Fiber reinforced plastics (FRP) suspension device for coring inner barrels

The utility model relates to a fiber reinforced plastics (FRP) suspension device for coring inner barrels used in petroleum natural gas coring operation. The suspension device comprises an upper connector(1), a floating tube (2), a seal ring (3), a mandrel (4), a crossover coupling (5), and a spring...

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Hauptverfasser: LAN ZHONGYANG, HU GUOQIANG, MU ZONGJIE, QIAO DONGYU, CAO SHUYUAN, LUO YUHENG, ZANG CHUANZHEN, LI XIAOJUN
Format: Patent
Sprache:chi ; eng
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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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creator LAN ZHONGYANG
HU GUOQIANG
MU ZONGJIE
QIAO DONGYU
CAO SHUYUAN
LUO YUHENG
ZANG CHUANZHEN
LI XIAOJUN
description The utility model relates to a fiber reinforced plastics (FRP) suspension device for coring inner barrels used in petroleum natural gas coring operation. The suspension device comprises an upper connector(1), a floating tube (2), a seal ring (3), a mandrel (4), a crossover coupling (5), and a spring (6), wherein, the outer step surface at the lower end of the upper connector (1) is matched with the inner step surface at the upper end of the floating tube (2); the outer step end surface of the upper connector (1) is propped against the inner step end surface of the floating tube (2); the mandrel (4) is in threaded connection with the upper connector (1); the inner surface of the floating tube (2) is in clearance fit with the outer surface of the mandrel (4); the width of the lug boss at the lower end of the mandrel (4) is smaller than that of the inner groove in the crossover coupling (5); the spring (6) is arranged in the mandrel (4); and the O-type seal ring is arranged between the upper connector (1) and th
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subjects 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
title Fiber reinforced plastics (FRP) suspension device for coring inner barrels
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