Adjustable constant-current stopper

Adjustable constant-current stopper

The utility model relates to an adjustable constant-current stopper for testing a water injection well in the oil extraction. The lower part of a salvaging head on the constant-current stopper is arranged in a shell, a regulating rod is fixed at the lower end, and threads in the lower part of the re...

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Hauptverfasser: ZHANG CHUANJUN, WANG HUAIYUAN, WU YUHUA, SUN YUFEI, HOU ZHUOZHI
Format: Patent
Sprache: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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creator ZHANG CHUANJUN
WANG HUAIYUAN
WU YUHUA
SUN YUFEI
HOU ZHUOZHI
description The utility model relates to an adjustable constant-current stopper for testing a water injection well in the oil extraction. The lower part of a salvaging head on the constant-current stopper is arranged in a shell, a regulating rod is fixed at the lower end, and threads in the lower part of the regulating rod are matched with threads of a regulating sleeve; a spring guide sleeve is arranged at the lower head face of the regulating rod, a compression spring is arranged in the spring guide sleeve, and the lower end of the compression spring is clamped in a bayonet in the upper head face of a mobile valve; a sealing packing sleeves the outer wall of the regulating sleeve, and a water inlet is formed in the regulating sleeve wall; a water outlet is formed in a jacket. The adjustable constant-current stopper is capable of realizing the constant-current water injection for the water injection well of an oilfield, changing the size of a water nozzle and realizing test regulation through repeated throwing and salvaging, saving the labor force, lowering the test cost and improving the water injection pass percent.
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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 Adjustable constant-current stopper
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