Geological survey wireline coring drilled coal-bed gas pressure meter

Geological survey wireline coring drilled coal-bed gas pressure meter

The utility model relates to a geological survey wireline coring drilled coal-bed gas pressure meter at least comprising a fishing hanging mechanism, a packing mechanism, a relief mechanism and a pressure measuring mechanism. The fishing hanging mechanism is composed of a spearhead, a spring, a ball...

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Hauptverfasser: LI ZIZHANG, FANG YONG, LI ZHENGZHAO, FAN LASHENG
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Sprache: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 LI ZIZHANG
FANG YONG
LI ZHENGZHAO
FAN LASHENG
description The utility model relates to a geological survey wireline coring drilled coal-bed gas pressure meter at least comprising a fishing hanging mechanism, a packing mechanism, a relief mechanism and a pressure measuring mechanism. The fishing hanging mechanism is composed of a spearhead, a spring, a ball cover, a sliding base, a spring cotter, a clip chamber, a clip rack, a clip grip, a clip holder, a hanging connector, a central support tube and a connector; the upper end of the spearhead is provided with a connecting structure fitting a wireline fisher. The packing mechanism is composed of an end connector, a telescopic connector, an upper centralizing ring, a packing rubber tube, a middle centralizing ring, a central tube, a lower centralizing ring, a sliding connector, a sliding piston sleeve and an expansion protective pin. The relief mechanism is composed of a connecting push shaft, a sliding shear pin, a sliding shaft, a push bar, a sliding sealed cavity, a hanging pin, a sliding end cover, a sealing sub, a sealing piston, a sealed cavity and a sealed cavity end cover; the sealing sub is provided with a through hole; the sealing piston is provided with a through hole. The pressure measuring mechanism is an electronic downhole pressure gauge.
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The fishing hanging mechanism is composed of a spearhead, a spring, a ball cover, a sliding base, a spring cotter, a clip chamber, a clip rack, a clip grip, a clip holder, a hanging connector, a central support tube and a connector; the upper end of the spearhead is provided with a connecting structure fitting a wireline fisher. The packing mechanism is composed of an end connector, a telescopic connector, an upper centralizing ring, a packing rubber tube, a middle centralizing ring, a central tube, a lower centralizing ring, a sliding connector, a sliding piston sleeve and an expansion protective pin. The relief mechanism is composed of a connecting push shaft, a sliding shear pin, a sliding shaft, a push bar, a sliding sealed cavity, a hanging pin, a sliding end cover, a sealing sub, a sealing piston, a sealed cavity and a sealed cavity end cover; the sealing sub is provided with a through hole; the sealing piston is provided with a through hole. The pressure measuring mechanism is an electronic downhole pressure gauge.</abstract><oa>free_for_read</oa></addata></record>
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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 Geological survey wireline coring drilled coal-bed gas pressure meter
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