Buoyancy assist tool with center diaphragm debris barrier

Buoyancy assist tool with center diaphragm debris barrier

A downhole apparatus comprises a casing string with a removable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the removable plug and the removable plug and the flow barrier defining a buoyancy chamber therebetween. A debris barrier positioned above the rem...

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Hauptverfasser: Ahuja, Mayur Narain, Kim, Byong Jun, Helms, Lonnie Carl, Parameshwaraiah, Rajesh, Yuan, Min Mark, Patil, Ishwar Dilip
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 Ahuja, Mayur Narain
Kim, Byong Jun
Helms, Lonnie Carl
Parameshwaraiah, Rajesh
Yuan, Min Mark
Patil, Ishwar Dilip
description A downhole apparatus comprises a casing string with a removable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the removable plug and the removable plug and the flow barrier defining a buoyancy chamber therebetween. A debris barrier positioned above the removable plug comprises a rigid annular ring with a flexible diaphragm covering the center opening defined by the annular ring.
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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 Buoyancy assist tool with center diaphragm debris barrier
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