Float valve assembly for drilling and workover operations

A float valve assembly is configured to be positioned within in a central bore of a tubular string disposed in a wellbore drilled into a subterranean zone. The float valve assembly includes a valve main body and a plunger, and the plunger is biased by a spring towards a closed position and is config...

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Hauptverfasser: Jathmi, Mohammed A, Alharbi, Naif Mohsen Mosleh
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creator Jathmi, Mohammed A
Alharbi, Naif Mohsen Mosleh
description A float valve assembly is configured to be positioned within in a central bore of a tubular string disposed in a wellbore drilled into a subterranean zone. The float valve assembly includes a valve main body and a plunger, and the plunger is biased by a spring towards a closed position and is configured to open in response to a fluid pressure in a downhole direction. The surface of the plunger main body includes a plurality of substantially flat lateral faces forming a pyramid. A hydrophilic nano-coating comprising particles with sizes of between 1 and 100 nanometers is disposed on at least a portion of the surface of the plunger main body.
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subjects ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FILLING PASTES
FIXED CONSTRUCTIONS
INKS
METALLURGY
MINING
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
USE OF MATERIALS THEREFOR
WOODSTAINS
title Float valve assembly for drilling and workover operations
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