FLUID FLOW DURING LANDING OF LOGGING TOOLS IN BOTTOM HOLE ASSEMBLY

FLUID FLOW DURING LANDING OF LOGGING TOOLS IN BOTTOM HOLE ASSEMBLY

Systems and methods for facilitating fluid flow during and after landing of logging tools in a bottom hole assembly are disclosed. A logging tool string is lowered through a drill string and landed in a bottom hole assembly ("BHA") positioned at the end of the drill string. Drilling fluid...

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Hauptverfasser: HRAMETZ, ANDREW ALBERT, MISRA, ARABINDA
Format: Patent
Sprache:eng ; fre ; ger
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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MISRA, ARABINDA
description Systems and methods for facilitating fluid flow during and after landing of logging tools in a bottom hole assembly are disclosed. A logging tool string is lowered through a drill string and landed in a bottom hole assembly ("BHA") positioned at the end of the drill string. Drilling fluid is pumped behind the logging tool to assist with downward movement of the tool. As the logging tool string lands in the bottom hole assembly, fluid flowing downward through the BHA below the logging tool string is blocked by the landed logging tool string. The BHA includes a circulation sub positioned above a landing sub. The circulation sub has at least one port through a wall of the circulation sub which allows fluid flow out of the BHA and into the annulus between the wellbore wall and the BHA when the downward flow is blocked.
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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 FLUID FLOW DURING LANDING OF LOGGING TOOLS IN BOTTOM HOLE ASSEMBLY
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