INDEXING DART SYSTEM AND METHOD FOR WELLBORE FLUID TREATMENT

A wellbore dart comprises a body conveyable through a tubing string, the body defining a central flow bore to allow circulation of fluid from a tool through the wellbore dart; an internal valve to seal the central flow bore; a valve actuator; a collapsible annular protrusion; and a control mechanism...

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Bibliographic Details
Main Authors Lisowski Trevor Nicholas Stanley, Stainthorpe Brian Kenneth
Format Patent
LanguageEnglish
Published 22.06.2017
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
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Summary:A wellbore dart comprises a body conveyable through a tubing string, the body defining a central flow bore to allow circulation of fluid from a tool through the wellbore dart; an internal valve to seal the central flow bore; a valve actuator; a collapsible annular protrusion; and a control mechanism configured to register a dart seat count responsive to dart seat contact and switch the dart between a run in configuration and landing configuration responsive to registering a target number of counts.
Bibliography:Application Number: US201615253500