Well completion system with flapper control valve
作者： James R. Longbottom , Karluf Hagen , Nam V. Le , Robert W. Crow , John C. Gano
DOI:
关键词: Production tubing 、 Mechanical engineering 、 Completion (oil and gas wells) 、 Engineering 、 Ball valve 、 Spring (mathematics) 、 Closed position 、 Control valves 、 Valve guide 、 Butterfly valve 、 Structural engineering
摘要: A well control valve assembly prevents flow from or to completion segments further downhole the once stimulation stimulation/shifter string has been removed production tubing string. The features a shaped flapper plate which, when opened, conforms closely shape and size of string's interior diameter. is biased toward closed position by compression spring arrangement that includes an arm which levers upward seating surface. assembly's closure mechanically induced not responsive sensed condition.
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