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Float Valve Sub (Plunger Type Float Valve, Flapper Type Float Valve, G Type Float Valve, F Type Float Valve)

Float Valve Sub (Plunger Type Float Valve, Flapper Type Float Valve, G Type Float Valve, F Type Float Valve)

Float Valve Sub Float Valve Sub is usually connected on the top of the bit to control down hole liquid. While stopping pump and connecting with single, it can prevent waterhole from being plugged by re-flowing drilling. When blowout occurs, it can serve as splash valve to prevent liquid...

Detailed description

Float Valve Sub

Float Valve Sub is usually connected on the top of the bit to control down hole liquid. While stopping pump and connecting with single, it can prevent waterhole from being plugged by re-flowing drilling. When blowout occurs, it can serve as splash valve to prevent liquid flowing into drilling tools.
Type: Plunger Type Float Valve and Flapper Type Float Valve.


  1. Structure
    Float valve sub consists of sub, float valve unit and accessory extractor. While using, float valve unit should be put into joint body. Float valve unit is composed of body, sealed ring, seal gland, valve bonnet, torsional spring and  limit marker.

  2. Principle
    Working principle of float valve sub is rather simple.When normal drilling and pumping circulation,the bonnet of float valve unit will be opened completely.If well kick or pumping off occurred,the bonnet will close waterhole depends on elastic force of torsional spring.It can prevent blowout in the drilling tool.
    Float subs are used to house a float valve, also known as a back pressure valve. The float valve functions as a safety between the well bore and the inside of the drill string to prevent drilling fluids from back flowing up to
    Surface.


    Technical Parameters-- Float Valve Sub

  3.  

    Model

     

    Sub O.D.(mm)

     

    Joint connection

     

    Valve O.D.(mm)

     

    I.D.(mm)

    FFJT241

    241.3

    7 5/8 REG

    ф121

    ф76

    FFJT228

    228.6

    7 5/8 REG

    ф121

    ф76

    FFJT209

    209.6

    6 5/8 REG

    ф121

    ф76

    FFJT203

    203.2

    6 5/8 REG

    ф121

    ф71

    FFJT178

    177.8

    4 1/2 IF

    ф98

    ф71

    FFJT165

    165.1

    4 1/2 REG

    ф88

    ф57

    FFJT146

    146

    4 1/2 REG

    ф88

    ф57

    FFJT121

    121

    3 1/2 REG

    ф61

    ф51

    FFJT108

    108

    3 1/2 REG

    ф61

    ф38

     

If you have any further requirements, please feel free to contact us by sales@sxgtpm.com

Within those famous China oil and gas float valve sub manufacturers, GAOTON is a professional such supplier, producer and provider, welcome to wholesale petroleum and oilfield API float valve sub from our factory.

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