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AISI 4145H Modified Alloy Steel Downhole Drilling Tools API Square Kelly Drill Pipe

Categories Downhole Drilling Tools
Brand Name: TIPTOP
Model Number: Square Kelly
Certification: API
Place of Origin: China
MOQ: Negotiable
Price: Negotiable
Payment Terms: T/T, L/C, D/A, D/P
Supply Ability: 20000 pcs per month
Delivery Time: 3~20 days
Packaging Details: Iron Frame Packaging
Product Name: Square Kelly
Material: AISI 4145H modified alloy steel
Standard: API
Specification: All specifications
Colour: As required
Shape: Square and hexagon
Application: Well drilling
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    AISI 4145H Modified Alloy Steel Downhole Drilling Tools API Square Kelly Drill Pipe

    Downhole Drilling Tools - API Square Kelly drill pipe and hexagonal kelly


    Introduction:


    Kelly is on the top of the drill stem.Kelly is main driver of the whole drill string. It transmits drill stem weight and torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. When assembled with down hole motor and Turbodrill tools, Kelly should bare the stem weight and Reverse torque,it will Measure the depth of a well and provide a circulation channel. Kelly consists of a driving part (square or hexagonal), upper joint (LH connection) and lower joint (RH connection).


    Kelly is the drive part of whole drill stem, it has two types, square kelly and hexagonal kelly and all of them are manufactured comfort to API Spec7-1 and SY/T6509-2000 criterion.


    Our Square& Hexagonal kelly are made from AISI 4145H modified alloy bars that are quenched and tempered full length. After such heat treatment, its brinell hardness can reach 285-341. Kelly's end, drive cross-section and joint are all processed and tested comform to API criterion.


    Specifications:


    Kelly SizeLengthUpper Box ConnectionLower Pin ConnectionI.D
    (mm)
    Driving Section
    mminmmType(LH)O.D. (mm)Cross Flat (mm)For Square (mm)Cross Corner for Hex (mm)
    StdOptionalStdOptionalThreadO.D(mm)
    63.52-1/212.196-5/8
    REG
    4-1/2
    REG
    196.814685.731.863.583.3
    76.2312.196-5/8
    REG
    4-1/2
    REG
    196.8146NC26104.844.476.210085.7
    88.93-1/212.196-5/8
    REG
    4-1/2
    REG
    196.8146NC31120.657.288.9115.1100.8
    1084-1/412.96-5/8
    REG
    4-1/2
    REG
    196.8146NC38158.871.4108141.3122.2
    NC38161.971.4108141.3122.2
    133.45-1/412.96-5/8
    REG
    4-1/2
    REG
    196.8146NC46177.882.6133.3175.4151.6
    NC50177.882.6133.3175.4151.6
    152.4612.96-5/8
    REG
    196.81465-1/2FH152.4173
    NC56152.4173



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