+33 3 73 58 00 26
sales@command-smfi.com
5 rue des Guerins, 58200 Cosne Sur Loire, France
  • HOME
  • ABOUT US
    • COMMAND-SMFI
    • QUALITY
      • QHSE POLICY
      • CERTIFICATES
  • DRILLING
      • APPLICATIONS
      • ONSHORE
      • OFFSHORE
      • GEOTHERMAL

      • OTHER
      • HDD
      • CORING
        • PRODUCT LINES
        • DRILL PIPES
        • HEAVY WEIGHT DP
        • DRILL COLLARS
        • SUBSTITUTES
        • PUP JOINTS
        • STABILIZERS
          • SAFETY VALVES
          • KELLY COCK
          • IBOP
          • RDCV
        • MACHINING
          • MACHINING CAPABILITIES
          • SPECIFIC SKILLS
        • STOCK
        • NEWS
        • CONTACT US

        KELLY COCK

        1. HOME
        2. DRILLING
        3. SAFETY VALVES
        4. KELLY COCK

        Application & General Use

        Kelly Cock Valves are devices that allow for shutting the internal bore of the drill string keeping the mud column in the top drive or the Kelly when disconnecting from the drill string. It controls the flow of the mud during normal drilling operations and is operated from the rig floor. Standard configurations include two Kelly Cock Valves; an upper Kelly Valve and lower Kelly Valve.

        Product Description

        The Kelly Cock Valve is designed and manufactured as a one-piece or a two-piece Kelly Valve for free-passage and maximum circulation of the drilling fluid minimizing pressure loss.
        Kelly Cock Valves are supplied with either API or proprietary connections upon request.
        All Kelly Cock Valves are manufactured according to the latest edition of the API 7-1 or NS1 specification.
        KC2S Kelly Valves are available in either standard or H2S resistant versions and are supplied according to Class 1 construction.

        Main features:
        • Simple construction for trouble-free operations and easy servicing
        • Sealed lubrication packing
        • 10,000 or 15,000 PSI working pressure (testing pressure 15,000 and 22,500 PSI respectively)
        • KC2S Kelly Valves are delivered with an operating wrench and disassembly tool

        Other configurations available upon request, subject to engineering department approval.
        The KC2S product range is available in 9 different series allowing the following passage IDs:
        2011-1/4
        2021-3/4
        2032-1/8
        2042-1/4
        2052-7/16
        2062-13/16
        2073-1/16
        2083-1/4
        2094-1/4

        Hydraulic Testing

        Each Kelly Valve is hydraulically bench tested according to API spec 7-1 (latest edition) and delivered with its individual pressure test records.

        The tests are carried out in two steps:
        • SHELL TESTING during which the valve is pressurized to the test pressure for 3 minutes, then depressurized and pressurized again for at least 10 minutes.
        • SEAT TESTING during which the valve is pressurized from the pin end to its working pressure for at least 5 minutes.
        During the pressure-holding period timing starts when pressure stabilization is achieved. No visually detectable leakage is permitted during the test time period and the pressure drop shall be no greater than maximum 1% of the pressure test value with a zero leak rate.

        Valve Compatibility

        In case the Retrievable Drop-in Check Valve (RDCV) has to be dropped into the drill string, the compatibility of RDCV OD and KC2S free ID passage is a critical factor. The table to the right shows shows the compatibility between KC2S Kelly Cocks and Drop-in Check Valves.

        KELLY COCK SPARE PARTS CATALOG
        KC2S SERIESKC2S ID (IN)RDCV SERIES
        2021-3/4 ID901
        2032-1/8 ID902
        2042-1/4 ID903
        204/2052-1/4 / 2-7/16 ID904
        2062-13/16 ID905
        2073-1/16 ID906
        2073-1/16 ID907
        2083-1/4 ID908

        One Piece Kelly Cock Valve

        Figure 1 – Kelly Cock

        Cutaway view

        Figure 2 – Kelly Cock

        Exploded view

        TYPE OF KITDESCRIPTIONSTANDARD VERSIONH2S TRIM VERSION
        Seal KitIncludes all parts needed for replacement each time the Valve is disassembled; i.e. O-Ring Seals, Springs, Knob Plate and Snap Ring or Screw Set.Items 2, 6, 8, 9, 11, 13 & 14Items 6, 8, 9, 11, 13, 14 & 17
        Complete Repair Kit with ToolingIncludes all inside Valve components plus its Operating Wrench and Disassembling Tool.Items 2 to 16Items 3 to 14 &17
        Complete Repair Kit without ToolingIncludes all KC2S Inside Valve components.Items 2 to 14Items 3 to 17

        Two Piece Kelly Cock Valve

        Figure 1 – Kelly Cock

        Cutaway view

        Figure 2 – Kelly Cock

        Exploded view

        TYPE OF KITDESCRIPTIONSTANDARD VERSIONH2S TRIM VERSION
        Seal KitIncludes all parts needed for replacement each time the Valve is disassembled; i.e. O-Ring Seals, Springs, Knob Plate and Snap Ring or Screw Set.Items 2, 6, 8, 9, 11, 13 & 14Items 6, 8, 9, 11, 13, 14 & 17
        Complete Repair Kit with ToolingIncludes all internal parts plus Operating Wrench and Disassembling Tool.Items 2 to 16Items 3 to 14 &17
        Complete Repair Kit without ToolingIncludes all internal parts.Items 2 to 14Items 3 to 17

        Operational Benefits

        COMMAND-SMFI offers KC2S Kelly Valves with PTFE rings inserted in both upper and lower seats, which provide high sealing capability, even at low pressures. KC2S internal parts are made of high grade heat treated stainless steel. The design of the body limits plug rotation to 90° between open and closed positions. Two KC2S versions are offered to suit drilling environments:
        • The standard version for normal drilling conditions with an inside surface treated to enhance mud corrosion resistance and maintenance operations.
        • The H2S trim version which has been designed for H2S environments with internal parts made of corrosion resistant materials matching the NACE MR0175 standard (latest edition), fitted in a standard body.
        • Full NACE available upon request.
        DRILL PIPES
        HWDP
        DRILL COLLARS
        SUBSTITUTES
        PUP JOINTS
        STABILIZERS

        5 rue des Guerins, 58200 Cosne Sur Loire, France

        sales@command-smfi.com+33 3 73 58 00 26

        For complete information on our products, download our catalog:

        Download
        © 2020 COMMAND-SMFI
        This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish.
        Accept Reject
        Privacy & Cookies Policy

        Privacy Overview

        This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
        Necessary
        Toujours activé
        Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
        Non-necessary
        Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
        Enregistrer & appliquer