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Thread: Chokes

  1. #1
    John Taylor Guest

    Chokes

    What are the wear resistance alternatives for chokes used in the oil industry?

    What do ceramic wellhead hydrocyclone linings look like?

    Regards,

    John.

  2. Chokes

    Hi John,

    I know that ceramic chokes are used by the oil industry, but I don't know what other materials are used - if you really want to know, I can find out.

    The image below shows a choke set-up and consists of a number of ceramic cones set in line in a flanged steel pipe. As I understand it, each cone/choke has the effect of reducing the line pressure; the more chokes you put in the line, the greater the pressure drop.

    Sorry I can't be more helpful.

    Mike.
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  3. Hydrocyclones

    Hi John,

    Ceramic wellhead hydrocyclone linings are supplied as multi-part systems, as in the image below.

    Use this URL for further images of ceramic wellhead hydro-cyclone lining systems http://www.omegaslate.com/hydro1.htm

    Regards,

    Mike
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  4. #4
    John Taylor Guest

    Wellhead Hydrocyclones

    What is the maximum size limitations for ceramic lining systems, when it comes to wellhead cyclones?

  5. John,

    I don't really know how large wellhead hydrocyclones need to be; 24" bore is the largest ceramic lined unit I've come across. The very high pressure and velocity conditions these units are expected to work under requires quite a specialised and robust ceramic lining system capable of facilitating fast pressure equalisation from front to back of the lining system. Typically, one-piece annular ceramic sections are used, as are curved tongue and grooved sections.

    At a guess, I would say that a 48" bore wellhead hydrocyclone is feasible as far as ceramic lining is concerned, but my field is not hydrocyclone design and you would need to speak to a specialist design and manufacturing organisation, such as Cyclotech
    Limited, ( www.cyclotech.co.uk) if you have questions relating to specification and design of these units.

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