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The Oil & Gas Corrosion & Scale Inhibition Technical Community of Interest is a group of people (both AMPP members and nonmembers) who have come together for the purpose of furthering a common cause by sharing wisdom, knowledge, information, and/or data for the application and evaluation of chemical and physical methods of corrosion control and control of related problems, such as scale, bacteria, paraffin, and hydrates, for oil and gas.
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Design Guidelines for Minimizing Damage Downstream of Chemical Injection Points

  • 1.  Design Guidelines for Minimizing Damage Downstream of Chemical Injection Points

    Posted 2 days ago

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    Note: This is going to SC15 & Oil & Gas Corrosion & Scale Inhibition.

    Thank you in advance for any feedback you are willing to share.

    I am looking for written guidelines that talk about how far upstream a chemical injection point should be from a change in direction, diameter, etc to prevent injection / mixing point corrosion.  API 570 says 25ft, or two changes in direction and recommends inspecting 10 * the pipe diameter downstream. SP0114 doesn't have specific dimensions that I could find.

    In my head this means that any chemical injection points should be a minimum of 10D upstream of any valves or drains as well.

    Is 10 the right number, or a conservative assumption?

    Does anyone have any design criteria that they are willing to share? 

    Additional thoughts or concerns?

    Krista



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    Krista Heidersbach
    Brown Corrosion Services Inc
    Houston TX
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