Hydrate Remidiators
  • Vote Up0Vote Down Sumit May 2008
    Posts: 17
    Which is the Best ? Methanol or MEG for Subsea condition, Gas Well . Water depth 500m to 1700 mt.

    gas composition 99.5 % methane and 0.38 % water.

    Production 250 - 350 mmscfd

    no of wells 18

    can some body guide me regarding the selection of hydrate remediators... which chemical shall I go for and why.....

    Best Regards,
    Sumit Rama
    09959988814
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  • Vote Up0Vote Down chusker15 May 2008
    Posts: 2
    I'd recommend that you read this paper by the folks at CCR:  http://www.reclaim.com/site/reference_docs/reclaimation_regeneration_of_glycols_used_for_hydrate_inhibition.pdf

    It should give you a very good start in comparing the two technologies.  Some key points are below:

    Annual chemical costs will be higher using the MeOH even if you have provisions for recovery. 

    MEG is able to dehydrate your sales gas to pipeline specifications (typically <7lb/mmscf). 

    MeOH has a lower viscosity and your pumping costs will be lower.  The molecular weight is also lower enabling you to use more dilute solutions.

    MeOH losses to the vapor phase will be much higher than MEG.

    The regeneration of MeOH has no solid waste to dispose of.

    MeOH is more volatile than MEG; potential safety concerns.
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