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AbstractUnder deepwater operating conditions, hydrates and wax can often form blockages in a pipeline. The resultant costs to remediate the situation include not only those for removing the blockage, but also for lost production.The KHI provided lower operating costs plus better environmental conditions than methanol, which had been used before the well was re-completed.The advantages and disadvantages of this KHI product are reviewed. Some of the advantages of KHIs (compared to methanol) include reduced logistics, removal of the undesirable methanol from the crude, plus no oil/water quality issues.This continuous injection application in the deepwater Gulf of Mexico is special since KHIs have generally not been used there. Most previous continuous injection case histories have been from the North Sea. Also, wax control additives were used in conjunction with the LDHIs.
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