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SCALETREAT 852ND Inhibits Scale and Maximizes Value for GoM Operator

Benefits

  • Successful prevention of scale deposits ensures sustainable flow assurance
  • Field application prevented the need for frequent plant shut-downs to remove scale build-up in strainers and heat exchangers
  • Increase in overall plant efficiency and operater revenue
  • No further process upsets since treatment began 

Background

A major producer in the Mississippi Canyon area of the Gulf of Mexico was experiencing severe scale build-up in the process plant. The field is located in nearly 2,000 meters (6,000 feet) of water, where several wet tree wells flow to a floating production system. The reservoir temperature is 250°F, and the topside facilities‘ average processing temperature is 135°F.

Severe scale deposition was occurring in the heat exchangers and strainers in the processing facility, causing unplanned shut-downs every month for cleaning. This resulted in production losses and decreased earnings for the operator. Images of the scale build-up are shown below.

February_10_2014

Clariant Oil Services Solutions and Value Delivered

After a thorough review and system analysis, Clariant Oil Services deployed the polymeric scale inhibitor SCALETREAT 852ND to meet all of the operator’s requirements. Laboratory tests indicated an initial treatment of SCALETREAT 852ND to be 20 ppm, injected continuously into the inlet of the Low Pressure Inlet Separator.

Injection commenced after a scale removal operation and all routine inspections showed no discernable scale build-up, as seen below.

February_10_2014-2

Application of SCALETREAT 852ND provided substantial value to the operator by negating shut down and manual cleaning interventions. The monthly shut downs incurred an annual production loss of 7,000 bbl of oil plus the associated cost of performing the intervention with a specialized cleaning crew. This increased overall plant efficiency and profitability, with minimal additional operating cost associated with the chemical.

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