LONG-TERM SCALE CONTROL IN THE BAKKEN SITUATION The Bakken’s combination of high TDS (>250,000 mg/L), high calcium (>20,000 mg/L), high iron (>100 mg/L), and high temperatures (>250 °F) limits the amount of highly effective scale inhibitors. The use of scale inhibitors in frac jobs in the Bakken is common practice, as operators seek to control scale formation due to mixing of incompatible brines and self- scaling brines. Application during the frac job can provide scale inhibitor residual returns to protect against scale formation during flowback and early well life when conditions prevent continuous or batch application of product. Control of scale formation can also help alleviate other issues, such as erosion corrosion, potentially extending pump run times.LONG-TERM SCALE CONTROL WITH S

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