Page 200 - Handbook Of Multiphase Flow Assurance
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Naphthenate management                       197

                                           BOEM INC warnings per facility
                      5.00
                      4.50
                      4.00
                      3.50
                      3.00
                      2.50
                      2.00
                      1.50
                      1.00
                      0.50
                      0.00
                         2011     2012     2013     2014     2015     2016     2017
            FIG. 6.1  BOEM warnings per facility between 2012 and 2016.


                                       BOEM INC component shut-in per facility
                      2.00
                      1.80
                      1.60
                      1.40
                      1.20
                      1.00
                      0.80
                      0.60
                      0.40
                      0.20
                      0.00
                        2011      2012     2013     2014     2015     2016     2017
            FIG. 6.2  BOEM component shut-ins per facility between 2012 and 2016.

                                       Naphthenate management

              Calcium naphthenate is one of the concerns in production chemistry which may plug pro-
            duction systems and process equipment. Naphthenate precipitates when naphthenic acid re-
            acts with metal ions such as calcium or sodium.


            Properties of naphthenates
              Naphthenate density ranges between water and oil densities. Naphthenates may collect at
            oil-water interface and behave as surfactants by stabilizing emulsions.
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