Acid Mixing with Seawater Type of Scale Inhibitor Concentration, #1, #2, #3, #4, #5, ppm 77°F 77°F 150°F 210°F 250°F 0 wt% Completely Spent HCl A 50 No No No No   B 50 No No No No   C 50 No No No No   D 50 No No No No   E 50 No No No No   F 50 No No No No   No SI 0 No Yes Yes Yes Yes 1 wt% Partially Spent HCl A 50 No No Yes Yes   150 No Yes Yes*     B 50 No No Yes Yes   150 No Yes Yes*     C 50 No No Yes Yes   150 No No Yes Yes   D 50 No No Yes Yes   150 No Yes Yes*     E 50 No No Yes Yes   150 No No No No   F 50 No No Yes Yes   150 No No Yes Yes   No SI 0 No No Yes Yes   5 wt% Partially Spent HCl No SI 0 No No No No   10 wt% Partially Spent HCl No SI 0 No No No No   15 wt% Live HCl No SI 0 No No No No

Table 4: Summary of batch tests.