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WATER CHEMISTRY EVALUATION OF THE EXISTING STIG-1 AND PROPOSED LEC-1 INJECTION WELLS <br /> ------------------------------------------- <br /> Initial solution 1. Domengine Formation Water May 1993 <br /> -----------------------------Solution composition------------------------- <br /> Elements Molality Moles <br /> Alkalinity 1.027e-003 1.027e-003 <br /> Ca 1. 920e-002 1. 920e-002 <br /> Cl 1. 997e-001 1. 997e-001 <br /> K 1.190e-003 1.190e-003 <br /> Mg 3.577e-003 3.577e-003 <br /> N(5) 2.283e-004 2.283e-004 <br /> Na 1.408e-001 1.408e-001 <br /> S (6) 8.422e-005 8.422e-005 <br /> Si 2.777e-004 2.777e-004 <br /> ----------------------------Description of solution----------------------- <br /> pH = 7.850 <br /> pe = 10.000 <br /> Activity of water = 0. 994 <br /> Ionic strength = 2.168e-001 <br /> Mass of water (kg) = 1.000e+000 <br /> Total carbon (mol/kg) = 9.855e-004 <br /> Total CO2 (mol/kg) = 9.855e-004 <br /> Temperature (deg C) = 35.000 <br /> Electrical balance (eq) = -1.359e-002 <br /> Percent error, 100* (Cat- IAnj ) / (Cat+jAnj ) = -3.50 <br /> Iterations = 6 <br /> Total H = 1.110145e+002 <br /> Total 0 = 5.551129e+001 <br /> ----------------------------Distribution of species----------------------- <br /> Log Log <br /> Log <br /> Species Molality Activity Molality Activity <br /> Gamma <br /> OH- 2.074e-006 1.445e-006 -5. 683 -5.840 - <br /> 0.157 <br /> H+ 1.784e-008 1.413e-008 -7 .749 -7.850 - <br /> 0.101 <br /> H2O 5.551e+001 9. 938e-001 1.744 -0.003 <br /> 0.000 <br /> C (4) 9.855e-004 <br /> HCO3- 8.068e-004 5. 954e-004 -3.093 -3.225 - <br /> 0.132 <br /> CaHCO3+ 6.865e-005 5.066e-005 -4 .163 -4.295 - <br /> 0.132 <br /> NaHCO3 3.298e-005 3.467e-005 -4.482 -4.460 <br /> 0.022 <br /> TECHNICAL MEMORANDUM_V3.DOC 4 <br />