Page 288 - Origin and Prediction of Abnormal Formation Pressures

U z 8 2 z 0 II E B 4 ? % E r 4 rn 0 8 9 m 7 m V) g n e!
Variation in the concentration of various components in solutions expelled from srnectite clay saturated with seawater (after Chilingarian et al., 1973, table 1, p.

60 754 160 128 5,180 40 0 64 t5 20 0
59.0 5 12,800 18.990 4,500 38,611
V

620 657 13,200 206 165 4,610 19,170 20 < 0 4,250 28 (5 10 4 38,576
IV 49.5

580 669 13,400 206 189 5,270 19,170 120 0.5 4,200 28 <5 5 17 39,433
111 34.5

560 557 216 165 5,840 20 0 4,100 56 t5 0 14
25.5 13,200 19,200 39,844
Expelled solutions I 16.5 460 644 13,300 226 262 5,350 19,030 20 0 3,800 36 <5 5 2 1 39,2 16
I1

Fraction No.: Cumulative volume, cm3:

supernatant fluid 60 5 572 13,400 210 165 4,610 19,310 20 3 3,750 24 5 15 14 38,804

Concentration, mg/l seawater 690 1,189 10,116 400 520 2,759 18,929 3 34 6,612 - - 43 4 34,423

TABLE 10-9 395) Ion ca2+ Mg2+ Na + K+ HCO, SO:- C1- F- NO, CaC03 ~e~+ Mn2' Si02 B~+ Total dissolved solids