Page 68 - Origin and Prediction of Abnormal Formation Pressures

NO-UONTMORILLONITE ABOUT LEVEL (USUALLY FEET) 10.000 TO 9,000 hydrocarbons from mudrocks.

HYDROCARBONS MADE OR N THIS BUT NO LAYER to release of

MOST FORYEO AVAILABLE ZONE MIXED

1-1
KAOLINITE

AND
ILLlTE ILLITE deposited in marine environments and its probable relation
my

CURVE (Modified after Powers, 1967, fig. 3, p. 1245; in Rieke and Chilingarian, 1974, fig. 58, p. 11 1. Courtesy of Am. Assoc. Pet. Geol.)

WATER-ESCAPE MONTMORILLONITE various clays when

mi

of
1-1

OF POSITION CANNOT AS TO ALTERS IS BETWEEN DESOReEO FREE AS
SEVERAL MONOLAYERS UYOROGEN IN HELD MONTMORlLLONlTE IN SQUEEZED BE COMPACTION MONTMORlLLONlTE WATER ILLITE. HYDROGEN LAYERS IS UNIT ANOTRANSFERRED TO WATER POSITIONS. HYDROCARBONS
REMARKS BONDED WATER INTERLAYER WT BY PRESSURES. THAT BONDED INTERPARTICLE OVERBURDEN Fig. 2-17, Compaction history