Effect of geological reaction time on transformation temperature in zeolitic diagenesis
Zeolites found in the Neogene sediments in northern Japan show a vertical zonal arrangement. The zeolite zones are formed primarily by maximum temperature during burial diagenesis. The effect of geological reaction time on transformation temperature to progress in the zeolitization was studied at eight deeply drilled wells in oil-producing areas of Japan. The strata in these wells have continuously deposited under marine environments until recent time and reach geologically maximum burial depth. The geological reaction time at the upper limit of each zeolite zone was estimated from the sedimentation rate on the basis of micropaleontological datum levels and corresponds to the burial time during which the strata have subsided. The transformation temperature of zeolites was determined from the present subsurface temperature, which was obtained by the correction of bottom-hole temperature measured during a wireline log run. The transformation temperature decreases gradually with increasing geological reaction time. The transformation temperatures of silicic glass to clinoptilolite and clinoptilolite to analcime are 58 and 105/sup 0/C at 1.8 mega-annum (Ma) and 50 and 92/sup 0/C at 5 Ma. respectively. The temperature-time relation on the zeolitization in marine sediments is similar to that in thermal maturation of organic matter in sediments.
- Research Organization:
- Mitsui Oil Exploration Co., Ltd., Tokyo
- OSTI ID:
- 5649925
- Journal Information:
- Energy Sources (N.Y.); (United States), Vol. 8:2
- Country of Publication:
- United States
- Language:
- English
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JAPAN
PETROLEUM DEPOSITS
GEOCHEMICAL SURVEYS
PHASE TRANSFORMATIONS
TRANSITION TEMPERATURE
ZEOLITES
CATAGENESIS
ANALCIME
CLINOPTILOLITE
DEPTH
GLASS
GROUND SUBSIDENCE
MARINE SURVEYS
MATURATION
MEDIUM TEMPERATURE
OIL WELLS
PALEONTOLOGY
SEDIMENTATION
SEDIMENTS
TEMPERATURE EFFECTS
TEMPERATURE MEASUREMENT
TERTIARY PERIOD
TIME DEPENDENCE
WELL LOGGING
WELL TEMPERATURE
ASIA
CENOZOIC ERA
DIMENSIONS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERAL RESOURCES
MINERALS
PHYSICAL PROPERTIES
RESERVOIR TEMPERATURE
RESOURCES
SILICATE MINERALS
SURVEYS
THERMODYNAMIC PROPERTIES
WELLS
020200* - Petroleum- Reserves
Geology
& Exploration