Principal phase of oil formation

Burial Diagenesis of Magnetic Minerals: New Insights from the Grès d’Annot Transect (SE France)

“…Therefore, the burial temperature at Gias Vallonetto is suggested to be lower than 350 °C, i.e., lower than the pyrite breakdown temperature. This is consistent with the burial temperature derived from vitrinite reflectance data (Ro < 7.5%) when using the Vassoyevitch et al [40] calibration curve. It is worth reminding that this calibration curve was chosen because of its consistency with apatite fission track data [33].…”

“…The chemical kinetic model proposed by Sweeney and Burnham [70] cannot be used, because it is valid on a range of Ro between 0.3% and 4.5%. Barker and Pawlewicz [71] proposed an empirical calibration curve just as Vassoyevitch et al [40]. When using this calibration, a burial temperature about 30-40 °C higher than that given by the Vassoyevitch et al [40] calibration is estimated, i.e., also coherent with a burial temperature < 350 °C, suggested by the observation of the magnetic assemblage (magnetite and pyrrhotite).…”

“…NE of Grand Coyer, the Ro values first show an abrupt increase up to 2.0%-2.5% in the Estrop and Colmars areas, then a more progressive trend in the northeastern area, with values of ~4% in La Moutière to more than 6% at Gias Vallonetto. According to the Vassoyevitch et al [40] calibration, these Ro values correspond to temperatures increasing from ~45 °C at Rouaine to 75 °C in the Grand Coyer area, to ~160-180 °C in the Estrop and Colmars areas, to ~230-240 °C at La Moutière and ~250-270 °C at Gias Vallonetto [34][35][36]. Sampling sites and thermal data available for the study area (modified from Labaume et al [33]).…”

Petroleum-Generating Potential and Thermal History of DSDP Leg 38 Sediments

“…Vitrinite reflectance provides a measure of organic metamorphism which is applicable over a wide range of coal rank, stage of catagenesis (Vassoyevich et al, 1970), or level of organic metamorphism (LOM; Hood and Castano, 1974;Hood et al, 1975).…”

Application of Microbes for Recovery of Residual Crude Petroleum

“…Alkaline-Surfactant-Polymer flooding [29,30] is relatively a new method and is being evaluated by performing various laboratory investigations and field tests. The method utilizes mostly three chemical formulationspolymer, alkali and surfactant solutions.…”