Effects of hydrous pyrolysis on biomarker thermal maturity parameters: Monterey Phosphatic and Siliceous members

Peters, Kenneth E.; Moldowan, J. Michael; Sundararaman, Padmanabhan

doi:10.1016/0146-6380(90)90003-i

Cited by 290 publications

(81 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is important to note that a number of studies concerned with mechanistic aspects of thermally-induced changes in relative abundances of the 20R and 20S C29 ααα-sterane epimers (e.g., Peters et al, 1990;Abbott et al, 1990) have suggested that, in contrast to previously held views (e.g., Mackenzie et al, 1980), interconversion and equilibration between the two diastereomers is unlikely. According to Abbott et al (1990), observed maturational trends in this ratio can be better explained as the net result of a complex set of processes involving different rates of release/formation and destruction for the 20R and 20S compounds.…”

Section: S/20r Diastereomer Ratiosmentioning

confidence: 63%

“…Moldowan et al (1992), for example, reported the presence of equilibrated 22R/22S mixtures in very immature carbonate rocks from the Adriatic Basin. Interestingly, laboratory simulations of natural thermal evolution have indicated that free homohopanes in bitumens isomerize more rapidly than their kerogen-bound counterparts (Peters et al, 1990). Many extracts from shallow sediments deposited under hypersaline conditions show mature hopane signatures (ten Haven et aI., 1986), suggesting the existence of unusual diagenetic pathways in such systems.…”

Section: R 22smentioning

confidence: 99%

See 1 more Smart Citation

The Advanced Chemistry Basins Project

Goddard¹,

Meulbroek²,

Tang³

et al. 2004

View full text Add to dashboard Cite

In the next decades, oil exploration by majors and independents will increasingly be in remote, inaccessible areas, or in areas where there has been extensive shallow exploration but deeper exploration potential may remain; areas where the collection of data is expensive, difficult, or even impossible, and where the most efficient use of existing data can drive the economics of the target. The ability to read hydrocarbon chemistry in terms of subsurface migration processes by relating it to the evolution of the basin and fluid migration is perhaps the single technological capability that could most improve our ability to explore effectively because it would allow us to use a vast store of existing or easily collected chemical data to determine the major migration pathways in a basin and to determine if there is deep exploration potential. To this end a the DOE funded a joint effort between California Institute of Technology, Cornell University, and GeoGroup Inc. to assemble a representative set of maturity and maturation kinetic models and develop an advanced basin model able to predict the chemistry of hydrocarbons in a basin from this input data. The four year project is now completed and has produced set of public domain maturity indicator and maturation kinetic data set, an oil chemistry and flash calculation tool operable under Excel, and a user friendly, graphically intuitive basin model that uses this data and flash tool, operates on a PC, and simulates hydrocarbon generation and migration and the chemical changes that can occur during migration (such as phase separation and gas washing).The DOE Advanced Chemistry Basin Model includes a number of new methods that represent advances over current technology. The model is built around the concept of handling arbitrarily detailed chemical composition of fluids in a robust finite-element 2-D grid. There are three themes on which the model focuses: chemical kinetic and equilibrium reaction parameters, chemical phase equilibrium, and physical flow through porous media. The chemical kinetic scheme includes thermal indicators including vitrinite, sterane ratios, hopane ratios, and diamonoids; and a user-modifyable reaction network for primary and secondary maturation. Also provided is a database of typespecific kerogen maturation schemes. The phase equilibrium scheme includes modules for primary and secondary migration, multi-phase equilibrium (flash) calculations, and viscosity predictions. Abstract

show abstract

Section: S/20r Diastereomer Ratiosmentioning

confidence: 63%

Section: R 22smentioning

confidence: 99%

The Advanced Chemistry Basins Project

Goddard¹,

Meulbroek²,

Tang³

et al. 2004

View full text Add to dashboard Cite

show abstract

“…Many previous studies have illustrated this phenomenon for mature or over-mature samples (Love et al, 1996;Lockhart et al, 2008;Murray et al, 1998;Peters et al, 1990). In fact, the maturity of the bound biomarkers has been artificially elevated by the high temperature (520°C) of the HyPy technique.…”

Section: Geological Meaning For Bound Biomarkersmentioning

confidence: 99%

Geochemical Characterization of Released Bound Biomarkers by Catalytic Hydropyrolysis of Ordovician Source Rock from Tarim Basin, China

Wang

Lü

Jiang

et al. 2013

Energy Exploration & Exploitation

View full text Add to dashboard Cite

The Salgan and Yingan shales in the Keping area are Middle and Upper Ordovician hydrocarbon source rocks in the Tarim Basin, north-western China. Complete distribution of n-alkanes and isoprenoids can be obtained from the source rocks, while general terpanes (m/z 191) and steranes (m/z 217) were totally absent. Therefore, kerogens in these rocks were further treated by catalytic hydropyrolysis (HyPy) to obtain more biomarker information. As an efficient technique, Hypy successfully released bound terpanes and steranes. Furthermore, some maturity parameters were calculated. Based on the values of these parameters, the effective R o value of bound biomarkers in Salgan and Yingan shale was deduced to be in the range of 0.7-0.75% and 0.65-0.73%, respectively. Considering the artificial heating effect in HyPy technique, relatively lower values would be expected to the maturity of the bound biomarkers. Therefore, the incorporation of bound biomarkers into kerogen should occur even earlier, before the R o value reached 0.65%-that is, prior to oil generation window. For both the Salgan and Yingan shales, neither high maturity nor magmatic hydrothermal effects during the Permian were responsible for the loss of free biomarkers. The simplex organic matter input dominated by acritarchs might be the possible reason for the absence of free biomarkers.

show abstract

“…The deviation of the ratio from the equilibrium to lower values is attributed to a high heating rate during maturation (Lu et al 1989;Abbott et al 1990;Peters et al 1990;Raymond and Murchison 1992;Bishop and Abbott 1993;Requejo Fig. 5.…”

Section: Hopanoidsmentioning

confidence: 99%

Biomarker Distributions as Maturity Indicators in Coals, Coaly Shales, and Shales From Taiwan

Shen¹,

Huang²

2007

Terr. Atmos. Ocean. Sci.

View full text Add to dashboard Cite

ABSTRACT1 EDRI, Chinese Petroleum Corp., Miaoli, Taiwan, ROC 2 Department of Geosciences, National Taiwan University, Taipei, Taiwan, ROC * Corresponding author address: Dr. Jun-Chin Shen, EDRI, Chinese Petroleum Corp., Miaoli, Taiwan, ROC; E-mail: 048470@cpc.com.tw doi: 10.3319/ TAO.2007.18.4.739(TT) The distribution of hopanoids and alkanes in bitumen extracts of coals, coaly shales, and shales from northwestern Taiwan has been measured to assess the maturity of potential petroleum source rocks in the studied area. The C 31 homohopane isomers of the studied coals and coaly shales attain equilibrium at maturity corresponding to 0.6% Ro measured in coals or 0.65% Ro in adjacent shales. A proposed parameter using hopanoid ratios reveals a more consistent trend and approaches a steady value at maturity similar to the C 31 homohopane isomer ratio. The results show that the onset of the main phase of petroleum generation in northwestern Taiwan takes place at maturity corresponding to VR of 0.6% Ro measured in coals or coaly shales and probably higher VR in shales. The distribution of pristane, phytane n-C 17 and n-C 18 confirms the validity of the conventional maturity indicators if the samples are from the same source, but shows depositionalor organic-source controls. The source influence on the phytane/n-C 18 ratio appears to be larger than that on the pristane/n-C 17 ratio. The phytane/n-C 18 ratio is also less sensitive to maturity than that of the pristane/n-C 17 ratio. The pristane/phytane ratios in the studied coals and coaly shales, in contrast to the pristane/n-C 17 ratio, continue to decrease to maturities beyond the oil window up to 1.5% Ro and therefore may be applicable to high maturity sources.

show abstract

Effects of hydrous pyrolysis on biomarker thermal maturity parameters: Monterey Phosphatic and Siliceous members

Cited by 290 publications

References 30 publications

The Advanced Chemistry Basins Project

The Advanced Chemistry Basins Project

Geochemical Characterization of Released Bound Biomarkers by Catalytic Hydropyrolysis of Ordovician Source Rock from Tarim Basin, China

Biomarker Distributions as Maturity Indicators in Coals, Coaly Shales, and Shales From Taiwan

Contact Info

Product

Resources

About