Brian Horsfield - Academia.edu (original) (raw)

Uploads

Papers by Brian Horsfield

Social Science Research Network, 2023

Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, 2018

International Journal of Coal Geology, Mar 1, 2016

Two sets of lacustrine source rocks in the Junggar Basin and Ordos Basin have been analysed by or... more Two sets of lacustrine source rocks in the Junggar Basin and Ordos Basin have been analysed by organic geochemical approach and organic petrographic technique. One of these source rocks, the Junggar shales (Lucaogou Formation and Hongyanchi Formation), was deposited in a hydrologically closed, brackish lake under a sub-humid climate in higher latitude (39°-43°N), and consisted of organic-rich profundal lake shales (Lucaogou Formation) and lean fluvial-lacustrine lake margin mudstones. The other one, the Chang 7 Shale, was deposited in a hydrologically open, freshwater lake under a humid climate in a 31°N palaeolatitude, and was characterized by high concentration of alginite-rich organic matter. The profundal Lucaogou Shale and Chang 7-3 Shale possess abundant total organic carbon, high generative potential S 2 and high Hydrogen Indices, which rank as the best prolific source rocks in both basins followed by Chang 7-1 Shale. Hongyanchi Formation and Chang 7-2 are much leaner than their counterparts, and contain relatively small portion of alginite but more terrigenous macerals. This nature of organic matter makes them less prolific and becoming gas-prone potential. These differences in petroleum potential mirror depositional environment changes in source rocks formation. Potential source rocks in both basins have the potential for generating high-wax oil but the brackish system clearly contains more PNA oil. The kerogen structures revealed by pyrolysis gas chromatography allowexplaining this trend. The Lucaogou, Chang 7-3 and Chang 7-1 shales enriching in long and moderate alkyl chains share a nature of high wax oil generation-trend. In contrast, the Hongyanchi and Chang 7-2 shales appears to be dominated by short to moderated chain length distribution and higher overall aromaticity to generate more PNA oil, even gas and condensate. Thermal liability was shown to be linked to kerogen structure, in particular the presence of alicyclic and oxygencontaining moieties, and these in turn are correlate with total organic carbon content.

Evolution of organic matter in sedimentary basins over geological times includes formation of ker... more Evolution of organic matter in sedimentary basins over geological times includes formation of kerogen, production of hydrocarbons, expulsion, migration, accumulation and possible transformation within the reservoir. Inorganic components, e.g. mineralogical composition, could play an important role in this evolution of organic matter (Murgich and Jesús Rodríguez, 1998). Jones et al. (1994) emphasized similarities in petroleum generation for shale and carbonate source rocks but stressed possible differences in migration. Carbonate source rocks tend to be more brittle, heterogeneous and tighter than clay rich source rocks, which makes them more prone to fracture and emit hydrocarbons more effectively. As defined by Jarvie (2012), unconventional resource systems include not only organic rich rocks which can generate and store petroleum itself but also juxtaposed organic lean intervals where generated petroleum can migrate into. Those juxtaposed organic lean units also may have different lithofacies than the organic rich units. Improved oil quality could be found in juxtaposed organic lean units, because short distance secondary migration leaves more heavy and polar compounds in the source.

Analyses results from FT-IR as well as Curie Point-Pyrolysis GC-MS for the Manucript: Organic geo... more Analyses results from FT-IR as well as Curie Point-Pyrolysis GC-MS for the Manucript: Organic geochemistry and petrology of Posidonia Shale (Lower Toarcian, Western Europe) – the evolution from immature oil-prone to overmature dry gas-producing kerogen; by Stock et al.

Zenodo (CERN European Organization for Nuclear Research), Mar 12, 2012

AGUFM, Dec 1, 2008

ABSTRACT

My 4-year study at RWTH Aachen University not only improved my knowledge of the understanding of ... more My 4-year study at RWTH Aachen University not only improved my knowledge of the understanding of petroleum generation experimentally and theoretically, but also provides me the opportunity to know many colleagues bringing much help and fun. Firstly, I would like to express my thanks to Prof. Dr. Ralf Littke and Dr. Bernhard M. Krooss for the comprehensive supervision, kind-hearted support and impressive discussion which guided me through the difficulties, inspires me most of the exciting results in this thesis, and shapes my thinking and academic experience. I want to thank China Scholarship Council (CSC) for the financial support covering my life in Aachen. Furthermore, I am very thankful to Prof. Dr. Brian Horsfield for spending the time reading this thesis as a co-examiner. Special thanks go to Philipp Weniger, who taught me valuable experimental skills and initiated fruitful discussions deepening my understanding of gas generation significantly. His willingness to share the knowledge with others and his continuous support are much appreciated. Christian Ostertag-Henning from Bundesanstalt für Geowissenschaften und Rohstoffe in Hannover (BGR) is greatly acknowledged, who taught me more experimental skills and helped me a lot. I want to express my gratitude to Nicolaj Mahlstedt from Geoforschungszentrum Potsdam (GFZ), for his valuable and constructive comments on my research.

Journal of Natural Gas Science and Engineering, Sep 1, 2022

International Journal of Hydrogen Energy, May 1, 2022

EGU General Assembly Conference Abstracts, Apr 1, 2012

ABSTRACT

Proceedings, Oct 19, 2014

The prediction of gas-oil ratios, phase state and petroleum quality ahead of drilling is a proven... more The prediction of gas-oil ratios, phase state and petroleum quality ahead of drilling is a proven element of exploration in both conventional and unconventional petroleum systems. Here we show how our compositional kinetic approach (PhaseKinetics) has been successfully applied in the Jean d'Arc Basin offshore Canada, as well as in the Bakken Formation of the Williston Basin, USA. We demonstrate how cumulative and instantaneous fluid descriptions can be developed and applied in petroleum system modeling.

Proceedings, May 29, 1995

The stability of crude oil in deep hot reservoirs has been analysed using laboratory heating expe... more The stability of crude oil in deep hot reservoirs has been analysed using laboratory heating experiments and field studies in a three phase research project.

Social Science Research Network, 2023

Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, 2018

International Journal of Coal Geology, Mar 1, 2016

Two sets of lacustrine source rocks in the Junggar Basin and Ordos Basin have been analysed by or... more Two sets of lacustrine source rocks in the Junggar Basin and Ordos Basin have been analysed by organic geochemical approach and organic petrographic technique. One of these source rocks, the Junggar shales (Lucaogou Formation and Hongyanchi Formation), was deposited in a hydrologically closed, brackish lake under a sub-humid climate in higher latitude (39°-43°N), and consisted of organic-rich profundal lake shales (Lucaogou Formation) and lean fluvial-lacustrine lake margin mudstones. The other one, the Chang 7 Shale, was deposited in a hydrologically open, freshwater lake under a humid climate in a 31°N palaeolatitude, and was characterized by high concentration of alginite-rich organic matter. The profundal Lucaogou Shale and Chang 7-3 Shale possess abundant total organic carbon, high generative potential S 2 and high Hydrogen Indices, which rank as the best prolific source rocks in both basins followed by Chang 7-1 Shale. Hongyanchi Formation and Chang 7-2 are much leaner than their counterparts, and contain relatively small portion of alginite but more terrigenous macerals. This nature of organic matter makes them less prolific and becoming gas-prone potential. These differences in petroleum potential mirror depositional environment changes in source rocks formation. Potential source rocks in both basins have the potential for generating high-wax oil but the brackish system clearly contains more PNA oil. The kerogen structures revealed by pyrolysis gas chromatography allowexplaining this trend. The Lucaogou, Chang 7-3 and Chang 7-1 shales enriching in long and moderate alkyl chains share a nature of high wax oil generation-trend. In contrast, the Hongyanchi and Chang 7-2 shales appears to be dominated by short to moderated chain length distribution and higher overall aromaticity to generate more PNA oil, even gas and condensate. Thermal liability was shown to be linked to kerogen structure, in particular the presence of alicyclic and oxygencontaining moieties, and these in turn are correlate with total organic carbon content.

Evolution of organic matter in sedimentary basins over geological times includes formation of ker... more Evolution of organic matter in sedimentary basins over geological times includes formation of kerogen, production of hydrocarbons, expulsion, migration, accumulation and possible transformation within the reservoir. Inorganic components, e.g. mineralogical composition, could play an important role in this evolution of organic matter (Murgich and Jesús Rodríguez, 1998). Jones et al. (1994) emphasized similarities in petroleum generation for shale and carbonate source rocks but stressed possible differences in migration. Carbonate source rocks tend to be more brittle, heterogeneous and tighter than clay rich source rocks, which makes them more prone to fracture and emit hydrocarbons more effectively. As defined by Jarvie (2012), unconventional resource systems include not only organic rich rocks which can generate and store petroleum itself but also juxtaposed organic lean intervals where generated petroleum can migrate into. Those juxtaposed organic lean units also may have different lithofacies than the organic rich units. Improved oil quality could be found in juxtaposed organic lean units, because short distance secondary migration leaves more heavy and polar compounds in the source.

Analyses results from FT-IR as well as Curie Point-Pyrolysis GC-MS for the Manucript: Organic geo... more Analyses results from FT-IR as well as Curie Point-Pyrolysis GC-MS for the Manucript: Organic geochemistry and petrology of Posidonia Shale (Lower Toarcian, Western Europe) – the evolution from immature oil-prone to overmature dry gas-producing kerogen; by Stock et al.

Zenodo (CERN European Organization for Nuclear Research), Mar 12, 2012

AGUFM, Dec 1, 2008

ABSTRACT

My 4-year study at RWTH Aachen University not only improved my knowledge of the understanding of ... more My 4-year study at RWTH Aachen University not only improved my knowledge of the understanding of petroleum generation experimentally and theoretically, but also provides me the opportunity to know many colleagues bringing much help and fun. Firstly, I would like to express my thanks to Prof. Dr. Ralf Littke and Dr. Bernhard M. Krooss for the comprehensive supervision, kind-hearted support and impressive discussion which guided me through the difficulties, inspires me most of the exciting results in this thesis, and shapes my thinking and academic experience. I want to thank China Scholarship Council (CSC) for the financial support covering my life in Aachen. Furthermore, I am very thankful to Prof. Dr. Brian Horsfield for spending the time reading this thesis as a co-examiner. Special thanks go to Philipp Weniger, who taught me valuable experimental skills and initiated fruitful discussions deepening my understanding of gas generation significantly. His willingness to share the knowledge with others and his continuous support are much appreciated. Christian Ostertag-Henning from Bundesanstalt für Geowissenschaften und Rohstoffe in Hannover (BGR) is greatly acknowledged, who taught me more experimental skills and helped me a lot. I want to express my gratitude to Nicolaj Mahlstedt from Geoforschungszentrum Potsdam (GFZ), for his valuable and constructive comments on my research.

Journal of Natural Gas Science and Engineering, Sep 1, 2022

International Journal of Hydrogen Energy, May 1, 2022

EGU General Assembly Conference Abstracts, Apr 1, 2012

ABSTRACT

Proceedings, Oct 19, 2014

The prediction of gas-oil ratios, phase state and petroleum quality ahead of drilling is a proven... more The prediction of gas-oil ratios, phase state and petroleum quality ahead of drilling is a proven element of exploration in both conventional and unconventional petroleum systems. Here we show how our compositional kinetic approach (PhaseKinetics) has been successfully applied in the Jean d'Arc Basin offshore Canada, as well as in the Bakken Formation of the Williston Basin, USA. We demonstrate how cumulative and instantaneous fluid descriptions can be developed and applied in petroleum system modeling.

Proceedings, May 29, 1995

The stability of crude oil in deep hot reservoirs has been analysed using laboratory heating expe... more The stability of crude oil in deep hot reservoirs has been analysed using laboratory heating experiments and field studies in a three phase research project.