Towards an understanding of the role of clay minerals in crude oil formation, migration and accumulation

Wu, Lin; Zhou, Chun Hui; Keeling, John; Tong, Dong Shen; Yu, Wei

doi:10.1016/j.earscirev.2012.10.001

Cited by 125 publications

(48 citation statements)

References 112 publications

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“…Especially for macroscopic compression fossils, the processes responsible for preserving morphological organic carbon are unlikely to be the same as those acting on total organic carbon (TOC). In the present experiments, for example, there is no particular reason to assume that the montmorillonite treatments preserved less TOC than did kaolinite-only that macromolecular structures were more readily broken down into smaller migration-prone compounds (with a corresponding loss of morphology but enhanced likelihood of mineral adsorption and amorphous recondensation [Lützow et al 2006;Wu et al 2012]). The lack of color change in the kaolinite systems suggests that significantly less structural material was degraded and dispersed at the outset.…”

Section: Taphonomic Pathwaysmentioning

confidence: 83%

“…Such taphonomic realignment is hardly surprising given the well-documented influence of mineralogy on the preservation of sedimentary organic carbon in general (Theng 1979;Ransom et al 1998;Lützow et al 2006;Ziervogel et al 2007;Wu et al 2012) and, indeed, the preferential occurrence of carbonaceous compression fossils and microfossils in siliciclastic (vs. carbonate-rich) mudstones. Curiously, however, it was the kaolinite system that induced the most pronounced positive effects on carcass preservation, despite the modest physicochemical properties of this 1:1 layer clay.…”

Section: Sediment Effects On the Preservation Of Carbonaceous Fossilsmentioning

confidence: 99%

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Sediment Effects on the Preservation of Burgess Shale-Type Compression Fossils

Wilson

Butterfield

2014

PALAIOS

106

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Experimental burial of polychaete (Nereis) and crustacean (Crangon) carcasses in kaolinite, calcite, quartz, and montmorillonite demonstrates a marked effect of sediment mineralogy on the stabilization of nonbiomineralized integuments, the first step in producing carbonaceous compression fossils and Burgess Shale-type (BST) preservation. The greatest positive effect was with Nereis buried in kaolinite, and the greatest negative effect was with Nereis buried in montmorillonite, a morphological trend paralleled by levels of preserved protein. Similar but more attenuated effects were observed with Crangon. The complex interplay of original histology and sediment mineralogy controls system pH, oxygen content, and major ion concentrations, all of which are likely to feed back on the preservation potential of particular substrates in particular environments. The particular susceptibility of Nereis to both diagenetically enhanced preservation and diagenetically enhanced decomposition most likely derives from the relative lability of its collagenous cuticle vs. the inherently more recalcitrant cuticle of Crangon. We propose a mechanism of secondary, sediment-induced taphonomic tanning to account for instances of enhanced preservation. In light of the marked effects of sediment mineralogy on fossilization, the Cambrian to Early Ordovician taphonomic window for BST preservation is potentially related to a coincident interval of glauconite-prone seas.

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Section: Taphonomic Pathwaysmentioning

confidence: 83%

Section: Sediment Effects On the Preservation Of Carbonaceous Fossilsmentioning

confidence: 99%

Sediment Effects on the Preservation of Burgess Shale-Type Compression Fossils

Wilson

Butterfield

2014

PALAIOS

106

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“…Hence, humans are expecting an increasing fraction of fuels and chemicals from renewable bioresources (1,8,419). The transesterification of triglycerides with methanol has been successfully developed for the production of biodiesel.…”

Section: Summary and Future Prospectsmentioning

confidence: 99%

Recent Advances in Catalytic Conversion of Glycerol

Zhou¹,

Zhao²,

Tong³

et al. 2013

Catalysis Reviews

Self Cite

177

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The article underlines and discusses the state-of-the-art accomplishments in the catalytic conversion of glycerol (1,2,3-propanetriol) to fuels and value-added chemicals in the past five years (2008)(2009)(2010)(2011)(2012). The reactions include steam reforming, aqueous-phase reforming, hydrogenolysis, oxidation, dehydration, esterification, etherification, carboxylation, acetalization, and chlorination. Typical products are hydrogen, propanediols, dihydroxyacetone, glyceric acid, acrolein, glyceride, polyglycerol, glycerol carbonate, acetals, ketals, and epichlorohydrine. Recent studies on the catalysts, reaction conditions, and possible pathways are primarily discussed. They indicate that major breakthroughs are achieved by the use of multifunctional catalysts, process intensification and integrated reactions. Literature survey suggests that future work on the catalytic conversion of glycerol for commercial goals particularly requires new catalysts, innovative reactor engineering, and close multidisciplinary partnership.

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“…Thus swelling clays shown in multiple studies to be the major catalyst (e.g. Wu et al, 2012). The relationship between the clay and the organic phase during maturation is further emphasized by the study of Rahman et al (2017) where a greater contact between the two phases resulted in greater hydrocarbon production through pyrolysis.…”

Section: Organic Matter Preparation and Maturationmentioning

confidence: 99%

Impact of artificially matured organic matter on the dielectric and elastic properties of compacted shales

Cauchefert

Josh

Esteban

et al. 2018

ASEG Extended Abstracts

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SUMMARYUnconventional gas shale resources recently became a standard in the American oil and gas industry and are studied throughout the world. However, gas shales are still poorly characterised with respect to other reservoir rock types. The different parameters of organic matter (OM) in organic shales needs to be better constrained in all theircomplexity and variability. This study focuses on the influence of OM maturity on the dielectric and elastic response of shale using a hydrous pyrolysis process to increase their maturity. We then incorporated the OM in a shale-like mineral matrix that was artificially compacted under control. Elastic properties and their anisotropy were measured during compaction while dielectric measurements were acquired post-compaction. The results showed that OM affects the onset of the liquid/plastic transition of compacting sediment. The immature OM lessens the development of P-wave anisotropy. On the other end, mature OM strongly decreases the imaginary dielectric permittivity at low frequencies while it increases electrical conductivity.

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Towards an understanding of the role of clay minerals in crude oil formation, migration and accumulation

Cited by 125 publications

References 112 publications

Sediment Effects on the Preservation of Burgess Shale-Type Compression Fossils

Sediment Effects on the Preservation of Burgess Shale-Type Compression Fossils

Recent Advances in Catalytic Conversion of Glycerol

Impact of artificially matured organic matter on the dielectric and elastic properties of compacted shales

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