The assessment of organic matter Young's Modulus Distribution with depositional environment and maturity
| Autor: | C. van der Land, T. D. Fender, David Jones, Christopher H. Vane, S. P. Graham, Mohamed Rouainia, Thomas Wagner |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Maturity (geology) Atomic force microscopy business.industry Distribution (economics) Soil science Young's modulus Sedimentary depositional environment symbols.namesake Geophysics Geomechanics chemistry Space and Planetary Science Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) symbols Organic matter business Oil shale Geology |
| DOI: | 10.1029/2020JB020435 |
| Popis: | Quantification of risk to seal integrity in CCS, or gas extraction from hydraulic fracturing, is directly affected by the accessibility of organic pores within organic rich mudrocks. Knowledge of the host organic matter's mechanical properties, which are influenced by depositional environment and thermal maturity, are required to reduce operational risk. In this study we address the effect of both depositional environment and maturity on organic matter Young's modulus by means of Atomic Force Microscopy Quantitative ImagingTM, which is a nondestructive technique capable of nanomechanical measurements. Shales from varying marine depositional environments covering kerogen Types II (Barnett), IIS (Tarfaya), and II/III (Eagle Ford/ Bowland) are analyzed to capture variance in organic matter. The findings show organic matter has a Young's modulus ranging between 0.1 and 24 GPa. These marine shales have a bimodal distribution of Young's modulus to some degree, with peaks at between 3–10 and 19–24 GPa. These shales exhibit a trend with maturity, whereby Young's modulus values of |
| Databáze: | OpenAIRE |
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