Diagenetic Trends of Synthetic Reservoir Sandstone Properties Assessed by Digital Rock Physics
| العنوان: | Diagenetic Trends of Synthetic Reservoir Sandstone Properties Assessed by Digital Rock Physics |
|---|---|
| المؤلفون: | Michael Kühn, Maria Wetzel, Thomas Kempka |
| المصدر: | Minerals, Vol 11, Iss 151, p 151 (2021) Minerals Volume 11 Issue 2 |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | lcsh:Mineralogy, lcsh:QE351-399.2, 010504 meteorology & atmospheric sciences, Petrophysics, micro-CT scan, Mineralogy, Geology, pore-scale, cementation, 010502 geochemistry & geophysics, Geotechnical Engineering and Engineering Geology, Cementation (geology), 01 natural sciences, Diagenesis, Clogging, permeability-porosity relationship, Permeability (earth sciences), numerical simulation, elastic rock properties, Porosity, Quartz, Dissolution, digital core reconstruction, 0105 earth and related environmental sciences |
| الوصف: | Quantifying interactions and dependencies among geometric, hydraulic and mechanical properties of reservoir sandstones is of particular importance for the exploration and utilisation of the geological subsurface and can be assessed by synthetic sandstones comprising the microstructural complexity of natural rocks. In the present study, three highly resolved samples of the Fontainebleau, Berea and Bentheim sandstones are generated by means of a process-based approach, which combines the gravity-driven deposition of irregularly shaped grains and their diagenetic cementation by three different schemes. The resulting evolution in porosity, permeability and rock stiffness is examined and compared to the respective micro-computer tomographic (micro-CT) scans. The grain contact-preferential scheme implies a progressive clogging of small throats and consequently produces considerably less connected and stiffer samples than the two other schemes. By contrast, uniform quartz overgrowth continuously alters the pore space and leads to the lowest elastic properties. The proposed stress-dependent cementation scheme combines both approaches of contact-cement and quartz overgrowth, resulting in granulometric, hydraulic and elastic properties equivalent to those of the respective micro-CT scans, where bulk moduli slightly deviate by 0.8%, 4.9% and 2.5% for the Fontainebleau, Berea and Bentheim sandstone, respectively. The synthetic samples can be further altered to examine the impact of mineral dissolution or precipitation as well as fracturing on various petrophysical correlations, which is of particular relevance for numerous aspects of a sustainable subsurface utilisation. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1730b519ef0e85bbe6834f9476d4eedf https://www.mdpi.com/2075-163X/11/2/151 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....1730b519ef0e85bbe6834f9476d4eedf |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |