Microtomography of Imbibition Phenomena and Trapping Mechanism
| العنوان: | Microtomography of Imbibition Phenomena and Trapping Mechanism |
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| المؤلفون: | Arief Setiawan, Tetsuya Suekane, Hidenori Nomura |
| المصدر: | Transport in Porous Media. 92:243-257 |
| بيانات النشر: | Springer Science and Business Media LLC, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Materials science, Buoyancy, Capillary action, General Chemical Engineering, Mechanics, engineering.material, Catalysis, Phase (matter), engineering, Imbibition, Geotechnical engineering, Wetting, Porosity, Porous medium, Displacement (fluid) |
| الوصف: | Water imbibition during the waterflooding process of oil production only sweeps part of the oil present. After water disrupts the oil continuity, most oil blobs are trapped in porous rock by capillary forces. Developing an efficient waterflooding scheme is a difficult task; therefore, an understanding of the oil trapping mechanism in porous rock is necessary from a microscopic viewpoint. The development of microfocused X-ray CT scanner technology enables the three-dimensional visualization of multiphase phenomena in a pore-scale. We scanned packed glass beads filled with a nonwetting phase (NWP) and injected wetting phase (WP) in upward and downward injections to determine the microscopic mechanism of immiscible displacement in porous media and the effects of buoyancy forces. We observed the imbibition phenomena for small capillary numbers to understand the spontaneous imbibition mechanism in oil recovery. This study is one of the first attempts to use a microfocused X-ray CT scanner for observing the imbibition and trapping mechanisms. The trapping mechanism in spontaneous imbibition is determined by the pore configuration causing imbibition speed differences in each channel; these differences can disrupt the oil continuity. Gravity plays an important role in spontaneous imbibition. In upward injection, the WP flows evenly and oil is trapped in single or small clusters of pores. In downward injection, the fingering phenomena determine the amount of trapped oil, which is usually in a network scale. Water breakthrough causes dramatic decrease in the oil extraction rate, resulting in lower oil production efficiency. |
| تدمد: | 1573-1634 0169-3913 |
| DOI: | 10.1007/s11242-011-9899-2 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::17e3af156bad5ca7321a23872e799377 https://doi.org/10.1007/s11242-011-9899-2 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........17e3af156bad5ca7321a23872e799377 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15731634 01693913 |
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| DOI: | 10.1007/s11242-011-9899-2 |