| Автор | H. T. Davis |
| Дата выпуска | 1989-04-01 |
| dc.description | On the basis of electron microscopy studies, Katz and Thompson have concluded that the porosity of some natural sandstones has a fractal structure. In this letter we show that the recent capillary pressure measurements of Melrose also imply a fractal structure. Melrose measured the capillary pressure P<sub>c</sub> of Berea sandstone at low saturations S<sub>w</sub> of water. His data cannot be rationalized in terms of thin films and nonfractal pendular structures. Instead, the data obey the scaling law S<sub>w</sub> = AP<sub>c</sub><sup>D-3</sup> proposed by de Gennes for the partial filling of a fractal structure by a wetting fluid. The fractal dimension D = 2.55 deduced from the capillary pressure data is consistent with the range 2.57 to 2.87 found by Katz and Thompson for the different sandstones they examined. The capillary pressure curve at low saturation of wetting phase thus provides an alternative means of measuring the fractal dimension of the pore space. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | On the Fractal Character of the Porosity of Natural Sandstone |
| Тип | lett |
| DOI | 10.1209/0295-5075/8/7/008 |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 8 |
| Первая страница | 629 |
| Последняя страница | 632 |
| Аффилиация | H. T. Davis; Laboratoire d'Hydrodynamique et Mécanique Physique, Ecole Supérieure de Physique et Chimie Industrielles, U.A. CNRS 857, 10 rue Vauquelin, 75231 Paris Cedex 05, France; Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue, S.E., Minneapolis, MN 55455, USA |
| Выпуск | 7 |
