21. Drilling often plugs up the pore spaces at the wellbore wall, reducing permeability at and near the wellbore. 22. The mixture of water and dissolved or suspended materials that occupy the soil pore space is called the soil solution. 23. In areas with sufficient precipitation, water infiltrates through pore spaces in the soil, passing through the unsaturated zone. 24. Below the water table, where in general all pore spaces are saturated with water, is the phreatic zone. 25. In saturated groundwater aquifers, all available pore spaces are filled with water ( volumetric water content = porosity ). 26. The constrictivity is defined not for a single pore, but as the parameter of the entire pore space considered. 27. The channel sand deposits host the majority of the bitumen which lies in the pore spaces between the sand grains. 28. The detachment along the weak layers was likely aided by the presence of high-pressure water in the sediment pore spaces . 29. The dissolved material precipitates again in open pore spaces , which means there is a net flow of material into the pores. 30. At increasing depths water fills in more of the pore spaces in the soils, until a zone of saturation is reached.
