Dumping syndrome, or ârapid gastric emptyingâ, is extremely common following bariatric surgery procedures that bypass the majority of your stomach. Believe it or not, for many weight loss surgery patients it is actually a good thing despite its unpleasant symptomsâ¦.
Estimate the total reservoir compressibility for a sandstone formation that is characterized by a porosity of 25%. The reservoir is undersaturated (i.e., no initial gas cap is present) and the oil and water saturations are 70 and 30%, respectively.stimate the total reservoir compressibility for a sandstone formation that is characterized by a porosity of 25%. The reservoir is undersaturated (i.e., no initial gas cap is present) and the oil and water saturations are 70 and 30%, respectively.
Even though sandstone is hard, and appears very solid, it is really very much like a sponge (a very hard, incompressible sponge). Between the grains of sand, enough space exists to trap fluids like oil or natural gas! The holes in sandstone are called porosity (from the word âporousâ).