gravity drainage

Gravity drainage refers to the natural process by which fluids, such as oil, liquids, or gas, move downward through porous rocks due to gravity. When extraction begins, the force of gravity helps displace these fluids from the reservoir toward production wells positioned lower than the fluid level. This method relies on the difference in elevation and density between the fluids and their surroundings, enabling the fluids to flow more easily under the influence of gravity alone, without the need for additional pumping or pressure. Gravity drainage is often a natural, passive process in reservoirs with suitable geological conditions.