Primary Extraction is the primary stage of crude oil recovery by underground pressure to drive fluids to the surface after an oil well has been drilled. When the pressure falls, artificial lift technologies, such as gas lift technology which is gas pumps back down the well underneath the oil, or gravity drainage of oil from upper parts of the well and displacement of oil by water. The Primary Extraction is able to recover 5 to 15% of the total amount of petroleum within a well. (Refer to the Petroleum Extraction)
Related Definitions in the Project: The Plant and Process Unit; Upstream Engineering
