Mining Oil and Gas Flooding

Gas drive technology can be divided miscible and immiscible gas drive gas drive are two components from the gas used on the drive can be divided into natural gas, CO2 flooding, N2 flooding etc. there are two common applications integrated. Since 1982, gas drive technology has been greatly developed. States in accordance with Food dehydrator situation focusing on the development of a particular area. If the United States due mainly marine reservoirs, oil density is light, easy to mixed phase, and CO2 has a very rich natural resources, so focus on developing CO2 miscible flooding technology, 2004 U.S. oil production was 31.79 gas drive barrels / d; Canada's oil and crude oil properties and reservoir conditions similar to the U.S., but the lack of CO2 resources, but rich in natural resources, focusing on the development of hydrocarbon miscible flooding technology. Non-hydrocarbon gas drive technology is the focus of future development. CO2 is a single well stimulation techniques to improve oil recovery effective method, field application proved that the technology has obvious effect of increasing oil has good application value. CO2 dissolved gas volume expansion of crude oil, reducing the viscosity of crude oil, with gas drive and plugging ability of the reservoir has a certain role in acidizing, CO2 can light hydrocarbons in crude oil extraction and Briquette machine, CO2 injection improved crude oil and water mobility ratio. Shengli Oilfield, Jiangsu Oilfield, and so have adopted for low-permeability reservoirs of CO2 flooding technology, and achieved good results, but compared with other countries, China in the gas drive technology there is a large gap.