Enhanced oil recovery method “hatzikostas injection of carbon dioxide into the mining hole”.
Enhanced oil recovery method “hatzikostas injection of carbon dioxide into production wells” refers to gas methods, which, in the experience of the leading oil producing companies to increase oil recovery from the field to 40-70% depending on the geological and physical conditions of the field.
Enhanced oil recovery method “hatzikostas injection of carbonic gas in the mining hole” refers to gas methods, which, according to leading oil companies to improve oil recovery of the Deposit up to 40-70% depending on the geological and physical conditions of the field.
Prerequisites for using this method are: most of the producing fields in the world come at a late stage of production, and their remaining reserves are classified as stranded. The share of recoverable oil shall not exceed 45%. Production of easy oil, the share of tight oil is growing steadily.
This method consists in the injection into the well production of liquefied carbon dioxide with a subsequent alternation of oil production and CO2 injection. The number of cycles depends on the stage of development of oil viscosity, permeability and heterogeneity of the reservoir.
The method consists in changing the physical characteristics of the environment field. Carbon dioxide is highly soluble in crude oil, causing it to swell to 10 times reducing the viscosity of heavy fractions.
The essential point of economic feasibility of application of the method “hatzikostas injection of carbonic gas in the mining hole” is the price of a barrel of oil and price of liquefied CO2.
In the implementation of the technology of oil production surplus “foreign” carbon dioxide (emissions production) can be liquefied and put into production.
– this technology solves the problem of the full development of any oil reservoir
– is carried out on a producing well – no drilling required injection wells,
– the shorter the term of the project execution and faster results compared to full flooding CO2
– ability to effectively absorb the greenhouse gas CO2 and its storage in underground reservoirs in the amount of 10-20 million m3 per year, which means a reduction of environmental risk from greenhouse gas CO2
– economic feasibility.