How can you maximize oil production from existing reservoirs?

EOR by using captured carbon dioxide. It will benefit in both ways like recovery of more oil and storage of captured Carbondioxide.

EOR functions by altering the chemical composition of the oil itself in order to make it easier to extract. EOR can extract 30% to 60% or more of a reservoir’s oil, compared to 20% to 40% using primary and secondary recovery. There are three primary techniques of EOR: gas injection, thermal injection, and chemical injection. Gas injection involves injecting gases such as natural gas, nitrogen, or carbon dioxide into the reservoir to reduce the interfacial tension between oil and gas and increase the oil displacement efficiency.

Enhanced oil recovery (EOR), also known as “tertiary recovery,” is a process for extracting oil that has not already been retrieved through the primary or secondary oil recovery techniques. Although the primary and secondary recovery techniques rely on the pressure differential between the surface and the underground well, enhanced oil recovery functions by altering the chemical composition of the oil itself in order to make it easier to extract.

That simple: by not polluting any more. Oil company they transmitting more oil and gas to the water and air than to the tankers...

There are three main types of EOR: Gas injection1, which uses gases such as natural gas, nitrogen, or carbon dioxide (CO2) that expand in a reservoir to push additional oil to a production wellbore, or other gases that dissolve in the oil to lower its viscosity and improve its flow rate. Gas injection accounts for nearly 60% of EOR production in the United States3. Thermal injection1, which involves heating the crude oil in the formation to reduce its viscosity and/or vaporize part of the oil and thus decrease the mobility ratio. Chemical injection1, which can involve the use of long-chained molecules called polymers to increase the effectiveness of waterfloods,

There are three main types of enhanced oil recovery: • Thermal Recovery. This is the most prevalent type of EOR and works by heating the oil to reduce its viscosity and allowing easier flow to the surface by introducing steam into the reservoir, which will work to heat the oil. • Gas Injection. Either natural gas, nitrogen or carbon dioxide are injected into the reservoir to mix with the oil, making it more viscous, whilst simultaneously pushing the oil to the surface. • Chemical Injection. This is the least common method of EOR and it works by freeing trapped oil in the well. This is done by lowering surface tension and increasing the efficiency of water-flooding.

Some of the benefits of EOR are: It increases the production and recovery of oil from existing reservoirs, which reduces the need for exploration and drilling of new wells2. It improves the economic viability and profitability of oil fields, especially in areas with high oil demand and low supply2. It reduces the environmental impact of oil extraction, as it uses less energy and water, and emits less greenhouse gases than conventional methods2. It enhances the national energy security and independence, as it reduces the dependence on foreign oil imports and increases the domestic oil reserves2.

EOR helps to maximize the oil reserves recovered, extend the life of fields, and increase the recovery factor. When economical, EOR can provide equivalent or lower cost barrels compared to new greenfield developments. EOR will continue to be an important technology to increase the value of the late life assets and as new techniques evolve EOR will play a greater role in the global supply of oil. EOR is now being considered during the field development to further enhance the performance of new fields. The macro-economic effects of increasing EOR programs will increase production and recoverable oil reserves. EOR can also be used to permanently store carbon dioxide (CO2 ) underground.

Despite higher initial investment costs, EOR can offer attractive long-term economic benefits. By unlocking additional reserves and increasing production rates, EOR projects can generate higher profits over the life of a reservoir. Another significant revenue is that by maximizing the recovery of domestic oil resources, EOR contributes to energy security by reducing dependence on imported oil that strengthens national energy independence

One of the major concerns of using EOR is the environmental impact of the injected substances and the produced fluids. Depending on the type and source of the injection, EOR can result in increased greenhouse gas emissions, water consumption, waste generation, and contamination of soil and groundwater. For example, carbon dioxide (CO2) injection can reduce the carbon footprint of oil production by storing CO2 underground, but it can also cause acidification and corrosion of the reservoir and the wells. Similarly, chemical injection can enhance the oil recovery, but it can also create toxic byproducts and residues that need to be disposed of safely.

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EOR methods are selected depending on appropriate suitability of reservoirs characteristics, taking into consideration for example high salinity and temperature, permeability, difficult localization, and so on. Selecting the appropriate EOR method for your reservoir requires a comprehensive understanding of the reservoir and the oil behavior, and a careful analysis of the potential advantages and disadvantages of each method. By applying the best practices and the latest technologies, you can maximize the oil recovery and the value of your oil reservoir.