The Siberian Federal University (SFU) has presented improved nanosuspensions for increasing oil recovery in fields with hard-to-recover reserves, according to Roman Vaganov, a junior researcher at the SFU's Laboratory of Physicochemical Technologies for Development.
Nanosuspensions are injected into the formation to increase the efficiency of oil extraction.
It has been proven that silicon dioxide nanosuspensions work effectively in low-mineralized oil fields, where the salt concentration is 5-10 g per liter. However, a number of fields, especially in Eastern Siberia, have high mineralization - up to 300 g per liter. In such an environment, nanosuspensions become unstable. And we have stabilized them.
Scientists have concluded that adding salts of citric, tartaric, and malonic acids in a concentration of 1% allows maintaining high stability of nanosuspensions. These stabilizers are affordable and economical to use.
According to Vaganov, about 30% of Russian oil fields have a high salt content. Therefore, the new suspensions have already attracted the attention of representatives of the oil industry.
Earlier www1.ru reported that a new Russian oil production technology allows faster drilling of wells up to 4 km deep.
Read materials on the topic:
Russia Uses Development of Topol and Yars Manufacturers in Oil Production for the First Time
New Gas Processing Unit with 17.5 Million Cubic Meters of Permeate Flow Launched in Russia
Technology Created in Saratov Region to Increase Oil and Gas Production