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Primary, Secondary, Tertiary Recovery:

During the primary recovery stage, reservoir drive comes from a number of natural mechanisms. These include: natural water displacing oil downward into the well, expansion of the natural gas at the top of the reservoir, expansion of gas initially dissolved in the crude oil, and gravity drainage resulting from the movement of oil within the reservoir from the upper to the lower parts where the wells are located. Recovery factor during the primary recovery stage is typically 5-15%.

Over the lifetime of the well the pressure will fall, and at some point there will be insufficient underground pressure to force the oil to the surface. After natural reservoir drive diminishes, secondary recovery methods are applied.

Enhanced, or Tertiary oil recovery methods increase the mobility of the oil in order to increase extraction.


Tanmia can increase your production and lower your lifting costs. We design, develop and provide chemically enhanced oil recovery technologies that increase the effectiveness of oil and gas field waterflooding, steam injection and improve recovery. Tanmia can help you revitalize your field and increase your company’s oil production. Tanmia will provide state of the art technology and coordinate with your production engineers the implementation of our Process.

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