Recovery tertiary

Enhanced oil recovery (EOR) processes (also called tertiary recovery processes) are used to recover a portion of the remaining two-thirds... 

Micellar flooding is a promising tertiary oil-recovery method, perhaps the only method that has been shown to be successful in the field for depleted light oil reservoirs. As a tertiary recovery method, the micellar flooding process has desirable features of several chemical methods (e.g., miscible-type displacement) and is less susceptible to some of the drawbacks of chemical methods, such as adsorption. It has been shown that a suitable preflush can considerably curtail the surfactant loss to the rock matrix. In addition, the use of multiple micellar solutions, selected on the basis of phase behavior, can increase oil recovery with respect to the amount of surfactant, in comparison with a single solution. Laboratory tests showed that oil recovery-to-slug volume ratios as high as 15 can be achieved [439]. 

R. Daharu, S. Thomas, and Ali. S. M. Farouq. Micellar flooding for tertiary recovery Recent advances and potential. In Proceedings Volume, pages 414-428. 10th SPE Trinidad Tobago Sect Tech Conf (Port of Spain, Trinidad, 6/26-6/28), 1991. 

Formulate efficient micellar slugs for the tertiary recovery of three light oils viz. Bradford crude, Bonnie Glen crude, and Provost crude ... 

Table III. Tertiary Recovery with Single Micellar Slugs...

Crude Oil Slug Type Slug Size % PV Tertiary Recovery % oil in place... 

Figure 8. Tertiary Recovery of Bradford Crude Using Oil-Rich, Water-Rich and Composite Slugs...

Next, the proportions of oil-rich and water-rich slugs were varied for a given slug size (10% pv) and the tertiary recoveries were compared. As seen in Table V, oil-rich slugs were more effective... 

Table V. Effect of Oil-Rich/Water-Rich Slug Volume Ratio on Tertiary Recovery...

Table VIII. Tertiary Recovery with Smaller Slug Size...

Initial Oil Saturation - 31.94% PV Slug Size - 5% PV B4 Graded Buffer Size - 50% PV Frontal Velocity -1.39 m/day Tertiary Recovery - 97.94% OIP... 

Geffen, T.M. Here s What s Needed to Get Tertiary Recovery Going, World Oil 1975, March, 53. 

Use of biotechnology in the oil industry is almost unknown. As a whole, only a few initiatives related to use of biofiltration for gas treatment has reached refining operations. In the exploration and production segment of the oil industry, MEOR has been known and employed to a certain extent in secondary or tertiary recovery of oil. 

Malmberg, E.W. Smith, L. The Adsorption Losses of Surfactants in Tertiary Recovery Systems in Porous Media in Improved Oil Recovery by Surfactant and Polymer Flooding, Shah, D.O. Schechter, R.S. (Eds.), Academic Press New York, 1977, pp. 275-292. 

Parro, D. (1984) Membrane carbon dioxide separation proves out at Sacroc tertiary recovery project. Oil Gas Journal, 82 (39), 85-86, 88. 

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