Table A4.
Laboratory studies of the SP and ASP method in carbonate.
| SP or ASP Formulation | Synthetic/Bio/Green | Reservoir | Permeability (mD) | Oil Recovery % | Ref. |
|---|---|---|---|---|---|
| Amphoteric petrostep B-100 surfactant and pusher 700E Polymer and sodium tripolyphosphate and sodium carbonate alkali. | Synthetic | Cretaceous Upper Edwards Reservoir Carbonate Formations From central Texas |
75 | 45 | [60] |
| Cationic surfactants of the type tetra alkyl ammonium Anionic surfactants |
Synthetic | Outcrop chalk From stevns Klint Copenhagen |
2–7 | 10–75 | [87] |
| Anionic (ethoxylated and propoxylated sulfate) surfactants and sodium carbonate alkali mixture. | Synthetic | Dolomite cores | 40–122 | 40–50 | [21] |
| Nonionic ethoxy alcohol surfactants | Synthetic | Dolomite cores | - | [88] | |
| Anionic ethoxylated and propoxylated sulfate surfactants Cationic (CTAB) surfactants |
Synthetic | Calcite, Lithographic Limestone, Marble Dolomite plates |
35–55 | [89] | |
| Cationic C12TAB surfactants | Synthetic | Outcrop chalk from Stvens Klint Copenhagen | 1–3 | 50–90 | [90] |
| Cationic C12TAB surfactants | Synthetic | Outcrop chalk | 2–3 | 20–60 | [91] |
| Five anionic (sulfonate, disulfonate and sulfate) surfactants | Synthetic | Calcites plates limestones cores | 15 | 60–75 | [92] |
| Anionic (sulfonate, disulfonate and sulfate) surfactants | Synthetic | Calcites plates limestones cores | 15 | 30–50 | [93] |
| Two anionic surfactants (ethoxylated sulfonate: AV-70, AV-150) Three nonionic surfactants (NP ethoxylate, 15-s-ethoxylate, TDA 30EO) Four cationic surfactants (CTAB, DTAB, Arquad C-50, Arquad T-50) surfactants |
Synthetic | Limestone | 70–80 | [94] | |
| Anionic surfactants: alkyl propoxy sulfates and their blends with internal olefin sulfonates, alkyl xylene sulfonates | Synthetic | Silurian dolomite outcrop cores | 195 | 26–80 | [95] |
| Two anionic and two nonionic surfactants | Synthetic | Siliceous and carbonate shale cores | - | [96] | |
| Anionic Guerbet alkoxy carboxylate (GAC) surfactants | Synthetic | Silurian dolomite (478 mD) Estaillade limestone core |
478 and 187 | 90–94.5 | [97] |
| Nonionic branched nonylphenol ethoxylates (Huntsman SURFONICS N-120 & Huntsman SURFONICS N-150) and branched isotridecyl ethoxylate (Huntsman SURFONICS TDA-9) surfactants | Synthetic | SACROC carbonate cores | 13–16 | - | [98] |