Research Article
Optimization of EOR Displacement Methods Based on Multiple Factor Analysis
Table 3
Sequence of displacement methods with different porosity and air permeability.
| | Porosity (%) | (0,10] | (10,15] | (15.22] | (22,24] | (24,27] | (27,36] | (36,+) | | Displacement method | D>E>A>B>C | D>E>B>A>C | E>D>C>B>A | E>C>A>B>D | C>A>B>E>D | A>C>B>E>D | A>B>C>E>D |
| | Air permeability(10-3 μm2) | (0,8] | (8,90] | (90,130] | (130,150] | (150,200] | (200,450] | (450,+) | | Displacement method | D>E>C>B>A | E>D>C>B>A | E>C>D>B>A | C>E>B>A>D | C>B>E>A>D | C>B>A>E>D | B>C>A>E>D |
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A: gravity flooding; B: steam flooding; C: in situ combustion; D: miscible gas flooding; E: immiscible gas flooding.
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