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An Experimental Investigation of Feasibility of Gas Huff and Puff for Recovering Crude Oil with Different Viscosities

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Figure

Figure  2:  A  schematic  of  the  experimental  setup;  1)  Water source; 2) Pump; 3) Intermediate container; 4) CO 2 cylinder; 5) N 2  cylinder; 6) Backpressure valve; 7) Valve;  8) Sandpack; 9) Valve; 10) N 2  cylinder; 11) Backpressure  valve; 12) Cyli
Figure 5: The effect of multi-cycle gas huff and puff at  the backpressure of 8 MPa.
Figure 7: The effect of multi-cycle gas huff and puff at  the backpressure of 0.1 MPa.
Table 3: Influence of oil viscosity on huff and puff effect
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