| chemical types |
anionic |
cationic |
nonionic |
Anion works best. |
| concentration, wt % |
0.00 |
0.10 |
0.30 |
0.50 |
Best when
the concentration
is 0.30 wt %. |
| crude oil types |
crude oil |
mixture of reservoir crude oil
and kerosene |
The
higher the crude oil
viscosity, the lower the imbibition efficiency. |
| water type |
distilled
water |
simulated formation water |
The formation water is conducive
to the emulsification of crude oil and improves imbibition replacement
efficiency. |
| temperature |
NT |
60 °C |
Temperature is beneficial
to enhancing imbibition replacement efficiency. |
| pressure |
NP |
15 MPa |
Pressure helps to enhance
the imbibition effect, but the effect is weaker than that of temperature. |
