Page 435 - Enhanced Oil Recovery in Shale and Tight Reservoirs

Air injection 403

Figure 13.1 An example of TGA apparatus and its sample crucible.

Figure 13.2 An example of a DSC apparatus.

is collected. Two peaks are seen for crude oils, one for the LTO and the
other for high-temperature oxidation (HTO). The experiment is performed
at an atmospheric pressure. The experimental data are analyzed in the
method described in Section 13.3.2.

13.2.3 Small batch reactor
In a small batch reactor (SBR) experiment (Fig. 13.3), oil and loose sand are
mixed and placed in a steel container so that air can contact oil. In the
container, there is a free space to fill high-pressure air. During the experi-
ment, excess oil exists, and the oven or system temperature is kept constant.