Research on the Definition of Economic Limits for the Development of Unconventional Natural Gas under New Situations

Table 7

Economic infeasibility probabilities at different gas recovery rates.

Recovery rate (%)	Year of stable production	Recovery (%)	P (NPV < 0) (%)
3.1	11.1	72.7	52.4
3.3	9.5	72.0	48.2
3.5	8.6	67.9	43.7
3.7	7.7	63.6	47.3
3.9	6.6	60.1	54.6
4.1	5.9	56.2	63.8
4.3	5.2	52.0	89.4