Table 3.

Molecular and isotopic compositions of studied gases.

Well	Chemical composition (% Mol)											Stable Carbon isotopic values (δ13C%)
	C1	C2	C3	iC4	nC4	iC5	nC5	C6	C2+	CO2	N2	δ13C1	δ13C2	δ13C3	δ13CO2
A	98.99	0.08	0	0	0	0	0	0	0.08	0.30	0.6	−49.6	–	–	–
B	98.88	0.13	0.12	0.03	0.08	0.03	0.05	0.04	0.47	0.42	O.2	−50.3	–	–	8.2
C	98.27	0.99	0.08	0.01	0	0	0	0	1.09	0.42	0.2	−43.0	−25.7	−26.6	15.5
D	98.33	0.23	0.05	0.01	0	0	0	0.01	0.30	0.49	0.9	−42.0	−20.2	–	15.4
E	98.67	0.2	0.02	0	0	0	0	0	0.22	0.21	0.9	−49.7	−26.0	–	6.6