Methane Flux Effect on Hydrate Formation and Its Acoustic Responses in Natural Sands

Table 1

Effect of methane flux on hydrate formation.

Run no.	Gas flux mode/(ml/min)	T/°C	Upper gas cell pressure/MPa	Lower gas cell pressure/MPa	Maximum hydrate saturation/%	Vs; (m/s)	Vp; (m/s)
1	30	2.25	3.46	3.51	71.4	1291	2670
2	30	3.06	3.77	3.78	71.4	1287	2674
3	30	2.09	3.22	3.26	71.4	1285	2668
4	60	4.07	4.52	4.54	74.2	1328	2722
5	60	3.90	4.82	4.84	74.2	1327	2721
6	60	3.58	5.53	5.54	74.2	1332	2735
7	200	1.61	5.70	6.57	82.7	1531	3150
8	200	1.95	5.18	6.11	82.7	1535	3167
9	200	1.55	6.09	6.38	82.7	1533	3153
10	400	2.52	6.11	6.12	90.9	1638	3298
11	400	3.02	6.15	6.31	90.9	1618	3287
12	400	2.72	6.05	6.11	90.9	1635	3293