Accumulation Mechanism of Marine Shale Gas Reservoir in Anticlines: A Case Study of the Southern Sichuan Basin and Xiuwu Basin in the Yangtze Region

Table 4

The results of the triaxial unloading experiments, including the breaking confining pressure and the burial depth calculated when a certain axial pressure is applied to the rock (namely, the horizontal stress). See Figure 1 for the well locations.

No.	Block	Fm.	Well	Axial pressure (horizontal stress) (MPa)	Breaking confining pressure (MPa)	Burial depth translated from the confining pressure (m)
1	Pengshui	S1l	Pengye-1	140.0	16.6	1692.2
2	Dingshan	S1l	Dingshan-1	159.3	6.8	697.0
3	Dingshan	S1l	Dingshan-1	163.2	11.1	1126.5
s4	Dingshan	S1l	Dingshan-1	207.0	20.0	2038.7
5	Dingshan	S1l	Dingshan-1	182.3	20.8	2124.7
6	Dingshan	S1l	Dingshan-1	216.0	24.0	2444.6
7	Dingshan	S1l	Dingshan-1	254.0	30.0	3058.1
8	Shizhu	S1l	Jianshen-1	72.9	0.1	5.1
9	Shizhu	S1l	Jianshen-1	74.6	1.3	136.6
10	Shizhu	S1l	Jianshen-1	94.4	7.1	726.8
11	Shizhu	S1l	Jianshen-1	114.1	7.5	762.5
12	Shizhu	S1l	Jianshen-1	114.1	10.3	1054.0
13	Shizhu	S1l	Jianshen-1	134.1	15.2	1550.5
14	Shizhu	S1l	Jianshen-1	137.6	18.3	1862.4
15	Shizhu	S1l	Jianshen-1	158.3	26.0	2648.3
16	Shizhu	S1l	Jianshen-1	159.0	26.3	2678.9