Assessment of Chemical Effects on Wellbore Stability in Transition Shale Formation

Table 3

Rock mechanical testing results.

Sample	Confining pressure (MPa)	E (GPa)	Poisson’s ratio	Compressive strength (MPa)
1	0	14.37	0.129	48.97
2	10	20.36	0.29	91
3	10	21.46	0.2	117
4	20	18.12	0.15	141.4