Exploration on Formation Mechanism of Core Discing Based on Energy Analysis

Table 2

Different in situ stress combination conditions.

Conditions	Axial stress (MPa)	Horizontal stress (MPa)	Core diameter (mm)	Drilling depth (cm)	Kerf width (cm)
1	40	40	10.00	5.00	0.40
2	50	50	10.00	5.00	0.40
3	60	60	10.00	5.00	0.40
4	70	70	10.00	5.00	0.40
5	80	80	10.00	5.00	0.40
6	40	60	10.00	5.00	0.40
7	50	60	10.00	5.00	0.40
8	60	60	10.00	5.00	0.40
9	70	60	10.00	5.00	0.40
10	80	60	10.00	5.00	0.40
11	60	40	10.00	5.00	0.40
12	60	50	10.00	5.00	0.40
13	60	60	10.00	5.00	0.40
14	60	70	10.00	5.00	0.40
15	60	80	10.00	5.00	0.40
16	60	90	10.00	5.00	0.40
17	60	100	10.00	5.00	0.40