Table 1 Drilling design parameters.

From: Principle and calculation method of hydraulic fracturing technique for in-situ stress based on two arbitrary holes

Hole No.

Azimuth (°)

Dip angle (°)

Hole depth (m)

Hole diameter (mm)

Purpose of drilling

1#

26

30

15

94

Core sampling and in-situ stress testing

2#

11

18

15

94

Core sampling and in-situ stress testing

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