Laboratory Study on Core Fracturing Simulations for Wellbore Strengthening

Table 6

Results of the core fracturing experiment with different drilling fluid formulas.

Number	Formula	Fracture pressure (MPa)	FLAPI (mL)
1	Water-based base drilling fluid	18.99	5.8
2	Water-based base drilling fluid + 10% A	18.66	5.4
3	Water-based base drilling fluid + 10% B	23.56	4
4	Water-based base drilling fluid + 10% C	24.04	4.4
5	Water-based base drilling fluid + 10% B1	19.93	6.2
6	Water-based base drilling fluid + 10% B2	18.81	6
7	Water-based base drilling fluid + 10% B4	15.43	6.4
8	Water-based base drilling fluid + 5.12% A + 3.9% B + 0.98% C	26.16	4
9	Water-based base drilling fluid + 7.98% B + 2.02% C	22.26	3.6
10	Water-based base drilling fluid + 3% B	20.91	6.4
11	Water-based base drilling fluid + 6.5% B	23.25	5.8
12	Water-based base drilling fluid + 8.5% B	22.96	5.8
13	Water-based base drilling fluid + 15% B	22.24	5.8