Laboratory experiments on the effects of corrosion inhibitor on the mechanical properties of reservoir rock

Geothermal Energy

Science – Society – Technology

Table 2 Experimental conditions and main characteristics of all experiments

Sample number	Fluid	P_c [MPa]	Porosity [%]	Density (kg/m³)	(σ_diff)_max [MPa]	E [GPa]	S₀ [MPa]	µ [−]	CT/TS
Bentheim sandstone
BS-05	DI	30	26.5	2.03	176.7	24.5	20 ± 3	0.80 ± 0.07
BS-09	DI	20	26.9	2.03	148.9	24.1			TS
BS-07	DI	10	26.7	2.03	110.3	23.5
BS-04	1	30	26.0	2.06	173.8	24.6	18 ± 3	0.80 ± 0.07
BS-01	1	20	26.8	2.02	144.8	24.4			TS
BS-10	1	10	27.3	2.01	106.5	21.6
BS-11	1	10	26.7	2.01	110.7	23.1
BS-17	2	30	27.1	2.02	177.3	25.1	19 ± 3	0.81 ± 0.06
BS-16	2	20	26.6	2.01	145.9	24.5
BS-15	2	10	27.2	2.01	110.1	23.2
BS-14	2	10	26.6	2.05	109.4	23.4
Treuchtlinger marmor
TM3-6	DI	30	8.8	2.52	205.6	49.7	33 ± 5	0.67 ± 0.07	CT
TM4-2	DI	20	10.3	2.53	180.2	42.5			TS
TM4-1	DI	10	10.2	2.55	152.9	43.9			CT
TM2-4	DI	10	8.3	2.53	157.2	50.1			CT
TM2-8	1	30	8.3	2.56	217.4	46.6	59 ± 10	0.43 ± 0.11	CT
TM2-2	1	20	7.8	2.53	201.9	39.1			TS
TM2-5	1	10	8.8	2.56	191.4	46.6			CT
TM2-6	2	30	7.7	2.51	241.8	52.7	23 ± 3	1.01 ± 0.05
TM2-3	2	20	8.5	2.52	205.9	45.3			TS
TM3-1	2	10	8.3	2.48	146.9	39.1
TM2-7	2	10	8.7	2.49	148.2	45

E is the Youngs Modulus, S₀ the cohesion and µ the friction coefficient obtained from the Mohr–Coulomb failure criterion. TS and CT indicate whether ‘thin sections’ or ‘computerized tomographic scans’ were made, respectively