Table 4. Filter Cake Properties for Drilling Mud Formulations.

temperature (°C)	drilling fluids	quantity of filtrate volume (cm3)	thickness of filter cake (cm)	permeability of filter cake (D)
180	base	9.3	0.077	6.39 × 10–7
	PAC-LV	4.6	0.027	1.11 × 10–7
	PAM	4.2	0.017	6.37 × 10–8
	PEX	3.2	0.017	4.85 × 10–8
200	base	14.4	0.050	6.42 × 10–7
	PAC-LV	9.1	0.060	4.87 × 10–7
	PAM	8.4	0.050	3.75 × 10–7
	PEX	7.9	0.040	2.88 × 10–7
220	base	11.8	0.150	1.58 × 10–6
	PAC-LV	12.6	0.080	8.99 × 10–7
	PAM	11.9	0.080	8.49 × 10–7
	PEX	11.9	0.060	6.37 × 10–7