Estimation of Wellbore and Formation Temperatures during the Drilling Process under Lost Circulation Conditions

Table 2

Basic data of thermal physical parameters.

	Drill pipe/casing	Drill string	Drill fluid	Cement	Formation	Formation fluid
Density (kg/cm^3)	8000	8900	1200	2140	2640	1050
Heat capacity (J/kg·°C)	400	400	1600	2000	800	4200
Thermal conductivity (w/m·°C)	43.75	43.75	1.75	0.70	2.25	0.50