Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection

Table 2

Material parameters of casing, cement and formation.

Materials	Modulus of elasticity (GPa)	Tangent modulus (GPa)	Poisson ratio	Coefficient of thermal expansion (10^−6·°C^−1)	Thermal conductivity (W·m^−1·°C^−1)	Yield strength (MPa)
Casing	Vary	61	0.3	9.6	45	621
Cement	Vary	3.2	0.16	7.5	0.9	18
Formation	Vary	3.2	0.2	7.5	2.2	22