The Responses of Injection Pressure and Fracture Width during Height Extension in Sand-Mud Interbed Reservoirs in the Dongsheng Gas Field

Table 1

Rock mechanical properties for simulation.

Property	Fine sand	Coarse sand	Mud cap/interlayer
Young’s modulus (GPa)	35	59	20
Poisson’s ratio	0.2	0.25	0.3
Tensile strength (MPa)	2.5	2.4	7.51
Cohesion (MPa)	36	6.4	13
Friction angle (°)	19	48	18