Open Access

Table 1

Basic parameters for water hammer simulation.

Relevant parameters Value Relevant parameters Value
Liquid phase elastic modulus (Pa) 5 × 109 Gas elastic modulus (Pa) 2 × 105
Drill pipe elastic modulus (Pa) 2.06 × 1011 Casing elastic modulus (Pa) 2.06 × 1011
Formation density (kg/m3) 2600 External diameter of drill pipe (mm) 127
Formation permeability (mD) 20 Internal diameter of drill pipe (mm) 108
Formation supply radius (m) 150 Reservoir effective thickness (m) 3
Relative density of natural gas 0.65 Gas viscosity (mPa s) 0.027
Surface temperature (°C) 20 Geothermal gradient (°C/m) 0.023

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