// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
sci.reservoir-pressure-gradient Calculator
Calculates reservoir pore pressure and fluid pressure gradient from depth, fluid density, and overburden stress. Normal pore pressure gradient = 0.434 psi/ft (10 kPa/m) for freshwater — overpressured reservoirs (>0.5 psi/ft) require heavier drilling mud to prevent well blowout.
Inputs
Depth Ft
Vertical extent downward, or thickness of a layer. For tanks: affects pressure at the base (P = ρgh).
Fluid Density Ppg
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
Overburden Gradient
Reference formula or conversion factor shown for context.
Results
pore pressure (psi)
Reference formula or conversion factor shown for context.
pressure gradient (psi/ft)
Sample size or count used in the calculation.
overburden pressure (psi)
Sample size or count used in the calculation.
net effective stress (psi)
Internal force per unit area (Pa or MPa). Must stay below yield strength in service. Beyond yield: permanent deformation. Beyond tensile strength: fracture.
normal pressure gradient
Sample size or count used in the calculation.
0.052 × ppg = psi/ft
Reference formula or conversion factor shown for context.