Learn More
Formation Temperature & Geothermal Gradients: What's It Like Down There?
How temperature increases with depth, regional gradient variations, BHT corrections, and why formation temperature matters for drilling fluids, cement, and geothermal projects.
Darcy's Law: How Groundwater Actually Moves Through Rock and Soil
The fundamentals of Darcy's Law, hydraulic conductivity, seepage velocity vs Darcy velocity, and practical applications in dewatering, contamination, and aquifer testing.
Related Tools
Hydrostatic Pressure Calculator
Calculate hydrostatic pressure from mud weight and true vertical depth. Oilfield imperial (ppg/psi) and metric (SG/kPa) units with overbalance analysis and pressure gradient.
Equivalent Circulating Density Calculator
Calculate ECD from mud weight and annular pressure loss. Determine safe operating window between pore pressure and fracture gradient for wellbore stability.
Annular Velocity Calculator
Calculate annular velocity and flow rate for hole cleaning. Enter hole/pipe diameters and pump rate to get AV in ft/min with cuttings transport analysis.