Drilling Hydraulics Design

About Course

The course is designed for drilling operational staff and drilling engineers with the objective to determine subsurface wellbore pressures during drilling operations under static and dynamic conditions

Course Details

Introduction to Oil Gas Drilling Oil and gas development Formations rock pressure fluid traps Fundamentals of petroleum Basic geology Drilling hydraulics Drilling fluid properties Density Compressibility of fluids properties of gases Z Factor Hydrostatic pressure Annular pressure in complex fluid columns Fluid Mechanics Free body diagram Buoyancy Forces and stresses in submerged tubular Well Control Identification of a kick Shut in pressures Kill mud weight calculations Annular pressure during well control Strength of casing shoe and maximum allowable annular pressure Exercise Formation Pressure Pre pressure development Porosity and permeability Pore pressure measurements Fluid pressure gradient and mud weight requirements Fluid level in annulus after loss circulation Exercises Prediction of Fracture Gradient Definition Estimate fracture gradient from correlations Measurement of fracture gradient Leak of Test LOT LOT data Analysis Exercises Basic Laws of Fluid Flow Introduction Conservation of mass Velocity equation Energy and pressure balance equations Hydraulic calculations Pressure drop through bit nozzles Rheological Models Introduction Calculation of frictional pressure losses Newtonian model Bingham Plastic model Power Law model Flow regimes laminar and turbulent Frictional pressure loss equations Exercises Bit Hydraulics Introduction Bit nozzle size design Optimization of bit hydraulics Bit hydraulic horsepower Jet impact force Exercise Hole Cleaning in Vertical Wells Introduction Particle slip velocity Cutting transport ratio Factors affecting hole cleaning Empirical correlations Exercise Hole Cleaning in Directional Wells Same rules don t apply Cutting transport in directional wells Difficulties in hole cleaning at different angles Factors affecting hole cleaning in directional wells Flow rate requirements for hole cleaning in different hole conditions Exercises Swab and Surge Definitions Burkhardt method Mitchell method Recommended speeds for running in hole and pulling out of hole Exercises