1---2name: drilling-well-planning-and-design3description: Sub-skill of drilling: Well Planning and Design (+5).4---56# Well Planning and Design (+5)78## Well Planning and Design91011- **Well Architecture**: Vertical, deviated, horizontal, multilateral wells12- **Trajectory Design**: Build/hold/drop sections, dogleg severity, torque and drag13- **Casing Design**: Casing string selection, burst/collapse calculations, cement programs14- **Wellbore Stability**: Geomechanical modeling, mud weight windows, breakout analysis15- **Anti-Collision**: Well spacing, separation factor, collision avoidance16- **Drilling Programs**: AFE preparation, time/depth curves, operational procedures1718## Drilling Operations192021- **Drilling Parameters**: WOB, RPM, ROP optimization, MSE calculations22- **Hydraulics**: ECD management, hole cleaning, cuttings transport23- **Drilling Fluids**: Mud properties, rheology, filtration control, lost circulation24- **Directional Drilling**: MWD/LWD, RSS, mud motors, geosteering25- **Managed Pressure Drilling**: MPD, UBD, dual gradient drilling26- **Drilling Automation**: Auto-driller, closed-loop systems, real-time optimization2728## Drilling Equipment and Technology293031- **Rig Systems**: Drawworks, rotary systems, mud pumps, BOPs32- **Drill String Components**: Drill pipe, collars, HWDP, stabilizers, jars33- **Bits**: PDC, roller cone, hybrid bits, bit selection, dull grading34- **Downhole Tools**: MWD/LWD tools, motors, RSS, drilling jars35- **Surface Equipment**: Shale shakers, centrifuges, mud tanks, degassers36- **Rig Instrumentation**: EDR, WITS, real-time data acquisition3738## Well Control and Safety394041- **Kick Detection**: Flow checks, pit gain, drilling breaks, gas shows42- **Well Control Methods**: Driller's method, wait and weight, volumetric43- **BOP Systems**: Stack configuration, testing procedures, shear calculations44- **Formation Pressures**: Pore pressure prediction, fracture gradients, LOT/FIT45- **H2S Operations**: Sour gas procedures, safety equipment, emergency response46- **Barrier Management**: Primary and secondary barriers, barrier verification4748## Drilling Fluids Engineering495051- **Water-Based Muds**: Bentonite, polymer, KCl systems52- **Oil-Based Muds**: Invert emulsion, synthetic-based muds53- **Specialty Fluids**: Foam, air/gas drilling, formate brines54- **Mud Properties**: Density, viscosity, gel strength, fluid loss55- **Additives**: Viscosifiers, thinners, LCM, shale inhibitors56- **Solids Control**: Particle size distribution, centrifuge operations5758## Specialized Drilling Operations596061- **Deepwater Drilling**: Riser management, shallow hazards, hydrates62- **HPHT Wells**: Equipment ratings, well control, mud stability63- **ERD Wells**: Torque/drag limitations, ECD management, hole cleaning64- **Geothermal Drilling**: High temperature tools, lost circulation, scaling65- **Coiled Tubing Drilling**: CTD operations, limitations, applications66- **Casing While Drilling**: CwD systems, level 1-3 operations