Wiley-Scrivener: Formulas and Calculations for Drilling Operations (PDF)

Preface. 1 Basic Calculations. 1.1 Capacities. 1.2 Displacement. 1.3 Buoyancy, Buoyed Weight, and Buoyancy Factor (BF). 1.4 Effective Weight. 1.5 Modulus of Elasticity. 1.6 Poisson's Ratio. 1.7 Minimum Yield Strength. 1.8 Ultimate Tensile Strength. 1.9 Fatigue Endurance Limit. 1.10 Twist. 1.11 Composite Materials. 1.12 Friction. 1.13 Gauge and Absolute Pressures. 1.14 Temperature. 1.15 Horsepower. 1.16 Flow Velocity. 2 Rig Equipment. 2.1 Overall Efficiency of Engines. 2.2 Energy Transfer. 2.3 Blocks and Drilling Line. 2.4 Derrick Load. 2.5 Ton-Miles (TM) Calculations. 2.6 Crown Block Capacity. 2.7 Line Pull Efficiency Factor. 2.8 Rotary Power. 2.9 Mud Pumps. 2.10 Energy Transfer. 2.11 Offshore Vessels. 3 Well Path Design. 3.1 Average Curvature - Average Dogleg Severity (DLS). 3.2 Vertical and Horizontal Curvatures. 3.3 Borehole Curvature. 3.4 Bending Angle. 3.5 Tool Face Angle. 3.6 Borehole Torsion. 3.7 Wellpath Length Calculations. 3.8 Types of Designs. 3.9 Tool Face Angle Change. 3.10 Horizontal Displacement. 3.11 Tortuosity. 3.12 Well Profile Energy. 3.13 Magnetic Reference and Interference. 3.14 Wellbore Trajectory Uncertainty. 4 Fluids. 4.1 Equivalent Mud Weight. 4.2 Mud Weighting. 4.3 Common Weighting Materials. 4.4 Diluting Mud. 4.5 Base Fluid - Water-Oil Ratios. 4.6 Fluid Loss. 4.7 Acidity-Alkalinity. 4.8 Marsh Funnel. 4.9 Mud Rheology. 4.10 Plastic Viscosity, Yield Point and Zero-Sec-Gel. 5 Hydraulics. 5.1 Equivalent Mud Weight. 5.2 Equivalent Circulating Density. 5.3 Hydraulics: Basic Calculations. 5.4 Bit Hydraulics. 5.5 Bingham Plastic Model. 5.6 Power Law Model. 5.7 Gel Breaking Pressure. 5.8 Hole Cleaning - Cuttings Transport. 5.9 Transport Velocity. 6 Tubular Mechanics. 6.1 Drill Collar Length. 6.2 Bending Stress Ratio (BSR). 6.3 Pipe Wall Thickness. 6.4 Resonant Frequency. 6.5 Tensions. 6.6 Drag Force. 6.7 Side Force Calculation. 6.8 Torque and Makeup Torque. 6.9 Buckling. 6.10 Maximum Permissible Dogleg. 6.11 Length Change Calculations. 6.12

DR. ROBELLO SAMUEL is a chief technical advisor in the drilling division of Halliburton and has been with the company since 1998. With dozens of articles and several books to his credit, including Downhole Drilling Tools, Drilling Engineering, and Advanced Drilling Engineering, he is also an adjunct professor in the petroleum program at the University of Houston. Dr. Samuel is also on the board of Journal of Petroleum Science and Engineering, and he holds degrees from the University of Madurai (BS and MS) and Tulsa University (MS and Ph.D.).

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