Handy calculations

This is an excellent web site that provides handy calculations for almost all scientific and engineering disciplines.

Engineering
Petroleum Engineering
Chemical Engineering
Mechanical Engineering
Civil Engineering
Science
Biotechnology
Nanotechnology
Physics
Chemistry
Financial
Basic cashflow analysis
Project selection/Capital allocation by Ranking method
Measurement Units
Units Conversion Calculators
Units Conversion factors
Drilling
Surge & Swab pressures
Bit Hydraulics Optimization
Cuttings Slip Velocity
Equivalent Circulation Density Of Mud
Basic solids analysis
Drilling rate d-Exponent
Directional survey
Well Schematic I - Single vertical completion
Well Schematic II - Dual vertical completion
Well Schematic III - Horizontal single completion
Casing Data Browser
Reservoir I
Material Balance Equation I: SolutionGas-GasCap Drive
Material Balance Equation II: SolutionGas with GasCap Withdrawal/Injection
Pressure Buildup Analysis - Horner Plot (Oilwell)
Inflow Performance Relationships For solution-gas drive Vertical wells
Inflow Performance Relationships For solution-gas drive Slanted wells
Inflow Performance Relationships For solution-gas drive Horizontal wells
Horizontal well performance (oil)
Water coning in a vertical well
Combined gas & water coning in a vertical well
Water breakthrough time in a vertical well
Reservoir II - Gas
Original Gas In Place: Volumetric reservoir - p/z method
Original Gas In Place: Abnormally Pressured gas reservoir
Coalbed Methane: Original Gas In Place by P/Z* method
Coalbed Methane: Reservoir performance prediction
Gaswell deliverability - Backpressure AOF test
Horizontal well performance (gas)
Gas Properties - I: Z, ì, Bg and Sg for a given Composition
Gas Properties - II: Z, ì, Bg for a given Specific gravity
Real gas pseudo-pressure
Gas coning in a vertical well
Production
Decline Curve Analysis
Flow through chokes (1-phase)
Flow through chokes (2-phase)
Gaswell flow in Vertical Tubing
Gas flow in Horizontal Pipeline
Gas flow in Inclined Pipeline
API Gravity Correction to 60°F
Gas well load-up: Critical Rate
Tubing Data Browser
Skin Factors In Perforated Vertical Wells
Skin Factors In Perforated Horizontal Wells
Productivity Ratio Of Perforated Horizontal Wells
Geosciences
Contouring
Conventional well log analysis I
Conventional well log analysis II
Economics
Basic cashflow analysis
Comprehensive cashflow analysis (oilfield)
Comprehensive cashflow analysis (gasfield)
'Optimum' number of Oilfield development wells
Project selection/Capital allocation by Ranking method
Miscellaneous
Units Conversion Calculators
Units Conversion factors
World Oil & Gas Production & Reserves - Country by country Data
Mechanical Engineering Calculators
Civil Engineering Calculators
Chemical Engineering Calculators
Physical Properties
Physical properties of Water
Liquid-phase Diffusion coefficients
Gas Z-factor, Viscosity & Specific Gravity for a given Composition
Gas Z-factor & Viscosity for a given Specific gravity
API gravity Correction To 60°F
Fluid Flow
Reynolds Number and Friction Factors
Vapor-Liquid 2-Phase Vertical downflow
Flow Through Packed Bed
Liquid Pipe flow: Pressure Drop calculation
Liquid Pipe flow: Pipe Length calculation
Liquid Pipe flow: Flow Rate calculation
Liquid Pipe flow: Pipe Diameter calculation
Gas flow in Horizontal Pipeline
Gas flow in Inclined Pipeline
Heat Transfer
Shell & Tube Heat Exchanger: Corrected LMTD
Air-cooled Heat Exchanger Design
Equipment Sizing
Sizing Of Liquid-Vapor Separators
Partial Volumes Of Tanks
Orifice Sizing for fluid flow
Gas Compressor performance
Mass Transfer
Multicomponent Equilibrium Flash Calculations
Packed-Tower Sizing
Economics
Basic cashflow analysis
Project selection/Capital allocation by Ranking method
Measurement Units
Units Conversion Calculators
Units Conversion factors
Other Calculators
Petroleum Engineering Calculators
Chemistry Calculators
Mechanical Engineering Calculators
Civil Engineering Calculators
Machine Mechanics
Rolling Wheel
Motion of Crank-Slider Mechanism
Buckling of Helical Spring
Bolt & Nut Bolted Joint: Stiffnesses of components
Cap Screw Bolted Joint: Stiffnesses of components
Bolted Joint: Static and Dynamic loading
Butt Weld under axial and transverse loading
Fillet Weld under Torsional loading
Fillet Weld under Bending loading
Material Stresses
Pressure loading: Thin-walled vessels (Sphere & Cylinder)
Pressure loading: Thick-walled Cylinder
Stresses due to Interference (press or shrink) fit
Contact stresses: Sphere on a sphere
Contact stresses: Sphere on a Flat surface
Contact stresses: Cylinder on a cylinder
Contact stresses: Cylinder on a Flat surface
Rotational loading: Thin disk
2D Stresses & Mohr's Circle
3D Stresses & Mohr's Circles
Static Failure analysis: Ductile material
Static Failure analysis: Brittle material
Buckling of Column with Rectangular cross-section
Buckling of Column with Circular cross-section
Fatigue & dynamic Failure analysis
Stress Concentration factors: Two U-Notches in a Rectangular member
Stress Concentration factors: Circular Hole in a Rectangular member
Stress Concentration factors: U-Notch in a Circular shaft
Stress Concentration factors: Square Shoulder with Fillet in a Circular shaft
Stress Concentration factors: Radial Hole in hollow or solid Circular shaft
Fluid Flow
Reynolds Number and Friction Factors
Liquid Pipe flow: Pressure Drop calculation
Liquid Pipe flow: Pipe Length calculation
Liquid Pipe flow: Flow Rate calculation
Liquid Pipe flow: Pipe Diameter calculation
Gas Z-factor, Viscosity & Specific Gravity for a given Composition
Gas Z-factor & Viscosity for a given Specific gravity
Gas flow in Horizontal Pipeline
Gas flow in Inclined Pipeline
Forces on a pipe bend
Heat Transfer
Shel

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