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EngineeringPetroleum Engineering

Chemical Engineering

Mechanical Engineering

Civil Engineering

ScienceBiotechnology

Nanotechnology

Physics

Chemistry

FinancialBasic cashflow analysis

Project selection/Capital allocation by Ranking method

Measurement UnitsUnits Conversion Calculators

Units Conversion factors

DrillingSurge & 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 IMaterial 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 - GasOriginal 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, , Bg and Sg for a given Composition

Gas Properties - II: Z, , Bg for a given Specific gravity

Real gas pseudo-pressure

Gas coning in a vertical well

ProductionDecline 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 60F

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

GeosciencesContouring

Conventional well log analysis I

Conventional well log analysis II

EconomicsBasic cashflow analysis

Comprehensive cashflow analysis (oilfield)

Comprehensive cashflow analysis (gasfield)

"Optimum" number of Oilfield development wells


Miscellaneous Units Conversion Calculators


World Oil & Gas Production & Reserves - Country by country Data

Mechanical Engineering Calculators

Civil Engineering Calculators

Chemical Engineering Calculators

Physical PropertiesPhysical 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 60F

Fluid FlowReynolds 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



Heat TransferShell & Tube Heat Exchanger: Corrected LMTD

Air-cooled Heat Exchanger Design

Equipment SizingSizing Of Liquid-Vapor Separators

Partial Volumes Of Tanks

Orifice Sizing for fluid flow

Gas Compressor performance

Mass TransferMulticomponent Equilibrium Flash Calculations

Packed-Tower Sizing





Other CalculatorsPetroleum Engineering Calculators

Chemistry Calculators



Machine MechanicsRolling 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 StressesPressure 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 FlowReynolds Number and Friction Factors





Gas Z-factor, Viscosity & Specific Gravity for a given Composition

Gas Z-factor & Viscosity for a given Specific gravity



Forces on a pipe bend

Heat TransferShell & Tube Heat Exchanger: Corrected LMTD

VibrationsCritical Speed of a Multi-Rotor System

MetalworkingHardness-To-Hardness Conversion

Sheet metal Bend Deduction & Allowance



Beam FlexureSimply-supported beam with concentrated Force at intermediate point

Simply-supported beam with concentrated Couple at intermediate point

Simply-supported beam with Uniform Distributed load

Simply-supported beam with Triangular Distributed load

Simply-supported beam with Twin concentrated Forces

Simply-supported beam with Single overhang and concentrated Force at free end

Simply-supported beam with Single overhang and uniform Distributed load

Simply-supported beam with Double overhang and concentrated Forces both ends

Simply-supported beam with Double overhang and Distributed load

Simply-supported beam with Multiple and Varied loading: I

Simply-supported beam with Multiple and Varied loading: II

Cantilevered beam with concentrated Force at intermediate point

Cantilevered beam with concentrated Couple at intermediate point

Cantilevered beam with Uniform Distributed load

Cantilevered beam with Triangular Distributed load

MiscellaneousUnits Conversion Calculators


Petroleum Engineering Calculators



Structure ISimply-supported beam with concentrated Force at intermediate point

Simply-supported beam with concentrated Couple at intermediate point

Simply-supported beam with Uniform Distributed load

Simply-supported beam with Triangular Distributed load

Simply-supported beam with Twin concentrated Forces

Simply-supported beam with Single overhang and concentrated Force at free end

Simply-supported beam with Single overhang and uniform Distributed load

Simply-supported beam with Double overhang and concentrated Forces both ends

Simply-supported beam with Double overhang and Distributed load

Simply-supported beam with Multiple and Varied loading: I

Simply-supported beam with Multiple and Varied loading: II

Cantilevered beam with concentrated Force at intermediate point

Cantilevered beam with concentrated Couple at intermediate point

Cantilevered beam with Uniform Distributed load

Cantilevered beam with Triangular Distributed load

Structure II Fixed Frame With Concentrated Force At Any Point On Girder

Hinged Frame With Concentrated Force At Any Point On Girder

Fixed Frame With Distributed Force On Girder

Hinged Frame With Distributed Force On Girder

Fixed Parabolic Arch With Concentrated Force

Two-Hinged Parabolic Arch With Concentrated Force

Fixed Parabolic Arch With Distributed Force

Two-Hinged Parabolic Arch With Distributed Force

Triangular Truss Under Concentrated Forces

Bridge Truss Under Concentrated Forces

Cantilever Truss Under Concentrated Forces

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

Structure IIIConcrete Mix Job

GeotechnicalPhysical Properties of Soils

Stresses In Soils Due To Concentrated Surface Load

Soil Consolidation And Settlement

Transportation

HydraulicsReynolds Number and Friction Factors





Forces on a pipe bend

HydrologyGroundwater flow to a well

Trapezoidal Open-Channel Flow



MiscellaneousUnits Conversion Calculators



Petroleum Engineering Calculators


General pH & pOH Of Aqueous Solution

Cell Growth

Nucleic Acids Concentration Of Nucleic Acids

Molecular Weight of DNA Molecule

Polymerase Chain Reaction Melting Temperature of DNA Strand

Proteins Protein Quantification

CentrifugationRelative Centrifugal Force

Sedimentation Time

Measurement UnitsParticulate Density Units Conversion

MiscellaneousNanotechnology Calculators

Chemistry Calculators

Chemical StructureMolecular Modeling

Particle PropertiesSurface Areas & Volumes

Aerodynamic Diameter

Settling Velocity

ProcessingEnergy Requirement In Size-Reduction Operation

Measurement UnitsParticulate Density Units Conversion

MiscellaneousChemistry Calculators


MechanicsVector addition

Newton's laws of motion

Equilibrium of rigid body under coplanar forces

Simple machines

HeatThermal expansion

Kinetic theory

SoundSpeed of sound in gases

Doppler Effect

ElectricityAlternating current

Electric fields

LightReflection & Spherical Mirrors

Lensmaker's Equation

NuclearHydrogen atom energy levels

Nuclear Fission



MiscellaneousChemistry Calculators


Other Calculators

Atomic StructurePeriodic Table of Elements

Formulas&CompositionHydrochloric Acid Preparation

GasesMolar Mass of a gas

CalorimetryHeat & Change Of Phase Of Water

Concentration&SolutionsDilution Of Solutions

Osmotic Pressure

Acids & BasesAcid-Base Titration

Equilibrium Constant

ElectrochemistryFaraday's Laws of Electrolysis

Chemical KineticsArrhenius equation & Reaction rates



MiscellaneousChemical Engineering Calculators

Physics Calculators

Other Calculators

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