Calculators for Petroleum Engineers

The  on-line  computational  and  graphics  Calculators for  Petroleum   engineers   &  geologists  in:  
Drilling,  Reservoir  Engineering,  Production,  Geosciences  &  Economics.

AVAILABLE  CALCULATORS  (all free!)  - New ones are added periodically 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, μ, Bg and Sg for a given Composition Gas Properties - II: Z, μ, 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

Thanks to Dr. Haveluck Gbubemi Harrison   
MSc (Imperial), PhD (Heriot-Watt)   
E&P Information Management Consultant.