PetroSimple Apps

About This AppSimple Gas Properties computes the natural gas properties infieldunits. It requires the Gas Specific Gravity (Sp. Gravity),pressureand temperature at which the gas was sampled. It alsoaccounts forthe non-hydrocarbon effects on the Z-factor.Technical DescriptionSimple Gas Props uses the following methods:1. Sutton correlations to find pseudocritical temperatureandpressure.2. Wichert and Aziz method to account for H2S and CO2molfractions3. Z-factor is calculated using the user choice of either:a. Hall and Yarborough correlationb. Dranchuk and Abou-Kassem correlation4. Gas compressibility (Cg) is calculated from real gas equationofstate using the calculated Z-factor. It has the unitsof1/psi.5. Gas formation volume factor (Bg) is calculated from realgasequation state assuming surface pressure of 14.7 psiaandtemperature of 60F. Bg has the units of reservoir cubic ftbystandard cubic ft.6. Gas molecular weight (MW) is calculated from thespecifiedspecific gravity, and assumes molecular weight of air=28.97.7. Gas viscosity (μg) is calculated in the field units ofcentipoise(cp) using the user choice of:a. Lee et al. correlationb. Carr et al. with Dempsey correlation8. Gas density (ρg) is calculated from the real gas equationofstate using the computed Z-factor. It has the units of poundspercubic feet.About PetroSimplePetroSimple Group is a dynamic startup owned by Fahd Siddiqui.Fahdis a petroleum engineer and an app developer, designingengineeringapps for quick calculations on the go.The use of this app is for educational purposes only andshouldnot be relied upon for custody transfer or legal contracts."SimpleGas Properties" is protected under the copyright law.

Calculate flowing gas bottom hole pressure

About This App This app computes the gas flow rate using theorifice plate energy equation. The app follows the standardprocedure described in ISO 5167-2. The orifice dischargecoefficient is calculated using the Reader-Harris/Gallagher (1998)equation. This app requires the pipe diameter (D), orifice diameter(d), upstream pressure (P1), the differential pressure across theorifice (P1-P2), downstream temperature (T), gas specific gravityand gas isentropic expansion factor/heat capacity ratio (k=Cp/Cv).The user has the option of specifying the units for each, hence thevalues can have any mix of units. The tap location can be selectedfrom the ISO 5167-2 specified: Flange Taps, Corner Taps, D and D/2Taps and an option to specify manual tap locations. The Flange Tapsstandard measures the pressure and differential at 1inch intervalsfrom the orifice plate on either side. The Corner Taps are locatedjust upstream and downstream of the orifice plate. The D and D/2Taps are located at a distance of pipe diameter on the upstreamside and half pipe diameter distance on the downstream side of theorifice plate. Even though the user can manually specify thesedistances as well it is not recommended as it is not covered by theISO 5167-2 standard. In general large deviations from the standardvalues will produce a larger uncertainty. The correlations forcomputing Z-factor and viscosity can be changed by selectingSETTINGS from the MENU. It is also possible to use the Square RootCircular Flow Recorder Chart readings by first converting them. Theapp can convert the chart readings by clicking the "USE CHART"button. The readings can be converted as well as substituted forpressure, differential pressure and temperature for onwardcalculation of gas flow rate. The results of calculation aredisplayed in SI/Filed units. This app computes the volumetric gasflow rate at standard conditions of 60F and 14.7 psia for fieldunits and 0C and 1 atmosphere for SI units. The volumetric gas rateat pipe upstream conditions, mass flow rate and velocities throughthe pipe and orifice are also computed. The intermediatecalculations are also displayed for reference, such as Reynoldsnumber, orifice coefficient, gas Z-factor and gas viscosity. Moredetailed intermediate values are displayed in the text only report.The units can be switched between field and SI units by clickingthe "Change Units" button. Finally the report of the calculation isalso available in copyable tab delimited text form to paste into amobile word processor. The "Email Report" button launches thedefault android email app with the report in the text of the body.

This app computes the fluid propertiesofnatural gas using various correlations available in thepetroleumengineering literature.This app requires the gas specific gravity (γ), mol% of H2SandCO2. The calculations are made at the temperature provided andtherange of pressure specified. Optionally field or lab measuredtestpoint data can be entered to compare on the graphs ofPVTproperties in the output screen.The user can select the correlations to be used foreachparameter by clicking the CORRELATIONS button or selectingSETTINGSfrom the MENU.This app will compute the real gas Z-factor, gas,formationvolume factor, density, viscosity, compressibilityandpseudo-pressure for the pressure range and temperature specifiedinthe input screen. The resulting properties are plottedagainstpressure for visualization. The test point data is alsoplotted (ifprovided) for comparison. The graphs are interactivei.e. tappingthe lines pops out the values of that point.NOTE: In order to compute the correct real gas pseudopressure,ensure that the pressure range starts from 14.7 psia.Finally a report of the calculation is also available incopyabletab delimited text form to paste into a mobile wordprocessor.Clicking the "EMAIL REPORT" button launches the defaultAndroid mailapp with the report in the body of the email.

This app computes the fluid properties of petroleum oilsusingvarious correlations available in the petroleumengineeringliterature. This app requires the Stock Tank OilGravity; user hasthe option to specify the units of STO gravity,Gas SpecificGravity (γ), Solution Gas Oil Ratio at Bubble PointPressure (Rs)and Temperature (T) at which the PVT properties aresought. Theuser then selects the range of pressure for which thePVTproperties are to be calculated with a maximum number of stepssetto 30 (default). Optionally a field or lab measured test pointdatacan be entered to compare on the graphs of PVT properties intheoutput screen. The user can select the correlations to be usedforeach parameter by clicking the CORRELATIONS button orselectingSETTINGS from the MENU. This app will compute the solutiongas oilratio, formation volume factor, density, viscosityandcompressibility at the pressure range and temperature specifiedinthe input screen. The resulting properties are plottedagainstpressure for visualization. The test point data is alsoplotted (ifprovided) for comparison. The graphs are interactivei.e. tappingthe lines pops out the values of that point. Finally areport ofthe calculation is also available in copyable tabdelimited textform to copy to clipboard to paste into a mobile wordprocessor.The report can also be email to someone by hitting "EmailReport"to send the text report by email.