Hydrostatic Pressure Calculator

This app allows you to calculate the hydrostatic pressure of a fluid column. Fluid density (mud weight) and depth are required for the calculation. You can use this apps to cross check the formation tester hydrostatic pressure.

https://1drv.ms/u/s!AlPn9kC8z9NkbbUJwf_HsAzUkCI

Water Resistivity - Salinity - Sigma Calculator

This is the updated version of RwCal. The calculation of neutron captured sigma of water is included. You can use this calcualtor in converting Resistivity - Salinity - Sigma.

Water sigma is normally required for sigma Sw calculation, with pulsed neutron sigma measurement.


https://1drv.ms/u/s!AlPn9kC8z9NkabF3Fs2h6K6J9YU

Gas Properties Calculator

This calculator enable you to estimate gas density, specific gravity, compressibility and viscosity. The input required is reservoir pressure and temperature. Molecular weight for natural gas range from 17-20 g/mol, and this calculator uses 19.5 g/mol for natural gas. Methane molecular weight of 16.043 g/mol is also used.

The gas compresibility factor Z, is computed using the CNGA (California Natural Gas Association) correlation, which is suitable for pressures above 100 psig (below 100 psig, the compressibility factor is 1).

Gas viscosity calculation is based on the Lee, Gonzalez and Eakin correlation, which only requires the pressure, temperature and molecular weight of the natural gas.

You can run this calculator for gas properties as input to the NMR calculator for gas T1, D and Tw estimation for pre logging planing.

https://1drv.ms/u/s!AlPn9kC8z9NkbFJZ8X3CeU0g4Ho

.Net Framework Initialization Error

If you have an error while running the apps, showing ".Net Framework Initialization Error", please install the latest .net framework 4.0 in your machine.

Microsoft .NET Framework 4 (Standalone Installer): http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=0a391abd-25c1-4fc0-919f-b21f31ab88b7

Volume Conversion Table

Volume conversion table is now ready for download. Feel free to send your comments after trying.

Download link
https://1drv.ms/u/s!AlPn9kC8z9Nka2WaHxnyjO3XsQM

NMR Calculator

NMR calculator allows you to have an independant (non tool related) calculation of longitudinal relaxation time, T1 and diffusion coefficient, D. The logging parameter of tool wait time, Tw is also estimated. Tw is critical to avoid NMR underpolarization which can undercalling NMR porosities.

Use this apps to cross check with logging company pre NMR job planning.

Download link
https://1drv.ms/u/s!AlPn9kC8z9Nkb1mzqIxq0uaWSR8

Density - Salinity Converter

Adding the released salinity-density converter. Check the download link below.

https://1drv.ms/u/s!AlPn9kC8z9NkcbV1m4HvFjfNxqA

Fluid Pressure Gradient Converter

PresGrad_Convert is a home made handy apps for converting fluid pressure gradient in different units. Feel free to download and let me know if any comments.

Download link
https://1drv.ms/u/s!AlPn9kC8z9Nkbk7eA8uPKbP7fsY

Resistivity - Salinity Converter

RwCal is a handy resistivity-salinity converter, which allow you to calculate Rw and salinity. Feel free to download it and share your experience with me.

The download link
https://1drv.ms/u/s!AlPn9kC8z9NkcP1KzwMO1tWvzsA

The latest updated version is available, please check my latest post.