tag:blogger.com,1999:blog-69299806857852787612024-03-05T12:40:22.758+03:00Ong LW's SiteA site where you can find some free apps for Petrophysicists and Log AnalystsAdvanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-6929980685785278761.post-77189784350567062922012-07-08T11:01:00.003+03:002017-10-12T03:30:44.890+03:00Shale Gas In Place Calculation<div dir="ltr" style="text-align: left;" trbidi="on">
Original shale gas in place calculation consists of two volumes, desorbed gas and free gas volume. Desorbed gas volume can be estimated from the core measurement of total organic carbon (TOC) and gas content (Gc). Refer to my previous post for the determination of TOC with wireline logs. The correlation of TOC and Gc from lab measurement gives the gas content as input for the desorbed gas volume calculation.<br />
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Desorbed gas volume = Gas Content * Shale Density * Thickness * Area<br />
Free gas volume = Effective Shale Porosity * (1-Sw) * Thickness * Area<br />
Total Shale Gas Volume = Desorbed gas volume + Free gas volume <br />
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* most cases, free gas volume refers to tight gas volume or gas volume from interbeded sand layers.<br />
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<a href="https://1drv.ms/u/s!AlPn9kC8z9NkauGqNuCQOvTuuTo" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9NkauGqNuCQOvTuuTo</a></div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-39550315636268670252012-07-05T10:19:00.005+03:002017-10-12T03:32:44.557+03:00Total Organic Carbon (TOC) calculation from well logs<div dir="ltr" style="text-align: left;" trbidi="on">
This app allows you to estimate TOC content for source rock, using EXXON method, published by Passy et. al. (1990). TOC is critical parameter for quantifying unconventional reseources, CBM or Shale gas. The adsorbed gas content is a correlation with TOC, derived from lab measured data.<br />
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The estimated TOC is best to calibrate with lab measurement by adjusting the Level of organic maturity,LOM. Vitrinite Reflectance (Ro) from lab may be available to derive LOM with graph below.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIDFSsp6r79LjXXfEIqOSkMK_WbpsKl27M1V6CJ0wnvXpQ6FSQwGtNZsx17e_8HNDXjc620mGp5tyw6pWKbeeH8ep0tCeyhEDjcQhKRYZrlgJk86YIX8FBk8nrSizdwXLlxB1Y1w5cmlw6/s1600/LOM.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="216" sca="true" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIDFSsp6r79LjXXfEIqOSkMK_WbpsKl27M1V6CJ0wnvXpQ6FSQwGtNZsx17e_8HNDXjc620mGp5tyw6pWKbeeH8ep0tCeyhEDjcQhKRYZrlgJk86YIX8FBk8nrSizdwXLlxB1Y1w5cmlw6/s320/LOM.gif" width="320" /></a></div>
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Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com2tag:blogger.com,1999:blog-6929980685785278761.post-54564480953829295502012-06-28T08:42:00.002+03:002017-10-12T03:33:45.020+03:00Hydrostatic Pressure Calculator<div dir="ltr" style="text-align: left;" trbidi="on">
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.<br />
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<a href="https://1drv.ms/u/s!AlPn9kC8z9NkbbUJwf_HsAzUkCI" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9NkbbUJwf_HsAzUkCI</a></div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-48945156318140887632012-06-26T12:36:00.000+03:002017-10-12T03:30:59.536+03:00Water Resistivity - Salinity - Sigma Calculator<div dir="ltr" style="text-align: left;" trbidi="on">
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. <br />
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Water sigma is normally required for sigma Sw calculation, with pulsed neutron sigma measurement.<br />
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<a href="https://1drv.ms/u/s!AlPn9kC8z9NkabF3Fs2h6K6J9YU" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9NkabF3Fs2h6K6J9YU</a><br />
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Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com2tag:blogger.com,1999:blog-6929980685785278761.post-5447008638991015952012-06-26T11:08:00.003+03:002017-10-12T03:34:54.699+03:00Gas Properties Calculator<div dir="ltr" style="text-align: left;" trbidi="on">
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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.</div>
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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).</div>
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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.</div>
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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.</div>
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<a href="https://1drv.ms/u/s!AlPn9kC8z9NkbFJZ8X3CeU0g4Ho" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9NkbFJZ8X3CeU0g4Ho</a><br />
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Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-5013214913915061722012-06-15T15:37:00.003+03:002012-06-15T15:46:17.057+03:00.Net Framework Initialization Error<div dir="ltr" style="text-align: left;" trbidi="on">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.<br />
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<div style="margin: 0in 0in 0pt;"><span style="font-family: Calibri;">Microsoft .NET Framework 4 (Standalone Installer): </span><a href="http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=0a391abd-25c1-4fc0-919f-b21f31ab88b7"><span style="color: blue; font-family: Calibri;">http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=0a391abd-25c1-4fc0-919f-b21f31ab88b7</span></a><span style="font-family: Calibri;"></span></div><div style="margin: 0in 0in 0pt;"><br />
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Volume conversion table is now ready for download. Feel free to send your comments after trying.<br />
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Download link<br />
<a href="https://1drv.ms/u/s!AlPn9kC8z9Nka2WaHxnyjO3XsQM" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9Nka2WaHxnyjO3XsQM</a></div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-12780077881327247522012-06-14T08:44:00.004+03:002017-10-12T03:38:40.815+03:00NMR Calculator<div dir="ltr" style="text-align: left;" trbidi="on">
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.<br />
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Use this apps to cross check with logging company pre NMR job planning.<br />
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Download link<br />
<a href="https://1drv.ms/u/s!AlPn9kC8z9Nkb1mzqIxq0uaWSR8" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9Nkb1mzqIxq0uaWSR8</a></div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-15651859423544707852012-06-13T12:10:00.000+03:002017-10-12T03:39:20.834+03:00Density - Salinity Converter<div dir="ltr" style="text-align: left;" trbidi="on">
Adding the released salinity-density converter. Check the download link below.<br />
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<a href="https://1drv.ms/u/s!AlPn9kC8z9NkcbV1m4HvFjfNxqA" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9NkcbV1m4HvFjfNxqA</a></div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-66075181135902113212012-06-13T09:14:00.001+03:002017-10-12T03:40:05.187+03:00Fluid Pressure Gradient Converter<div dir="ltr" style="text-align: left;" trbidi="on">
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.<br />
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Download link<br />
<a href="https://1drv.ms/u/s!AlPn9kC8z9Nkbk7eA8uPKbP7fsY" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9Nkbk7eA8uPKbP7fsY</a></div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0tag:blogger.com,1999:blog-6929980685785278761.post-7973578334387985682012-06-11T12:25:00.001+03:002017-10-12T03:41:28.927+03:00Resistivity - Salinity Converter<div dir="ltr" style="text-align: left;" trbidi="on">
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.<br />
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The download link<br />
<a href="https://1drv.ms/u/s!AlPn9kC8z9NkcP1KzwMO1tWvzsA" rel="nofollow">https://1drv.ms/u/s!AlPn9kC8z9NkcP1KzwMO1tWvzsA</a><br />
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The latest updated version is available, please check my latest post.</div>
Advanturehttp://www.blogger.com/profile/17267561947895600162noreply@blogger.com0