Web App Triple Combo Plotter

Following the article, I wrote couple days back on how to make an easy yet customizable triple combo plot out of LAS file data.

If you like my last article, You are in for a treat.

Because now, I make a web app based on the same notebook I wrote on the github. The web app is built upon the streamlit library. The experience is superb, I would highly recommend you to build your web app using this if you want to make your first.

The web app is similar in a way that it is customizable to a certain degree (trying to not make it too overwhelming) in comparison to the notebook. Nevertheless, the web app can be accessed via this link: www.plotpetrophysics.xyz. Let me run through step by step, and highlighting some features I like in this web app:

1- First, there will be an error message, in the beginning, Do Not Worry. Upload your file, and it would quickly disappear!

2- Once the LAS file is uploaded, you will be able to see;

• the LAS file in the interactive data frame format (fancy name for excel sheet in Python). Here, you can freely scroll through the rows and columns to see what is the expected curves you want to plot (this is important).
• the Plot setting sidebar, to adjust all settings of the plot including scale, colors on each track, and curve.

3- Before jumping into the Sidebar Setting, first select the curves based on the drop-down list. You will have to pick four curves in order to display the triple combo plot correctly. B default it will pick up the first column after index. So make sure you pick a correct curve based on the remark above the bar.

4- After selecting all curves, quickly glance at the plot created, to see whether you need to make some adjustments to the plot setting or not. In the above example, you could see that we would probably need to zoom in the depth and adjust the resistivity scale a bit for a better view.

5- With a bit of adjustment, above is the plot that we can quickly use to analyze the well. Looks like we hit a reservoir zone from the 8600-8900ft, and probably a pay zone around the 8600-8700ft section (although could also be a tight section)? A Water zone across 8800ft, and another pay just below it? so on, so forth...

6- Last but not least, as I said, you can have fun and change the color as you like. And if you finished with the plot, right-click to save the image. I was not able to deliver the pdf download button at the moment (perhaps for another day!!).

Learned a lot about coding on this project (a fun exercise too), detail on the project as always is available under GitHub: https://github.com/ariewjy/triple_combo_web_plotter. The LAS file I used is the same LAS file I used for the previous article (also available under the repo).

Till next time,

A.A.W.