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Production Data - Monthly Data

This page goes through the details of working with monthly data.

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When Should I Use the "Monthly Data (Supplemental)" Tab?

The Supplemental Monthly Data tab is intended for co-visualization within decline curve analysis (DCA) workflows. Users should use this tab when they want to overlay additional rate data—such as monthly oil, gas, and water rates—on top of the main production dataset to assist with visual interpretation while generating DCAs, type wells, or auto-forecasts.

  • The software works perfectly with monthly production data entered in the main Production Data tab. There is no need to use the supplemental tab for this purpose, as is there to help you visually compare or overlay secondary data streams during DCA workflows.

Important notes:

  1. Only rate data can be entered here (no pressures).
  2. The official production data must still be entered in the Production Data tab for it to be included in modeling workflows.

This tab exists purely to give engineers enhanced visual context during decline analysis—it is not a substitute for production data entry and is not used for any calculations.

The monthly data can also be used to influence the calculations in DCA. If "Fit On" is selected as monthly, the autofit will use monthly data in the fitting algorithm rather than daily.

Note

The historical cumulative production could potentially be different when fitting on monthly as well.

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Overview

The software allows manual editing of all monthly data inputs. Users can view, enter, or adjust monthly measurements directly in the platform.

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  1. Date: production data recording date
  2. Stock Tank Rate Units

Parameter Description Field Units SI/Metric Units Field/Metric (Canada) Units SI/Metric (Canada) Units Argentina Units
qo Oil production rate measured at the stock tank STB/d Sm/d STB/d Sm/d Sm/d
qg Gas production rate measured at the surface Mscf/d 10Sm/d Mscf/d 10Sm/d 10Sm/d
qw Water production rate measured at the stock tank STB/d Sm/d STB/d Sm/d Sm/d

Table 1. Stock tank flow rate units available in whitson+.

3. Days On: indicates the number of days the well was actively producing within the given timestep. Leaving it blank assumes the well produced for the entire timestep.

1. How to Add Supplemental Production Data and Co-Visualize

co-visualization

  1. In the Production Data module, click the MONTHLY DATA (SUPPLEMENTAL) tab at the top.
  2. Click UPLOAD to upload data.
  3. Copy and paste the data in the relevant columns.
  4. Click SAVE in the lower left when finished.
  5. Go to the Decline Curve Analysis module.
  6. Click CO-VISUALIZE in the top right of the Rate-time decline plot.
  7. All steps are shown in the .gif above.

2. How to Upload

There are two ways to upload production data into whitson+:

  1. Manual upload: copy and paste production data into the frontend.
  2. Datadump pre-populated files (Excel or CSV).

2.1. Manual Upload

2.1.1 Upload Data

delete

  1. Click UPLOAD.
  2. Copy and paste the data in the relevant columns.
  3. Click SAVE in the lower left when finished.
  4. All steps are shown in the GIF above.

Remember

  1. The functionality is very similar to Excel, so a good rule of thumb is: "If it works in Excel, it works here."
  2. Just upload the data you have available; skip the rest.

2.1.2. Datadump Pre-Populated Excel File

datadump

  1. Click the UPLOAD option at the top right of the screen.
  2. Click the DATADUMP option at the top of the dialog box.
  3. Drag and drop the pre-populated datadump file into the frontend or select it from your files after clicking the box.
  4. If you do not have the template, download it by clicking "Download Excel Template" in the bottom left corner.
  5. Click SAVE in the lower right when finished.
  6. All steps are shown in the figure above.