Contact Sales
Sign Up Log In

Using a Preliminary Sw in the Mineral Inversion

PetrophysicsJuly 30, 2025

In this video I cover how to iterate through the mineral inversion module to arrive at a more sophisticated solution for the porosity.

The workflow for this is as follows:

  1. Perform a standard interpretation that goes through:
    • Badhole ID & Repair
    • Clay Volume
    • TOC Analysis
    • Mineral Inversion
    • Porosity (make sure to use a Min. Solver Porosity method)
    • Water Saturation
  2. Run a flow to export the BVWT and BVHC (optional)
  3. Add the BVWT and BVHC (optional) to the mineral inversion
    • Make sure to adjust the uncertainty until you are satisfied with fit
    • Decide if you want to disable the conductivity
  4. Update the Porosity module to use the Min. Solver Porosity strict
  5. Update the Saturation interpretation
  6. Repeat the process ad nauseum

Note that BVHC is optional. There are two reasons for this. First, using just BVWT should do everything you need it to. Second, if you have both an oil and gas phase you would really need to have a bulk volume oil and a bulk volume gas – which we normally don’t have. Therefore, if you have more than one hydrocarbon phase in a formation utilizing just the BVWT as an input would be considered best practice.

Tags

Related Insights

DCA

DCA: Type well curves

In this video I demonstrate how to generate a well set filtered by a number of criteria and generate a multi-well type curve. Before starting this video you should already know how to load your data and create a DCA project. If not, please review those videos. Type well curves are generated by creating a decline that represents data from multiple wells.

July 29, 2025
DCA

DCA: Loading Production data

In this video I demonstrate how to load production and well header data for use in a decline curve analysis project. The first step is to gather your data. You’ll need: Production data – this can be in CSV, Excel, or IHS 298 formats. For spreadsheet formats you’ll need columns for API, Date, Oil, Gas, Water (optional), and days of production for that period (optional). Well header data – this can be in CSV, Excel, or IHS 297 formats.

July 29, 2025
General

Sample data to get started

Need some sample data to get started? The files below are from data made public by the Wyoming Oil and Gas Commission. These will allow you to get started with petrophysics, mapping, and decline curve analysis. Well header data Formation tops data Deviation survey data Well log data (las files) Production data (csv) or (excel) Wyoming counties shapefile and projection Wyoming townships shapefile and projection Haven’t found the help guide that you are looking for?

July 9, 2025by Cameron Snow

Get a Personal Demo

Unlock the subsurface with Danomics