Danomics Petrophysics Insights offers mapping and cross-sections as ways to visualize results and QC work. Both tools are powerful methods for finding and correcting errors on a well-by-well basis.
Maps are made on a zone-by-zone and property by property basis, with all maps being created for all zones, which allows users to quickly QC multiple zones and properties . Several maps are included in the default set-up and users can extend the set of maps generated by utilizing the CPI Config.
To get started with maps, in the Databases pane, click the checkbox for show property map. This will result in two additional dialogue boxes appear – one for zone and one for the property to display.
Once you select a zone and property, maps will be generated for all properties for all zones. This generally takes 10-30 seconds in total and the status will be tracked in the Jobs queue. Note that for larger mapping jobs the calculation activates a new virtual machine, which will run your map creation. The first time this is done, the virtualization process can take a few minutes to initialize, with subsequent runs being faster.
You can continue working while the map generates in the background as the process is ran in parallel in the cloud. One the maps are generated the selected one will appear in the map area.
At present all gridding, contouring, and color scales are done automatically using program defaults as these maps are intended to assist in the QC process and not for final displays. Maps are automatically clipped to the extent of the data for that property. Therefore, you will likely see a larger map area with more detail for low-level properties like isopach maps and Vclay averages than for high-level maps like OOIP.
The following maps are generated by default:
- structure maps – TVD maps based on well tops
- isopach – Zone thickness as based on well tops. Performed on a “next-top” basis.
- gross_res_summary – Thickness of Gross Reservoir within a zone
- net_res_summary – Thickness of Net Reservoir within a zone
- net_pay_summary – Thickness of Net Pay within a zone
- phit_net_res – Average Total Porosity within intervals flagged as Net Res
- phie_net_res – Average Effective Porosity within intervals flagged as Net Res
- sw_net_res – Average Water Saturation within intervals flagged as Net Res
- vwcl_net_pay – Average Vclay within intervals flagged as Net Pay
- phit_net_pay – Average Total Porosity within intervals flagged as Net Pay
- phie_net_pay – Average Effective Porosity within intervals flagged as Net Pay
- sw_net_pay – Average Water Saturation within intervals flagged as Net Pay
- hcpv_summary – Hydrocarbon Pore Volume (PhiE*H*[1-Sw])
- phih_summary – Porosity Thickness (PhiE *H)
- ooip – Original Oil In Place per unit area (see Volumetric Analysis plot)
- ogip – Original Gas in Place per unit area (see Volumetric Analysis plot)
- max_cont_net_res – Thickness of the maximum continuous Net Reservoir Interval
- max_cont_net_pay – Thickness of the maximum continuous Net Pay Interval
- frac_package_summary – Thickness of the maximum continuous Interval from Reservoir Continuity Analysis Module for Net Pay only
- gr_norm_rms – Root mean squared of normalization of GR between key well and non-key well
- sp_norm_rms – Root mean squared of normalization of SP between key well and non-key well
- resd_norm_rms – Root mean squared of normalization of Res Deep between key well and non-key well
- nphi_norm_rms – Root mean squared of normalization of Nphi between key well and non-key well
- rhob_norm_rms – Root mean squared of normalization of RhoB between key well and non-key well
- dt_norm_rms – Root mean squared of normalization of DT between key well and non-key well
The list of maps can be extended via the CPI Config. If you need help doing this, please contact us at firstname.lastname@example.org.
To avoid having the maps refresh while working, they remain static until (1) the user hits the refresh button, (2) the user changes the map they want to display, or (3) the user closes and re-opens a project.
If a “problem” well cannot be fixed via overrides to parameters (for example due to bad or missing data) you can omit the well from the map via a single button click. This does not delete the well or its data, but simply excludes it from the mapping.
To show a geological cross-section simply click on the Cross Section tab at the bottom of the well log display panel. This will automatically generate a cross-section as shown below:
All wells are automatically selected and ordered. The cross-section line will appear on the map and the segment shown in the cross-section panel will be highlighted in red.
You can jump to a well in the cross-section by clicking it in the map and vice-versa. This makes the cross-section tool ideal for QC’ing suspected problem wells.
The user has options for how to order the wells. There are three methods for ordering the wells, and the “Serpentine” method has options for setting the orientation and the “buffer” for how to assign wells to a segment of the line. This is best visualized by clicking on options and selecting “Show track boxes”.
Tops can be modified by dragging and dropping. To select the same top in multiple wells, right click and select the “Capture” option, which will allow you to pick tops from well to well. To turn off, right click and click “Cancel Capture”.
Hints & Tips
Cross-sections can be shown in structural or stratigraphic views. Just choose the “Flatten on:” method you want using the dropdown menu at the top of the cross-section window.
There is an option to map zones based on data coverage. In the “Interpretation” module in the “Advanced” options, you can choose to Map Partial Zones. If selected, zones that are missing data will still be mapped. If not checked, zones with missing data (null values) will not be utilized in the mapping.