How to use Graphic Curve Splice option in GVERSE Petrophysics

Well logging can be done on multiple runs with a variety of tools, resulting in multiple curve sets in GVERSE Petrophysics. The Merge option can be used to view the full depth record and compare various curves, but if the depths differ between import sets with similar curves, Splice is the best option for creating a single curve set with all the curves for all depths.

The Merge option allows you to combine two or more curve sets with similar depth ranges but different curves, whereas Splice allows you to combine two or more sets of curves with similar depth ranges but different curves.

Splicing was done automatically or through curve editing in previous versions of GVERSE Petrophysics. When using the automatic option, imported curves are automatically merged and/or spliced during import, depending on the import options selected when importing curve data.

Automatic Merge/Splice During Import

For the second option, you go to the Curves tab, select Curve Editing, and finally click Merge/Splice. All curves are spliced at the same depth point in Splice operations. To define another splice depth, use the general fillet operation in the dialog box, and the depth can be adjusted by clicking the Curve Map button at the bottom of the dialog box, as shown in the image below.

Curve Editing After Import: Merge/Splice Option

While these options are still available, we have added a new splicing option in our recent releases named ‘Graphical Curve Splice’. This tool allows you to graphically splice curves from different logging runs into a single composite curve and display it as a new curve in the Log View of GVERSE Petrophysics. The composite curve is created from different input curves spliced together so that measurements are available over the greatest possible depth interval within a given wellbore.

Graphical Curve Splice Utility Interface

The workflow for using the graphical curve splice option is as follows:

In GVERSE Petrophysics, click the tool icon under the curve tab to open the new Graphical Curve Splice tool.
The composite curve is created by selecting any import curve set as the main curve and adding different import curve sets as input; by clicking the plus sign under Input Curves, you can select any import Curve Set, change the curve color, and create the output.

Selecting Desired Curve Sets & Curve Selection and Color Assignment

Select the input curve and drag it up and down the Splice Picker tool or up and down the top and bottom Spliced depth on the Log View window, changing the curve scale, step, zooming in and out, and so on. Splice curve(s) segment(s) will appear on the Spliced Curve.

After splicing the curves, save the output curve in a New curve set or an Existing curve set from the Spliced Output Curve group box. These spliced curves, once saved and set as field data, can be used in petrophysical analysis, cross sections as a curve template, or anywhere else in the software.

Spliced Curve Log View and Saving the New Spliced Curves