Business Intelligence Tools / Geology & Geoscience

Including Point Sets in 3D Subsurface Visualization

A point is a spot in space. In the world of geologic mapping, or mapping in general, it is represented by co-ordinates: X, Y on a plane; and X, Y, Z in 3-dimensions.

Using 3D Subsurface Visualization, it is easy to identify/add a point in a spatial environment for reservoir management or geologic applications – marking a pick location of interest. A point can be marked along a wellbore, on a surface, in a seismic imagery, or in an empty space. What defines the positioning of a point is its X, Y, Z co-ordinates.

In this post, I will provide information on how to add marker point(s) on a wellbore in the 3D Subsurface Visualization.

Consider the well with the following position data stored in a data table in Spotfire:

In 3D subsurface, the well trajectory is represented as shown below:

Suppose we are interested in the point on the wellbore with coordinates X = 1418499.99, Y = 864182.45 and Z = -6609.18. Then we would create a Point object in the 3D Subsurface Visualization that is limited by the marking implemented on the visualization containing the said coordinates.

So first, we use a cross-table to show all points along the wellbore such that the spot with coordinates X = 1418499.99, Y = 864182.45 and Z = -6609.18 can be marked as shown:

Next, we setup and configure Point Set on the 3D visualization using the following steps:

  1. Open the Properties dialogue window of the 3D Subsurface Visualization, click Add and click Point Set to add point object

  2. A point class is added under layers. Select the point to open its properties. In the Data tab, select the data table that contains the position data for the point of interest in the Data table drop list. If you want click-action on any point in the 3D Subsurface Visualization to drill down data in another visualization, then set the Marking drop-down list to a marking, else select “None”. In the Limit data using markings control, select the marking that is implemented on the cross-table visualization above. In the image below, the name of the marking is “PointSetMark”.

  3. Apply filtering scheme to the point by selecting Filtering Scheme from the Limit Data Using Filtering list box.
  4. In the Positioning tab, select the columns in the data table in 2 above containing x, y, and z coordinate data in the X-column, Y-column, and Z-column drop-down controls respectively as shown in the image below

  5. Move the Radius slider to specify how large you want the point to be within the 3D Subsurface Visualization space
  6. In the Colors tab, select a column in the data table in 2 above by which you want to color the point(s). It is possible to column to color points by depth, or any other value. You can also color all points by the same color. For the latter, choose Remove in the Color by drop-down. In the image below, the points are colored by well UWI (unique well identifier) – this means that for each well, there is a different point color. Also, colors can be applied to points in two modes: gradient and fixed. In Gradient mode, the color is applied based on continuous data. Fixed colors are the same for every object selected in the Color by drop-down list.

  7. To make a point transparent or opaque, move the Transparency slider left and right as desired
  8. Click Close button.

The marked point with coordinates X = 1418499.99, Y = 864182.45 and Z = -6609.18 appears on the wellbore as shown in the figure below:

Because the points on the wellbore are driven by marking, we can identify many points by simply marking more rows in the position coordinates cross table. The following video illustrates:

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