Ellipse display settings

You can change the display settings for ellipses on wells. You can change the ellipses manually or based on zones, and you can select whether to draw an ellipse or a rectangle. For all ellipses and rectangles, you can change the line color, line style, line weight, and fill color of each ellipse. For all ellipse layers, you must provide a name for the layer.

You can define the shape, size, and orientation of the ellipse manually or by using zone attribute values. Manual settings are available on the Manual tab and zone settings are available on the From Zone tab. The settings that Spatial Explorer uses are determined by which tab is selected when you click OK.

Change display settings manually

For a well ellipse, you can specify the length of each of the two axes of the ellipse in either feet or meters, and you can change the compass orientation of the longer axis to change the alignment of the ellipse on the map.

Change display settings based on zone attributes

You have the option to define the shape, size, and orientation of well ellipses based on zone data. Spatial Explorer enables you to define a drainage area (Drainage Area tab), the ratio of the major axis (height) to the minor axis (width) of the ellipse or rectangle (A/B Ratio tab), and the orientation of the ellipse or rectangle on the map (Orientation tab).

Drainage Area tab

You can define the area of the ellipse or rectangle based on the value of a zone attribute, and you can specify the unit of measure for this area (acres, hectares, square feet or meters). You can also specify a minimum and maximum value range and ignore any data that falls outside that range.

If you need to review the data available in your zones and zone attributes to select the correct data, click Zone Data.

A/B Ratio tab

Use the A/B Ratio tab to define the ratio of the major axis (height) to the minor axis (width) of the ellipse or rectangle.

For the rectangle ellipse layer, axis 2, the width along the borehole, is scaled by pi/4 ≈ 0.785 so that the Ellipse and Rectangle shapes have the same area. The Ellipse area = pi * (a/2) * (b/2). The Rectangle area = a * b. To make these match, axis b of the rectangle ellipse is scaled by pi/4 so the rectangle area is now a * b * (pi/4)

You can use a zone attribute value, which you can also multiply by a value you specify in the Multiply Factor field (for example, .5 or 2). If you select a zone attribute, the zone attribute used for the major axis (either the zone attribute used for the drainage area or the one you picked for the A/B ratio) depends on the comparative values of these two attributes and any multiplication factor you provide.

You can also specify a constant for the ratio of the major and minor axes. For example, if you specify a value of 2 in the Constant field, the ratio of the major axis to the minor axis is 2:1. If you specify a constant value and also a multiplication factor, the two values interact to produce the final value. For example, if you specify a constant value of 2 and a multiplication factor of 2, the ratio of the major axis to the minor axis will be 4:1 (2 x 2 = 4).

Orientation tab

You can specify the compass orientation of the ellipse based on a zone attribute value, or you can specify a value in the Constant field. The default value is 0, which aligns the major axis of the ellipse vertically on the map.