Attribute maps show which wells meet some data criteria.  Attribute maps can be set to show well header information, zone data items, digital and raster logs, or monthly production data.  Attribute map criteria includes whether data are present or absent, whether the data fits within a numerical range, or by a specific text or value search.

To add an attribute map, select the button on the toolbar at the top of the Map Module, or select Options>Attribute Map from the menu bar at the top of the screen.

Available Data Items

The Available Data Items list shows the possible items for the attribute map.  This includes: well header information, zone data items, log curves, monthly production data, or interval data.  To add an item to the attribute map, select the relevent item and click the associated button to add the item to the Selected Attributes list.

Selected Attributes

The Selected Attributes list sets the order of the attribute wedges, as well as controls the individual settings.  After adding the attribute from the available data items, use the "Settings" and "Colors" tabs to define the display parameters for the attribute. Use the button to remove an attribute from the list or the button to clear the list. Use the and  buttons to reposition the attributes in list and the relative position in the attribute symbol

General tab

The General tab controls a few settings that apply to the entire attribute map.

General

Suppress Legend - This option disables the screen legend showing the color and attribute description.

Drop Missing Segments - Check this option to drop segments when data does not meet the attribute "Show When" criteria on the Settings tab.

Suppress Outline - This option removes the outline of the attribute map circle.  This can reduce visual clutter, but also reduces the individual impact of a single attribute bubble.

Style

This option sets the overall style of the attribute map.  Options include a doughnut that leaves a hole for the sell symbol, or a pie that does not.

Circle Size (Diameter) and Units

Enter the diameter of the attribute symbol in either inches or map units. When the inches option is selected, the attribute symbols will always plot at the specified diameter regardless of zoom. When map units are selected, the attribute diameter when vary in size based on the map scale.

Settings

Save - This button saves the current attribute settings to an external *.ATT file.

Load - This button loads attribute settings from an external *.ATT file.  Note that this will replace all the current settings.

System Defaults - This button restores the system defaults and removes all attributes.

Settings tab

Data Is Present - This option shows the attribute when the well header data is non-blank, zone data is not null, or when a log exists for the well.

Data Is Missing - This option shows the attribute when the well header data is blank, zone data is null, or when a log does not exist for the well.

Active Vel Func - This option restricts the "Any Velocity Function" search (on the Well Header Items dropdown) to only include wells with an active velocity function.

Uncalibrated Rasters - This option restricts a raster log attribute map (either "Any Raster Log" or a specific raster log) to only rasters without depth calibration points.  This option will not affect non-raster log searches.

If Top Use SS Value - For a "Numeric Values" search on formation tops, this option uses the SS value rather than the MD value.  This option will not affect non-formation top searches.

Numeric Values

Data Is In Range - This option shows the attribute when a zone data falls within the specified range. Enter the range as a minimum and maximum value.

Text Header or Zone Values

Data Contains Value - This option shows the attribute when a well header text item contains the specified text value. This option is not case sensitive.

Data Does Not Contain Value - This option shows the attribute when a well header text item does not contain the specified text value. This option is not case sensitive.

Data Exactly Matches Value - This option shows the attribute when a well header text item exactly matches the specified text value. This option is not case sensitive.

Show Unique Values - When a data item is selected on the Selected Attributes List, this button displays a list of the unique values in that data item.

WSN List

This option limits the attribute map for the selected data item to only those wells on a wsn list.  This allows for attribute maps based on more complex, layered criteria. As an example, a WSN list can show wells that have a TD greater than 10,000’, have raster logs, and were drilled in 1973. To do this, use the Select Wells By Data Criteria `

Use Aliases - This option uses the relevant alias for the highlighted option on the Selected Attributes List.  This will use log and zone alias lists.

Disabled - This option disables the highlighted attribute on the Selected Attributes list.  Disabled attributes will have a sign next to them.

Colors tab

The Colors tab sets the color for the selected attribute on the Selected Attributes list.

Color - This dropdown sets the color the selected attribute from the color drop down list.  To change another attribute's color, select the relevant attribute on the Selected Attributes List on the lower left corner of the screen.

Randomize - This button randomizes the colors for each attribute.

Color Palette

This tool changes the colors in the "Color" dropdown above.  

Save - This button saves the current palette to an external *.ZPL file

Load - This button replaces the current palette with a palette from an external *.ZPL file.

Edit Palette - This button opens the Windows Color dialog box for modifying individual colors in the color dropdown list.

Default Palette -  This button restores the color palette to the Petra default.

Legend tab

This tab controls a little about the attribute legend that normally appears in the bottom left corner of the Map Module.

Use Default Title In Legend - This option just uses the default title for the legend.  This will just report a brief summary of the color and data criteria.

Override Title Using the Following Title - This option replaces the attributes legend with custom text specified in the entry box below.

Make Screen Legend Opaque Background - This option puts an opaque white box behind the attribute legend.

Include Well Counts for Each Item - This option adds a total count of the wells satisfied by the criteria.

Wells tab

The Wells tab adds an additional criteria to limit the attribute map to only wells on a WSN list.

All Wells On Map - This option does not restrict the attribute to a well list, and will draw attributes on any well on the map that meets the data criteria.  This is on by default.  

Only Wells Listed in WSN List File Below - This option restricts the attribute symbols to only wells in the WSN list in the entry box.  Wells that meet the data criteria but are not on the WSN list will not have attribute bubbles.

Auto Retain Well List of Posted Wells - This option keeps the well list in memory.  Without having to read the WSN list off the network or hard drive, Petra can redraw attribute maps slightly faster.

Save WSN File of Wells with Attributes - This option creates a new WSN containing the wells that meet the selected attribute.  It will save a new file ATTRMAP$$.WSN in the same location as the WSN file selected above.  Note that this will use the attribute selected on the "Selected Attributes" list on the lower left corner of the screen.