6.7 - Chart Properties
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The chart properties dialog allows the user to turn on depth labels by clicking the “Depth Labels” check box and labels will be displayed at the interval specified by the “label interval” edit box. “Start Depth” and “Stop Depth” can also be selected here, where only labels within this depth range are displayed.
Inclinations and azimuths can also be displayed by clicking the inclinations and azimuths check boxes, and these will be displayed alongside the depth labels at the same frequency. These labels can be added independently of the depth labels. It should be noted that if a large number of wells are displayed; turning on depth labels can drastically reduce chart zooming and scrolling performance.
This section allows the user to turn on various chart annotations, such as well names, lithology’s, annotations, casing symbols and plan sections. Plan Sections can only be displayed if the reference well is a plan and annotations, lithology’s, casing symbols and plan sections can only be displayed in section, plan, 3D and spider plots. If lithology lines are selected horizontal lines will be drawn across the plot at the depths of the lithology change. Lithology’s can only be displayed on section plots. Lithology Planes can only be displayed on 3D plots. Lease Line Intersections will display an annotation if a well crosses a lease line. They require a lease line to be set as a target for the reference well.
The warnings annotations if selected will show the warning levels defined at operator level on the separation factor plot. These are on by default in the separation factor plot.
This section allows the user to control properties which affect all chart labels. The style of the label can be changed to bold or italics and the default size of the label can be set here too. If the allow labels to be zoomed box is checked when the user zooms a plot the label size will increase accordingly. If not, the label size will remain fixed regardless of zoom level.
Tether lines can also be attached to labels if the check box is selected. If this is done, when a label is dragged a tether line will be drawn to indicate its original position.
These options are only available in the section and 3D plots and allow the user to add the Geo Steering data to the plots. User can select to add one or all the following zones: Top Target, Target and Bottom Target
This section allows the user to select the font size of the chart labels, axis labels and grid numbers.
The TVD slice section is only applicable to spider plots and allows the user to specify a TVD range which will be displayed on the spider plot.
By default, labels are coloured the same as the well they are associated with, this can be overridden by selecting the check boxes in the label colour section. Overriding the colours will make all labels of that type the same colour.
If the current plot is a plan view or a spider plot, this section allows the user to display a symbol for the wellhead location and allows any templates to be displayed. The slot names on the templates can also be displayed by clicking the slot names option.
Inner and Outer Tolerance circles can also be displayed by selecting the check boxes in this section.
This section allows the user to determine the frequency at which error ellipses are draw. Error colour and line style can also be selected to match the series style in this section.
This option can severely reduce scrolling and zooming performance if a large number of wells are being displayed.
This section allows the user to define if labels are displayed on offset wells or just the reference well. Check the appropriate check box for the label type.
This section allows the user to override the default line colour for various well types.
When selected, the “Randomize offset colours” option overrides all default well colours and all offset wells are displayed with a different, randomly generated colour.
If the current plot is a travelling cylinder, this section allows the user to change the reference of the travelling cylinder plot from highside to true north. The default reference can be selected in the Anti-Collision Settings, which is accessed via the Tools menu.
If the user has opened a Travelling Cylinder plot from a plan, any offset surveys which are associated with the same Well will not display errors when the user selects to show these.
In the above example if the user opens the New Plan and offsets the current survey and the offset survey, when in the TC plot, if they select to display errors, NO errors will be displayed on the Current Survey because it is associated with the same well (Ref Well) as the plan which is being referenced. The offset survey will show errors as it is associated with a different well.
Selecting “Show Errors on Ref Well” from this section of the chart properties, allows the user to override this and display the errors on Current survey if they require.
It is worth noting here that if the user opens a TC plot from the Current survey and offsets the New Plan, even though the new plan is associated with the same well, the errors will display. The program behaves differently depending on whether a survey or plan is the reference for the TC plot.
This section allows the user to select the colour of the Major and Minor gridlines, and the background colour of the plot.
The X, Y and Z plane colours can also be changed here for the 3D plot.
The colour of the text in the plot axis can be changed here via the “Text” option.
This section allows the user to manipulate the X and Y Axis Minimum and Maximum values and fix the chart scale. The axis scale can be added or omitted from the relevant charts by checking or unchecking the “Show Scales” box.
The axis scale units are scale/inch as default but can be changed to scale/cm by checking this box.
In order to display wells correctly, Well Seeker attempts to preserve the aspect ratio of a plot, so it does not appear distorted i.e. X & Y axis scales are kept the same. This can however lead to plots not filling the entire screen. De-selecting the preserve aspect ratio option means that when zooming in on a plot, Well Seeker does not maintain the 1:1 ratio for the axis scales. This can produce wells which look distorted and it is not recommended to disable this option.
Chart grid lines can be manually overridden by unchecking the “auto” check box. This allows the user to manually enter the distance between major and minor grid lines.
When a chart is first opened, it will display the reference well. Sometimes, if there are several targets and the well does not hit these targets e.g. when planning a well, the user wants to initially understand where all the targets are before they attempt to hit them, the targets may fall out with the maximum and minimum values on the chart, and as a result they are not showing. In this situation, the user can select Auto Max Min Scale to Include Targets, and this will automatically adjust the chart axis scale on opening to include the targets.
The colour and line style of individual plans and surveys can be changed by selecting the series from the drop-down menu (or by selecting the plan or survey directly from the box) and then selecting the colour and line style from the drop-down menus. This can also be done by right clicking the chart and using the customization dialog. Note that the customization dialog option is disabled in the Wall Plot Composer. Also note that changing a series style will have no effect if the Force Color option has been select for the plan/actual wellbore properties level, it will remain the forced colour. If the Only Show Principal Plan option is toggled on, plots will not display any wells other than the reference well and the principal plan for that well, if one has been assigned.
This section allows the user to select which grid lines are displayed. X & Y Major and Minor grid lines can be displayed independently of each other. The “Thick Major Gridline” option, displays the major grid lines more boldly than the minor, making them stand out more.
This section allows the user to select the Chart Style. There are 13 different styles to choose from which includes a “No Style” option. Border style is selected from here also. There are five options: Shadow, Thin Line, No Border, Insert and Thick Line.
If required a Legend can be added to any of the plots, and the drop-down in this section gives the user six options: Hide, Top, Bottom, Left, Right and Inside Axis.
This section allows the user to display targets, drilling targets, target names and it also allows the user to determine individual targets colour and line style. It is also possible to hide targets so that they are not displayed on a particular plot. This is achieved by unchecking the “Visible” box associated with any specific target.
Lease Lines and Hard Lines are also displayed in this section and are identified by the check in the Lease and Hard Lines cell.
This section allows the user to toggle Bit Projections on and off. The user can also select the colour of the projection.
This section allows the user to change the size of Survey Spheres and Fly Down Spheres in 3D Charts, adjust Worksight settings, select the rig graphic on or off and adjust the Critical Point Target settings. These options are only available to edit in the Chart Properties for 3D plots.
