Series data

Data grid for direct input of data and labels.

Data points

Provides options to Paste data from the Windows clipboard, import from a LAS file or Delete all data from the series.

The Paste option expects a list consisting of three columns (depth, data value and label), separated by Tab characters on the Windows clipboard.  The easiest way to prepare is to copy a list of three columns from Excel. The third column, representing the labels, may be (partially) empty.

The Import LAS option, allows the user to select a LAS 2.0 file and then display the LAS Import dialog.

The Delete all option will remove all values from the data grid (1).  Note that this dialog works on a temporary copy that will replace the actual series data only when OK is clicked to close the dialog.  Hence, if the data is accidentally deleted here, simply click Cancel and the series data will be retained (and can be edited by re-opening this dialog).

Reduce data points

When importing data, it may have a very high density (many points) that will cause the well sketch data file to become large in size (certainly with several of such series) and result in slow drawing.  In some cases (when drawing a deep well in its entirety) this high density may not be required. Using this functionality, the data may be condensed by reducing the data into less points.

For example: the data may consist of points for every 0.10 meter (i.e. 10 points per meter) which has little value when drawing a 4000 meter well.  In such a case, it could be an option to condense the data to the average value for every 10 points (i.e. the average data value per meter).  Instead of the average value, the user may also select the first, minimum, maximum or last value of each group.

Data import

When finally importing the data (i.e. close the dialog with the OK button), the data will be imported into the graph series (existing data will be overwritten).  When doing so, the user may elect to adjust the depth values by a given number (it may be negative).  This may be useful when drawing a well sketch for a specific rotary table elevation and the data (e.g. imported from a LAS file) is referenced to another elevation.

The null value represents points for which no data is available.  This is typically used in LAS files, but for Line series, null values can be used to create gaps in the line (see below). 

Any value may be chosen to represent a null value (gap in line series) but typical values used in LAS files are -999.25, -9999.25 and -9999.