How To Display Display Lithology Data in Strater Strater ® 2
There are two ways to display lithology data with logs. You can create a basic lithology log using a zone bar log, or you can create a detailed lithology log using the specific lithology log type.
Basic
Detailed
In most cases, a simple zone bar log is sufficient to display lithology data. However, when you want to show varying degrees of indent for each lithology block, or different line shapes for the right side of each block, a lithology lithology log with the specific specific settings is required. required.
Basic Lithology Logs To create a basic lithology log, all you need in your data is four columns of data: Hole ID (well name), From, From, To and Keyword . You can enter this data in Excel, Access, or another program and load the data file into Strater. Or, you can enter it directly into a data table in Strater. In this example, we will type it in directly into the data table. To create the data table and zone bar log: 1. 2. 3. 4.
Open Open Stra Strate ter. r. Go to File | New | Table. In the Create New Table dialog, give the table a name (i.e. Basic Lithology ). ). Set Set the the Base Table Type to Interval Table. Table. This is because the blocks in a zone bar log are based on intervals and have From and To data. 5. Click lick Create and the data table is created. 6. Type in a make-believe make-believe well name (i.e. MW-1) MW-1) for the first 5 rows in the Hole ID column. The Hole ID must be the same for all rows, indicating this data is for the same well. 7. Type Type in the the From and To interval data for each row. For example, type in 0, 10, 20, 30 and 40 for the From data and 10, 20, 30, 40, 50 for the To data. This shows 5 intervals of data (or 5 lithologic units), each 10 units thick. In general, lithologic units are not this uniform, but we can use this for an example. 8. In the Parameter Parameter 1 column, enter in a single keyword indicating the type of unit. The keyword could be any keyword identifying that interval, from the type of lithology to the formation name or age of the rock. For this example, enter a combination of Sandstone, Sandstone, Mudstone, and Siltstone as the keywords. keywords.
All you need is four columns of data to create a basic lithology log. 9.
Click on the borehole view tab at the top of the window (called Borehole 1) to open the borehole view.
10. Go to Tools | Log Items | Zone Bar , or click . 11. Click in the log pane where you want the log to be placed. 12. In the Open dialog, select the data table you created (i.e. Basic Lithology ) from the Use Current Table drop down list and click Open. The log is created. 13. To display the keyword names on the log, select the log and in the Property Manager , on the Zone Bar tab, set Show Label to Show Label with Fill . 14. To show the depths on the screen, go to Tools | Log Items | Depth and click in the log pane next to the zone bar log.
Zone bar logs show basic lithology units with default fill properties.
The color fills were created automatically by Strater. When the log was created, Strater automatically created a scheme containing items for each of the keywords entered into the data table, and specific fill colors for each of those items. You can easily change them in the Scheme Editor . 15. Go to Tools | Scheme Editor . 16. In the Scheme Editor , click the to expand the Keyword scheme Basic Lithology:Parameter1. There are three items in this keyword scheme because there were only three unique keywords in the Parameter 1 column of the data table. Each of these keywords has its own drawing properties. 17. Select the first item in this scheme (i.e. Sandstone). The properties for that item are displayed on the right side of the screen. 18. Open the Fill Properties section and change the fill properties to be what you want for this keyword. For example, click in the Pattern field and select a new pattern for the keyword. Click in the Foreground color and change it to Brown. 19. You can also open the Font Properties section and change the font properties for the label text that is displayed on the log. For example, you can increase the font size (Points) or change the Foreground Color . 20. Select the next item in the scheme and repeat changing the fill pattern and color for that item. 21. Click OK when you are done and the changes are applied to the log.
Edit the keyword scheme properties in the S c h e m e E d i t o r to customize the fill and font properties.
Detailed Lithology Logs Lithology logs are more detailed versions of the zone bar log. To create a detailed lithology log, your data file should have 8 columns of data: Hole ID (well name), From, To, Lithology Keyword , Lithology Description, Indent Percentage, Indent Keyword , and Indent Scale.
The first four data columns are the same as those for the zone bar log, you are defining the well name for the data, the interval for each unit, and giving that unit a keyword. The last four columns contain the data specific to the lithology log type and define the details for the log:
The Lithology Description column contains full text descriptions, typically for the rock type, and can be used for complex text logs. The Indent Percentage column controls the width of the block. The range of values can be from zero to 100. None of the block is displayed with a zero percentage (it has 0 width), and 100 percent displays the whole block (the width of the block is 100% of the log).
Indent Percentage controls the width of the block. In this example, the top block has an Indent Percentage of 50, the middle is 100, and the bottom block is 75.
The Indent Keyword column contains keywords for the lithology indent line scheme items. The right side of the block can have a different shape line (called the “indent line”). The shape of the indent line is defined in a scheme based on this keyword.
Indent Keyword specifies the keyword for the block. The keyword is used to determine the shape of the line on the right side of the block.
The Indent Scale column is used to control the overall scaling width of the indent line. The range is zero to 100. A zero scale flattens the line and makes it appear vertical. A 100 scale sets the width of the indent line to half the width of the lithology log.
Indent Scale controls the width of the indent line. In this example, the top and bottom blocks have an Indent Scale of 35 and the middle block is 50. You can enter this data in Excel, Access, or another program and load the data file into Strater. Or, you can enter it directly into a data table in Strater. In this example, we will load the data from one of the sample XLS files included with Strater. To create the lithology log: 1.
Open a new project in Strater by either opening a new instance of the program or going to File | New | Project.
2. 3. 4.
Go to Tools | Log Items | Lithology , or click . Click in the log pane where you want the log to be placed. In the Open dialog, navigate to the Strater Samples folder (by default this is C:\Program Files\Golden Software\Strater 2\Samples), select Tutorial 2.xls, and click Open. In the Specify Worksheet Column Definitions dialog, accept the defaults and click Next . In the Specify Data Type and Column Positions dialog, we can also accept the defaults. Click Load . The log is created. Strater automatically created a lithology keyword scheme with default colors, and the colors are applied to the log. To show the depths on the screen, go to Tools | Log Items | Depth and click in the log pane next to the lithology log. Select the lithology log and in the Property Manager :
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a. Set the Indent Percentage Column, the Indent Keyword Column and the Indent Scale Column to the same named data columns. b. Set Use Indent Percentage to True. c. Set Use Lithology Indent Lines to True. 9.
Now the indent percentage is visibly applied (the blocks are different widths), but the indent line shapes are not. This is because we do not have a lithology indent line scheme.
The lithology log is created with the default fill colors and the indent percentage is visibly applied. 10. Go to Tools | Scheme Editor . 11. Click the New button to create a new scheme. 12. In the New Scheme dialog: a. b. c. d. e. f.
Select Base Scheme on Column Data. Select Lithology as the Table Name. Select Indent Keyword as the Column Name. Give the scheme a name in the Scheme Name field (i.e. Indent Lines). Select Lithology Indent Lines as the Scheme Type. Click OK to create the scheme.
13. In the Scheme Editor , click the to expand the Lithology Indent Lines scheme Indent Lines. There are nine items in this scheme because there are nine unique keywords in the Indent Keyword data column. Each of these keywords has its own drawing properties. a.
Select the first item in this scheme (i.e. Wasatch). The properties for that item are displayed on the right side of the screen. b. Under the Lithology Indent Line Properties section, click in the Lithology Indent Lines field and choose a different line shape, such as Limestone. c. Repeat for all items in the Indent Lines scheme.
14. In the Scheme Editor , click the to expand the Lithology scheme Lithology:Lithology . There are six items in this scheme because there are six unique keywords in the Lithology Keyword data column. Each of these keywords has its own drawing properties. a.
Select the first item in this scheme (i.e. Silty Shale). The properties for that item are displayed on the right side of the screen. b. Open the Fill Properties section and change the fill properties to be what you want for this lithology unit. For example, click in the Pattern field and select a new pattern for the keyword. Click in the Foreground color and change it to Baby Blue. c. Open the Contact Line Properties section. This controls the contact line at the bottom of the blocks that have this keyword. In most cases, the default is fine. For this first example, change the Style to .1 in. dash, the Color to Blue, and the Width to 0.04. d. Repeat changing the Fill Properties for all items in the Lithology:Lithology scheme. 15. Click OK when you are done and the changes are applied to the log. 16. Select the log, and in the Property Manager click in the Lithology Indent Line Scheme and select the Indent Lines scheme we created. The indent lines are now applied to the log.
Create and apply a lithology indent line scheme to define the line shape on the right side of the lithology blocks.
