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About TomB

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    RockWare, Golden CO USA
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  1. Hi Nicooh, Here are a few general tips to help resolve the problem. For more specific advice, backup your project with the File | Backup Database menu and send us the ZIP file. Check your boreholes to make sure you have formations listed down to the total depth of the borehole. Use the Strat Picker in the Striplogs menu to add missing formations. Increase the grid cell spacing in the project dimensions for a higher resolution grid. Turn on the option for High Fidelity to make sure your Stratigraphy model honors your data. Turn off the options for Smoothing and Declustering. Change the gridding algorithm to a different method, such as Inverse Distance or Kriging. You may even want to try the Triangulation method. Support for RockWorks 16 will be ending in the next few months. Be sure to upgrade to the current version (RockWorks 2020 at the time of writing this message) for the best discounts. Regards, Tom B RockWare Inc
  2. Gridded surfaces can include use strike and dip information when you create the grid. Choose the ModOps Grid | Create | XYZ & Dips -> Grid menu. Sold models require XY location, Z elevation (ground minus depth), and G (a unique numeric ID) of each node within the item. Regards, Tom B RockWare Inc
  3. Hi Vincent, Please backup your project with the File | Backup Database, and send the ZIP file to [email protected] We'll take a look to see how to resolve the problem. Regards, Tom B RockWare Inc
  4. Hi Craig, 1. It sounds like the grids in the Stratigraphy model that you are using for volume calculation do not represent the surfaces very well. Check for errors by creating contour maps of the upper and lower surface with the well data to check the models against the data. Use Grid Math to subtract two surfaces to get a thickness contour map plotted against the well data. Change the gridding algorithm and other options to change the Stratigraphy model grids. 2. This one sounds like the ground surface grid was replaced with the basement grid. Regenerate the ground surface grid to resolve the problem. Your project and BMP can be ZIPPED and uploaded to https://rockware.com/upload/ or shared via your favorite cloud storage service, such as Google Drive, DropBox, or SendFile. Include a description of the procedure you perform that results in the problem so that we can retrace your steps to duplicate the problem. Regards, Tom B RockWare Inc
  5. Hi Vincent, Option 3 may be your best option to begin with. Since you do not know the base of A or the top of B, leaving both blank with allow RockWorks to estimate the depths for both when creating a Stratigraphy model by using the nearby boreholes. A more rigorous approach is to use the Strat Picker (Striplogs | Pick Stratigraphic Contacts), which displays a cross-section view so you can estimate the base of A and the top of B and add those depths to the Stratigraphy database. RockWorks does make a distinction between your three options listed above. If a value is listed, it is used to calculate the model. If it is blank, then RockWorks uses surrounding boreholes to estimate the model. Regards, Tom B RockWare Inc
  6. Hi Jiawei Li, To make a contour map of percentage lithology at each XY location on the map, follow the RockWorks 2020 instructions below. Create a Lithology model from the borehole data. Open the Lithology Types table from the Lithology tab or the Project Manager | Project Tables. Choose File | Export to Datasheet. Close the Lithology Types table. In the Borehole Operations section, choose Lithology | Lithology/Stratigraphy By XY. Specify the Data Columns | G-Value as in the column labeled as G-Value. Click on the Input tab and specify the name of the Lithology model (.RwMod). Click on the Output Options tab and specify the RwDat (RockWorks) option. Click the CONTINUE (Ctrl-G) button to display the data. Save the data to a RwDat file. Close the Lithology/Stratigraphy By XY menu. Click the Datasheet tab. Open the Lithology Percent RwDat file listed above. Choose the ModOps Grid | Create | XYZ->Grid menu. Specify the XY columns, and set the Z column to the G-value of the lithology you wish to map. Specify the desired options on the 2D Grid Map tab. Click the CONTINUE (Ctrl-G) button to create the contour map. In RockPlot2D, choose File | Export | Raster to create an image for import to ArcMap. Shapefiles can also be exported. Repeat for the other lithology G-Values. Regards, Tom B RockWare Inc
  7. Hi Amirul, The missing Stratigraphy layers may not show if they are very thin, or if using a Modeling Sequence that allows layers to truncate overlying layers where they intersect. In addition, check that the order of the Stratigraphy units remains the same in all boreholes, and that missing units are inserted with a zero-thickness in the Stratigraphy table. You are welcome to backup your project with the File | Backup Database menu and send the ZIP file to [email protected] and we will pursue your question further. Larger files may be uploaded to https://rockware.com/upload/ Regards, Tom B RockWare Inc
  8. Hi Mike, Another way to create a grid on the top of multiple Lithology types is to export the Lithology to Excel, then import the Lithology to the Stratigraphy table. Delete the different bedrock lithology types in the Stratigraphy Types table and merge them into a single Stratigraphy unit, then create a grid with the Stratigraphy | Single Surface menu. Regards, Tom B RockWare Inc
  9. Hi Vincent, Thanks for letting us know that you found a solution. Regards, Tom B RockWare Inc
  10. Hi Vincent, I have good luck with ReportWorks printing to CutePDF at 2400dpi and 4000 dpi. If problems continue, you are welcome to send a backup of your project, your Rw2D and PDF files to [email protected] and I will take a look Regards, Tom B RockWare Inc
  11. JamesH, Regarding your lithology map question: Create lithology map from a lithology model RwMod file and a gridded surface RwGrd file with the Borehole Manager Lithology | Surface Map menu. If you have truncated the Lithology model with the ground surface (superface filter), and you are using the same ground surface for the Lithology Surface Map, you may need to subtract the value of the model Z spacing. The ground surface and lithology model do not overlay exactly due to the size of the lithology model voxels. If you imagine placing a board on a flight of stairs, you will notice that the board only contacts the edge of the stair steps. To subtract a value from the grid used for the Lithology surface, use the Utilities Grid | Math | Grid & Constant menu. Topography contours are not created using this method. You can append topography contours created in another map such as the Borehole Manager Map | Borehole Locations map or the Utilities Map | Grid-Based Map. Regards, Tom B RockWare Inc .
  12. JamesH, I suggest using the Striplogs | 2D | Section and Striplogs | 3D | Multiple Logs to look at your Stratigraphy data. Only a few of your boreholes have the Proterozoic unit, and they are at a higher elevation relative to the base Paleozoic in the boreholes on the east side of the project. If you make grids of this unit, RockWorks does not have the control points for this unit in the wells where it is missing, so it uses the existing data to project the unit at a high elevation. Add Proterozoic tops to boreholes to control the surface. . Some boreholes have missing tops for the Paleozoic where it has been pinched out by the Proterozoic. Add zero-thickness tops for the Paleozoic in these boreholes to control the surfaces. Use the Striplogs | Pick Stratigraphic Contacts menu to add tops on a cross-section and save them to the Borehole Manager Stratigraphy table. Another option is to create a Stratigraphy model with the Triangulation gridding method, and choose the option for No Interpolation of Un-Triangulatable Nodes. This method will truncate the surface outside the area where there is data. There are boreholes that need additional tops to prevent the surfaces from crossing with this method, but it is not as bad as with the other interpolation methods that extend to the edge of the project limits. . I will address your lithology question in a separate message. Regards, Tom B RockWare Inc
  13. Hi James, RockWorks 16 and 17 both have the option to allow underlying units take precedence when grids intersect when creating a Stratigraphy model. In RockWorks 16, this option is called Onlap and is set from the Stratigraphy model menu under the Interpolate Surfaces item. RockWorks 17 adds the ability to allow overlying units take precedence in the Modeling Sequence tab in the Interpolate Surfaces Options. In either case, the automatic Stratigraphy modeling may not produce the model you wish, especially if control is sparse for the lower units. In that case, you can build your model manually using additional control points created from the thicknesses of each unit in the Utilities datasheet, and Utilities Grid | Math to subtract the thickness from the top unit to get the top of the underlying unit. You are welcome to create a backup of the project with the Borehole Manager File | Backup Database menu command and send the ZIP file to [email protected] Include your RwGrd files in the ZIP file. Larger files may be uploaded to rockware.com/upload or you may send a link to your DropBox, Google Drive, or other shared folder. Regards, Tom B
  14. Hi Vincent, Use the Borehole Manager File | Transfer | Stratigraphy to Utilities Datasheet menu to transfer Stratigraphy elevations to the Utilities Datasheet. Add 0's to the missing Stratigraphy columns that you want to calculate. Choose the Utilities Grid | Statistics | Residuals menu to calculate the values for the desired Stratigraphy. Copy the Predicted values to the Stratigraphy unit column. Choose the Utilities File | Transfer | Stratigraphy to Borehole Manager menu to copy the values back to the Borehole Manager database. If the base of the overlying unit is equal to the top of the underlying unit, you can copy the elevation or depth value to that cell corresponding to the base of that unit. Regards, Tom B RockWare Inc.
  15. Hi Craig SS, The "offset" grids are created when you "Explode" the Stratigraphy model display in 3D. The "Expode" option offsets the grids vertically. Regards, Tom B
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