Borehole data

1. Borehole data

2. Arc Hydro GW Data Model

3. Borehole Component

4. Visualize 3D Borehole Data

5. Borehole Datasets Typical data stored using “From” and “To” From To

6. BoreholeLog Table • Used to store 3D borehole data related with well features • Each row in the table represents a point/interval along a borehole • Data are related with a Well feature through the WellID attribute • 3D geometry is defined by the TopElev and BottomElev attributes

7. BoreholeLog Table Combining the well geometry (x, y) and the vertical data stored in the BoreholeLog table we can describe a set of 3D geometries (x, y, z)

8. BoreholeLog Table Example of well completion data (screens, porous cement)

9. 3D Visualization We can create 3D displays of wells with the elevation and depth attributes of the well feature Land surface Extruded well features

10. BorePoint is a 3D point feature class for representing point locations along a borehole (e.g. geologic contacts, samplers) 3D Features - BorePoint

11. BoreLine is a 3D line feature class for representing intervals along a borehole 3D Features - BoreLine

12. Non-vertical boreholes • The case of non-vertical boreholes is a bit more complex • Usually the data are given in a local coordinate system as a Azimuth, Dip, and Length • The data is transformed to X, Y, Z coordinates and can then be visualized in ArcScene Survey data: Azimuth, Dip, and Length Data: X, Y, and Z Visualize Create borelines De-survey De-survey

13. Survey data Azimuth – measured from the North 0 270 90 180 Dip– measured from horizontal or from vertical From horizontal 700 From vertical 200

14. Tools De-survey log table Create non-vertical borelines

15. Visualize in ArcScene Wells Non-vertical BoreLine features

16. Demo Subsurface Analyst Working with borehole data