Borehole data

Arc Hydro GW Data Model

Borehole Component

Visualize 3D Borehole Data

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

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

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)

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

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

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

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

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 Visualize Create borelines De-survey Survey data: Azimuth, Dip, and Length Data: X, Y, and Z De-survey

Survey data Azimuth – measured from the North Dip – measured from horizontal or from vertical From vertical 20 0 From horizontal 70 0

Tools De-survey log tableCreate non-vertical borelines

Visualize in ArcScene Non-vertical BoreLine features Wells

Working with borehole data Demo Subsurface Analyst