borehole data. arc hydro gw data model borehole component

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

WellID RefElev FromDepth ToDepth TopElev BottomElev ElevUnits Material HGUID HGUCode LogType

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 TableCombining 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)

146

128

-60

41

-81

750

-140

-217

-372

-433

Georgetown Fm. (GTWN)

Cyclic + Marine member (CYMRN)

Upper confining unit

Leached + collapsed member (LCCLP)

Regional dense member (RGDNS)

Grainstone member (GRNSTN)

Kirschberg evaporite member (KSCH)

Dolomitic member (DOLO)

Lower confining unit, upper Glen Rose (UGLRS)

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

3D Features - BoreLineBoreLine 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

0

90

180

270

Dip – measured from horizontal or from vertical

From vertical 200

From horizontal 700

ToolsDe-survey log table Create non-vertical

borelines

Visualize in ArcScene

Non-vertical BoreLine features

Wells

Working with borehole data

Demo Subsurface Analyst