Distribution of Hydraulic Head in the Leduc Hydrostratigraphic Unit

Publication Type
Map
Topic
Provincial Hydrogeological Mapping
Publication ID
MAP 631
Publication ID Extended
Map 631
Publication
Publication Other
Abstract

This map depicts the distribution of groundwater hydraulic head in the Leduc hydrostratigraphic unit (HSU). The map is a result of an empirical Bayesian kriging technique using publicly available pressure data from oil and gas well drillstem tests.

The distribution of hydraulic head was mapped at a regional scale using many years of data, thus providing a good indication of hydraulic head within the HSU rather than site-specific values. The final gridded map surface was clipped based on the spatial distribution of representative pressure data. The uncertainty of prediction is depicted on an inset map, which shows the residual values (predicted value minus measured value) plotted at each location to indicate where underprediction or overprediction occurs. Three additional inset maps show the results of the cumulative interference index analysis, the distribution of total dissolved solids (TDS) and the results of water driving force analysis, respectively. The geometry and variable thickness of the Leduc HSU are illustrated on schematic cross-sections, and the relationship between geological units is further described in an accompanying regional lithostratigraphic and hydrostratigraphic table.

Citation

Brinsky, J. (2023): Distribution of hydraulic head in the Leduc hydrostratigraphic unit; Alberta Energy Regulator / Alberta Geological Survey, AER/AGS Map 631, scale 1:3 000 000.

Preview
Map631
Place Keywords
alberta, canada
Place Keywords NTS
72e, 72l, 72m, 73d, 73e, 73l, 73m, 74d, 74e, 82g, 82h, 82i, 82j, 82n, 82o, 82p, 83a, 83b, 83c, 83d, 83e, 83f, 83g, 83h, 83i, 83j, 83k, 83l, 83m, 83n, 83o, 83p, 84a, 84b, 84c, 84d, 84e, 84f, 84g, 84h
Theme Keywords
hydraulic head, hydrogeology, leduc formation, woodbend group, provincial hydro mapping