HORN RIVER BASIN Subsurface Aquifer ... - Geoscience BC
HORN RIVER BASIN Subsurface Aquifer ... - Geoscience BC HORN RIVER BASIN Subsurface Aquifer ... - Geoscience BC
HORN RIVER BASIN AQUIFER CHARACTERIZATION PROJECT RESERVOIR QUALITY MAPPING • Quantification of aquifer potential a product of reservoir thickness and quality: porosity‐thickness maps • Mattson and Cretaceous sandstones quantified using standard log porosity cutoffs – Mattson 6% Φ cutoff (generally fine‐grained) – Cretaceous 3% Φ cutoff (coarser‐grained) • “Detrital” carbonates more difficult to quantify – Variable mineralogy, fracturing, and heterogeneity render porosity logs only qualitative indicators of reservoir quality – Classify reservoir as excellent / good / poor based on sample cuttings logs, well logs, and wellsite cuttings logs (approx. 3/6/9% Φ cutoffs) – Calculate Φ‐h as: • Enhanced reservoir thickness (m) x reservoir quality porosity cutoff value
NET POROUS ISOPACH MATTSON FORMATION • 6% Φ cutoff • >100 metres of 6% (+) sst a few km west of HRB shale gas project areas, but none within current developments
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- Page 3 and 4: HORN RIVER BASIN AQUIFER CHARACTERI
- Page 5 and 6: 94-J-11 94-P-14 94-I-11 HORN RIVER
- Page 7 and 8: LIARD BASIN STRUCTURE TOP BANFF FM
- Page 9 and 10: BANFF FORMATION • Distal carbonat
- Page 11 and 12: Φ K 25 m Debolt RUNDLE / DEBOLT
- Page 13 and 14: ISOPACH MIDDLE RUNDLE • Subcrops
- Page 15 and 16: ISOPACH DEBOLT FORMATION • Pre‐
- Page 17 and 18: Φ K Debolt Upper Rundle 25 m DETRI
- Page 19 and 20: Regional fracturing (Giant Springs,
- Page 21 and 22: Mattson Formation (Jackfish Gap, Yu
- Page 23 and 24: Debolt clast GETHING FORMATION •
- Page 25 and 26: CHINKEH FORMATION • Fluvial to ma
- Page 27: HORN RIVER BASIN AQUIFER CHARACTERI
- Page 31 and 32: POROSITY ‐ THICKNESS “DETRITAL
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- Page 35 and 36: Bovie Fault Zone 30,000 Total Disso
- Page 37 and 38: 27 e 6 m 3 / section 10 e 6 m 3 / s
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- Page 41: HORN RIVER BASIN Subsurface Aquifer
<strong>HORN</strong> <strong>RIVER</strong> <strong>BASIN</strong> AQUIFER CHARACTERIZATION PROJECT<br />
RESERVOIR QUALITY MAPPING<br />
• Quantification of aquifer potential a product of reservoir thickness and<br />
quality: porosity‐thickness maps<br />
• Mattson and Cretaceous sandstones quantified using standard log<br />
porosity cutoffs<br />
– Mattson 6% Φ cutoff (generally fine‐grained)<br />
– Cretaceous 3% Φ cutoff (coarser‐grained)<br />
• “Detrital” carbonates more difficult to quantify<br />
– Variable mineralogy, fracturing, and heterogeneity render porosity logs only<br />
qualitative indicators of reservoir quality<br />
– Classify reservoir as excellent / good / poor based on sample cuttings logs,<br />
well logs, and wellsite cuttings logs (approx. 3/6/9% Φ cutoffs)<br />
– Calculate Φ‐h as:<br />
• Enhanced reservoir thickness (m) x reservoir quality porosity cutoff value
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