Sigma 1
Sigma 1 is a petroleum well in the Eromanga, Queensland, operated by Delhi, drilled to a total depth of 1,747 m.
Well Information
Drilling Data
- Total Depth
- 1,747 m
- Datum Elevation
- 126.0 m
- Spud Date
- 18/11/1983
- Completion Date
- 06/12/1983
- Permit
- -
Location
- Latitude
- -28.3366
- Longitude
- 141.3410
Available Log Data
Caliper (3 curves)
Borehole diameter measurements indicating hole condition and washout zones.
| Curve | Start | End | Interval |
|---|---|---|---|
| CALI | 195 m | 1744 m | 1549 m |
| CALI | 192 m | 1748 m | 1556 m |
| CALS | 195 m | 1744 m | 1549 m |
Density (4 curves)
Bulk density measurements for porosity calculation and lithology identification.
| Curve | Start | End | Interval |
|---|---|---|---|
| DRHO | 196 m | 1748 m | 1551 m |
| PEF | 196 m | 1748 m | 1551 m |
| RHGX | 196 m | 1748 m | 1551 m |
| RHOB | 196 m | 1748 m | 1551 m |
GR (3 curves)
Well log curves recorded during wireline logging operations.
| Curve | Start | End | Interval |
|---|---|---|---|
| GR | 12 m | 1738 m | 1726 m |
| GR | 195 m | 1734 m | 1539 m |
| GR | 192 m | 1735 m | 1543 m |
Miscellaneous (1 curves)
Well log curves recorded during wireline logging operations.
| Curve | Start | End | Interval |
|---|---|---|---|
| DEPTH | 12 m | 1748 m | 1735 m |
Neutron (1 curves)
Porosity measurements derived from neutron or density tools, indicating reservoir storage capacity.
| Curve | Start | End | Interval |
|---|---|---|---|
| NPHI | 196 m | 1744 m | 1548 m |
Resistivity (5 curves)
Electrical resistivity logs used to evaluate fluid content and identify hydrocarbon-bearing zones.
| Curve | Start | End | Interval |
|---|---|---|---|
| LLD | 196 m | 1744 m | 1548 m |
| LLS | 196 m | 1744 m | 1548 m |
| MINV | 1158 m | 1682 m | 524 m |
| MNOR | 1158 m | 1682 m | 524 m |
| MSFL | 1078 m | 1738 m | 659 m |
Sonic (2 curves)
Acoustic travel time logs used for porosity estimation and seismic calibration.
| Curve | Start | End | Interval |
|---|---|---|---|
| DT | 195 m | 1744 m | 1549 m |
| DTL | 195 m | 1744 m | 1549 m |
SP (1 curves)
Spontaneous potential logs measuring natural electrical potentials for permeability indication.
| Curve | Start | End | Interval |
|---|---|---|---|
| SP | 196 m | 1729 m | 1533 m |