Australian Government, Geoscience Australia

Petroleum Wells

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A new classification scheme for hydrocarbon shows was implemented on 8 January 2008 and most shows data have been reclassified. The new shows classification scheme is displayed below.
Category
(HS = HYDROCARBON SHOW)
Show nameShow codeDescription

HS CORE Bleeding gas G1 Gas bubbles observed bleeding from core
HS CORE Residual oil L0 Visible oil or bitumen in core or measured residual oil from solvent extraction or pinpoint or minor oil bleeding
HS CORE Petroleum odour L0 Petroleum odour from whole core or fresh surfaces
HS CORE Oil staining L0 Oil staining without fluorescence
HS CORE Minor cut L0 Nil to medium cut
HS CORE Minor fluorescence L0 Nil to approximately 30% bright fluorescence or any dull to moderate fluorescence with or without cut
HS CORE Strong cut L1 Greater than 30% bright fluorescence with strong cut at fast rate
HS CORE Moderate cut L1 Greater than 30% bright fluorescence with strong cut at slow to medium rate or moderate cut at fast rate
HS CORE Bleeding oil L2 Oil spontaneously flowing from core
HS CORE No cores recovered NR Coring attempted but no cores recovered
HS CORE No indications NS No observed fluorescence or mineral fluorescence only
HS CORE No coring attempted NT No coring attempted
HS CUTTINGS Bleeding gas G1 Gas bubbles observed bleeding from cuttings or gas measured in blendor
HS CUTTINGS Residual oil L0 Visible oil or bitumen in cuttings or measured residual oil from solvent extraction or pinpoint or minor oil bleeding
HS CUTTINGS Minor fluorescence L0 Nil to approximately 30% bright fluorescence or any dull to moderate fluorescence with or without cut
HS CUTTINGS Oil staining L0 Oil staining without fluorescence
HS CUTTINGS Minor cut L0 Nil to medium cut
HS CUTTINGS Petroleum odour L0 Petroleum odour from whole or broken cuttings
HS CUTTINGS Moderate cut L1 Greater than 30% bright fluorescence with strong cut at slow to medium rate or moderate cut at fast rate
HS CUTTINGS Strong cut L1 Greater than 30% bright fluorescence with strong cut at fast rate
HS CUTTINGS Bleeding oil L2 Oil spontaneously flowing from cuttings
HS CUTTINGS No cuttings NR No cuttings collected
HS CUTTINGS No indications NS No observed fluorescence or mineral fluorescence only
HS CUTTINGS No cuttings NT No cuttings generated (whole well cored)
HS FLOW Trace condensate C2 Condensate scum, globules or emulsion or unmeasured volume of condensate recovered
HS FLOW Condensate recovery C3 Discrete recovery of clean condensate
HS FLOW Condensate flow C5 Measured flow rate of clean condensate
HS FLOW Solution gas from water G1 Solution gas recovered from water
HS FLOW Trace gas G2 Unmeasured volume or flow of gas observed or solution gas recovered from water
HS FLOW Trace solution gas from oil G2 Unmeasured volume or flow of solution gas observed or solution gas recovered from oil
HS FLOW Solution gas from oil G3 Discrete recovery of solution gas from oil
HS FLOW Gas recovery G3 Discrete recovery of gas
HS FLOW Solution gas flow from oil G5 Measured flow rate of solution gas from oil
HS FLOW Gas flow G5 Measured flow rate of gas
HS FLOW Trace oil L2 Oil scum, globules or emulsion or unmeasured volume of oil recovered
HS FLOW Oil recovery L3 Discrete recovery of clean oil
HS FLOW Oil flow L5 Measured flow rate of clean oil
HS FLOW Failed test NR Unable to test target zone
HS FLOW No flow or recovery NS Testing attempted but no samples taken and/or no oil or gas rate observed
HS FLOW No tests NT No flow tests attempted (Drill stem tests, production tests)
HS INTERPRETATION Unproven gas zone G2 Gas zone with water saturation less than approximately 80% with poor results from well testing
HS INTERPRETATION Proven gas zone G4 Gas zone with water saturation less than approximately 80% with supporting results from well testing
HS INTERPRETATION Unproven oil zone L2 Oil zone with water saturation less than approximately 80% with poor results from well testing
HS INTERPRETATION Proven oil zone L4 Oil zone with water saturation less than approximately 80% with supporting results from well testing
HS INTERPRETATION No indications NS No shows for any category
HS INTERPRETATION No pay NS No zones of significant saturation observed
HS LOG Logged minor gas G1 Residual gas or water saturation greater than approximately 80%
HS LOG Logged major gas G2 Gas zone with water saturation less than approximately 80%
HS LOG Logged minor oil L1 Residual oil or water saturation greater than approximately 80%
HS LOG Logged major oil L2 Oil zone with water saturation less than approximately 80%
HS LOG Failed test NR Unable to log target zone
HS LOG No pay NS No zones of significant saturation observed
HS LOG No logs NT No logs run
HS MUD LOGGING Trace gas G0 Gas readings less than approximately 5 times background or total gas less than 1% (50 units)
HS MUD LOGGING Solution gas from oil G1 Mud gas which is interpreted to be associated with oil
HS MUD LOGGING Gas indication G1 Gas readings between approximately 5 and 10 times background or total gas greater than 1% (50 units)
HS MUD LOGGING Gas show G2 Gas readings more than approximately 10 times background or total gas greater than 1% (50 units) with C4 and/or C5
HS MUD LOGGING Trace oil L1 Oil observed in mud
HS MUD LOGGING Failed test NR Unable to measure gas
HS MUD LOGGING Trip gas or connection gas NS Trip gas or connection gas
HS MUD LOGGING No background gas NS No background gas detected
HS PRESSURE SURVEY Measured gas gradient G2 Pressure measurement clearly showed a gas zone
HS PRESSURE SURVEY Measured oil gradient L2 Pressure measurement clearly showed a oil zone
HS PRESSURE SURVEY Failed test NR Pressure test failed
HS PRESSURE SURVEY No petroleum gradients NS No petroleum zones observed
HS PRESSURE SURVEY No pressure tests NT No pressure tests attempted
HS RECOVERY Trace condensate C2 Condensate scum, globules or emulsion or unmeasured volume of condensate recovered
HS RECOVERY Condensate recovery C3 Discrete recovery of clean condensate
HS RECOVERY Solution gas from water G1 Solution gas recovered from water
HS RECOVERY Trace solution gas from oil G2 Unmeasured volume of solution gas observed or solution gas recovered from oil
HS RECOVERY Trace gas G2 Recovered an unmeasured volume of gas
HS RECOVERY Gas recovery G3 Discrete recovery of gas
HS RECOVERY Solution gas from oil G3 Discrete recovery of solution gas from oil
HS RECOVERY Trace oil L2 Oil scum, globules or emulsion or unmeasured volume of oil recovered
HS RECOVERY Oil recovery L3 Discrete recovery of clean oil
HS RECOVERY Failed test NR Unable to test target zone
HS RECOVERY No recovery NS No petroleum recovered
HS RECOVERY No tests NT No recovery attempted
HS SWC Bleeding gas G1 Gas bubbles observed bleeding from SWC
HS SWC Minor fluorescence L0 Nil to approximately 30% bright fluorescence or any dull to moderate fluorescence with or without cut
HS SWC Residual oil L0 Visible oil or bitumen in SWC or measured residual oil from solvent extraction or pinpoint or minor oil bleeding
HS SWC Minor cut L0 Nil to medium cut
HS SWC Oil staining L0 Oil staining without fluorescence
HS SWC Petroleum odour L0 Petroleum odour from whole SWC or fresh surfaces
HS SWC Moderate cut L1 Greater than 30% bright fluorescence with strong cut at slow to medium rate or moderate cut at fast rate
HS SWC Strong cut L1 Greater than 30% bright fluorescence with strong cut at fast rate
HS SWC Bleeding oil L2 Oil spontaneously flowing from core
HS SWC No SWC recovered NR Coring attempted but no SWC cores recovered
HS SWC No indications NS No observed fluorescence or mineral fluorescence only
HS SWC No SWC attempted NT No SWC cores attempted

 
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