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Line 37: − + − ! Core or cuttings − ! Mud log − ! Sw% − ! Log analysis − ! Dst − ! [[Wireline formation testers|Repeat formation tester (RFT)]] − + − − − − − − − − + − − − − − − − + − − − − − − Line 86:
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Interpreting hydrocarbon shows (view source)
Revision as of 17:09, 5 April 2022
, 17:09, 5 April 2022added Category:Treatise Handbook 3 using HotCat
| part = Predicting the occurrence of oil and gas traps
| part = Predicting the occurrence of oil and gas traps
| chapter = Predicting reservoir system quality and performance
| chapter = Predicting reservoir system quality and performance
| frompg = 9-1
| frompg = 9-68
| topg = 9-156
| topg = 9-71
| author = Dan J. Hartmann, Edward A. Beaumont
| author = Dan J. Hartmann, Edward A. Beaumont
| link = http://archives.datapages.com/data/specpubs/beaumont/ch09/ch09.htm
| link = http://archives.datapages.com/data/specpubs/beaumont/ch09/ch09.htm
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Show type
! Show type || Significance || Origin
|-
|-
| Continuous phase
| Continuous phase || Trapped oil or gas || A slug or filament of oil or gas with a continuous connection through the pore network of a rock
| Trapped oil or gas
| A slug or filament of oil or gas with a continuous connection through the pore network of a rock
|-
|-
| Residual
| Residual || Migrated hydrocarbons || A discontinuous phase of oil or gas which formed as a result of a breached or leaky trap
| Migrated hydrocarbons
| A discontinuous phase of oil or gas which formed as a result of a breached or leaky trap
|-
|-
| Dissolved gas
| Dissolved gas || Gas present in the [[petroleum system]] || Gas exsolving from formation water from pressure release
| Gas present in the [[petroleum system]]
| Gas exsolving from formation water from pressure release
|-
|-
| In kerogen
| In [[kerogen]] || Oil or gas present in [[source rock]] || Oil liberated from kerogen in the [[Petroleum generation|oil generation]] phase
| Oil or gas present in [[source rock]]
| Oil liberated from kerogen in the [[Petroleum generation|oil generation]] phase
|}
|}
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Show type
! Show type || Core or cuttings || Mud log || Sw% || Log analysis || Dst || [[Wireline formation testers|Repeat formation tester (RFT)]]
|-
|-
| Continuous-phase oil
| Continuous-phase oil || Yes || Yes || <65 for Ss, <45 for Ls or [[dolomite]] || Moveable oil || Free oil or oil-cut fluids || Hydrocarbon gradient
| Yes
| Yes
|
| Moveable oil
| Free oil or oil-cut fluids
| Hydrocarbon gradient
|-
|-
| Residual oil
| Residual oil || Yes || Yes || >65 for Ss, >45 for Ls or dolomite || No moveable oil || No recovery || Hydrostatic gradient
| Yes
| Yes
| >65 for Ss, >45 for Ls or dolomite
| No moveable oil
| No recovery
| Hydrostatic gradient
|-
|-
| In-kerogen oil
| In-kerogen oil || Yes || No || 100 or less || No moveable oil || No recovery || Hydrostatic gradient
| Yes
| No
| 100 or less
| No moveable oil
| No recovery
| Hydrostatic gradient
|}
|}
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Show type
! Show type || Core or cuttings || Mud log || Sw% || Log analysis || Dst || Rft
|-
|-
| Continuous-phase gas
| Continuous-phase gas || Yes || Yes || <65 for Ss, <45 for Ls or dolomite || Moveable gas || Gas to surface at measurable sustained rate || Hydrocarbon gradient
| Yes
| Yes
|
| Moveable gas
| Gas to surface at measurable sustained rate
| Hydrocarbon gradient
|-
|-
| Residual gas
| Residual gas || Yes || Yes || >65 for Ss, >45 for Ls or dolomite || No moveable gas || Short flow period caused by pressure drop near wellbore || Hydrostatic gradient
| Yes
| Yes
| >65 for Ss, >45 for Ls or dolomite
| No moveable gas
| Short flow period caused by pressure drop near wellbore
| Hydrostatic gradient
|-
|-
| Dissolved gas
| Dissolved gas || Yes || Yes || 100 || No moveable gas || Gas-cut water or mud || Hydrostatic gradient
| Yes
| Yes
| 100
| No moveable gas
| Gas-cut water or mud
| Hydrostatic gradient
|}
|}
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Characteristic
! Characteristic || Transition || Waste
|-
|-
| Fluid production
| Fluid production || Oil or gas with water, or water only || Oil or gas with water, or water only
| Oil or gas with water, or water only
| Oil or gas with water, or water only
|-
|-
| Flow rate
| Flow rate || High in high-permeability rocks || Low
| High in high-permeability rocks
| Low
|-
|-
| Water saturation
| Water saturation || High, decreases upward || Low, increases upward
| High, decreases upward
| Low, increases upward
|-
|-
| Calculated hydrocarbon column
| Calculated [[hydrocarbon column]] || Small || Large
| Small
| Large
|}
|}
==Residual shows==
==Residual shows==
Residual hydrocarbons occur as dead oil or as water displacement residual hydrocarbons. Dead oil forms as a result of water washing, thermal cracking, or [http://www.oiltracers.com/services/exploration-geochemistry/oil-biodegradation.aspx biodegradation]. Water displacement residual hydrocarbons form in reservoirs as a result of a leaky or breached trap or as a result of production.
Residual hydrocarbons occur as dead oil or as water displacement residual hydrocarbons. Dead oil forms as a result of water washing, thermal [[cracking]], or [[biodegradation]]. Water displacement residual hydrocarbons form in reservoirs as a result of a leaky or breached trap or as a result of production.
==Dissolved-gas shows==
==Dissolved-gas shows==
[[Category:Predicting the occurrence of oil and gas traps]]
[[Category:Predicting the occurrence of oil and gas traps]]
[[Category:Predicting reservoir system quality and performance]]
[[Category:Predicting reservoir system quality and performance]]
[[Category:Treatise Handbook 3]]