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Saturations required for hydrocarbon flow (view source)
Revision as of 15:41, 31 January 2014
, 15:41, 31 January 2014Initial import
{{publication
| image = exploring-for-oil-and-gas-traps.png
| width = 120px
| series = Treatise in Petroleum Geology
| title = Exploring for Oil and Gas Traps
| part = Predicting the occurrence of oil and gas traps
| chapter = Evaluating top and fault seal
| frompg = 10-1
| topg = 10-94
| author = Grant M. Skerlec
| link = http://archives.datapages.com/data/specpubs/beaumont/ch10/ch10.htm
| pdf =
| store = http://store.aapg.org/detail.aspx?id=545
| isbn = 0-89181-602-X
}}
==Traditional definitions==
Hydrocarbons flow through a water-wet seal when there is a continuous, interconnected pathway of hydrocarbon-filled pore space. Flow through a seal occurs with saturations of 4.5–17% of the rock pore volume, averaging 10%.<ref name=ch10r67>Schowalter, T., T., 1979, Mechanics of secondary hydrocarbon [[migration]] and entrapment: AAPG Bulletin, vol. 63, no. 5, p. 723–760.</ref> This is one reason displacement pressure is defined at 10% saturation.
==Possible modifications==
Other experiments, including lower [[porosity]] rocks, indicate much higher oil saturations of 25–91% may be required.<ref name=ch10r27>England, W., A., Mackenzie, A., S., Mann, D., M., Quickley, T., M., 1987, The movement and entrapment of petroleum fluids in the subsurface: Journal of the Geological Society, London, vol. 144, no. 2, p. 327–347.</ref> The current assumption that seal capacity is based upon the displacement pressure at only 10% saturation could be very misleading. The value could be two or more orders of magnitude greater than that predicted at 10% saturation.
==See also==
* [[Pitfalls and limitations of estimating seal capacity]]
* [[Difficulty of characterizing Pd of a seal]]
* [[Does the theory predict reality?]]
* [[Seal capacity of breached and hydrocarbon-wet seals]]
* [[Hydrodynamic flow and pressure transients]]
==References==
{{reflist}}
==External links==
{{search}}
* [http://archives.datapages.com/data/specpubs/beaumont/ch10/ch10.htm Original content in Datapages]
* [http://store.aapg.org/detail.aspx?id=545 Find the book in the AAPG Store]
[[Category:Predicting the occurrence of oil and gas traps]]
[[Category:Evaluating top and fault seal]]
| image = exploring-for-oil-and-gas-traps.png
| width = 120px
| series = Treatise in Petroleum Geology
| title = Exploring for Oil and Gas Traps
| part = Predicting the occurrence of oil and gas traps
| chapter = Evaluating top and fault seal
| frompg = 10-1
| topg = 10-94
| author = Grant M. Skerlec
| link = http://archives.datapages.com/data/specpubs/beaumont/ch10/ch10.htm
| pdf =
| store = http://store.aapg.org/detail.aspx?id=545
| isbn = 0-89181-602-X
}}
==Traditional definitions==
Hydrocarbons flow through a water-wet seal when there is a continuous, interconnected pathway of hydrocarbon-filled pore space. Flow through a seal occurs with saturations of 4.5–17% of the rock pore volume, averaging 10%.<ref name=ch10r67>Schowalter, T., T., 1979, Mechanics of secondary hydrocarbon [[migration]] and entrapment: AAPG Bulletin, vol. 63, no. 5, p. 723–760.</ref> This is one reason displacement pressure is defined at 10% saturation.
==Possible modifications==
Other experiments, including lower [[porosity]] rocks, indicate much higher oil saturations of 25–91% may be required.<ref name=ch10r27>England, W., A., Mackenzie, A., S., Mann, D., M., Quickley, T., M., 1987, The movement and entrapment of petroleum fluids in the subsurface: Journal of the Geological Society, London, vol. 144, no. 2, p. 327–347.</ref> The current assumption that seal capacity is based upon the displacement pressure at only 10% saturation could be very misleading. The value could be two or more orders of magnitude greater than that predicted at 10% saturation.
==See also==
* [[Pitfalls and limitations of estimating seal capacity]]
* [[Difficulty of characterizing Pd of a seal]]
* [[Does the theory predict reality?]]
* [[Seal capacity of breached and hydrocarbon-wet seals]]
* [[Hydrodynamic flow and pressure transients]]
==References==
{{reflist}}
==External links==
{{search}}
* [http://archives.datapages.com/data/specpubs/beaumont/ch10/ch10.htm Original content in Datapages]
* [http://store.aapg.org/detail.aspx?id=545 Find the book in the AAPG Store]
[[Category:Predicting the occurrence of oil and gas traps]]
[[Category:Evaluating top and fault seal]]