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Migration pathway map construction (view source)
Revision as of 14:09, 31 January 2014
, 14:09, 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
}}
A [[migration]] pathway map is a fundamental tool for prospect assessment and field development. In simple migration pathway maps, arrows are drawn perpendicular to structural contours. However, migration pathway maps must also define those faults and those parts of faults that juxtapose sand/sand as well as those faults that cross-seal/cross-leak and dip-seal/dip-leak.
==Requirements for map construction==
The following table lists the requirements for constructing a migration pathway map.
{| class = "wikitable"
|-
! Requirement
! Explanation
|-
| Structure–depth maps
| Defines buoyant vectors for hydrocarbon migration
|-
| Fault plane profile
| Defines sand/sand and sand/shale juxtaposition and potential juxtaposed lithology leak points (JLLPs)
|-
| Quantitative fault plane analysis
| Defines real JLLPs, areas of cross-seal or cross-leak, and areas of dip seal or dip leak
|}
==Example: fault controlling migration==
The figure on the right illustrates how completely a fault can control [[migration pathways]] across a fault. In this fault plane profile of a fault in a Gulf Coast field, SGR was calculated and contoured only on areas of sand/sand juxtaposition. Areas of sand/shale juxtaposition are uncolored. No hydrocarbon migration will occur across these uncolored regions or across the sand/shale juxtapositions with low SGRs (blue-purple). These high SGR areas are essentially holes for fluid migration in the fault plane. It will only occur across the areas of sand/sand juxtaposition with high SGRs (red-orange).
[[file:evaluating-top-and-fault-seal_fig10-32.png|thumb|{{figure number|10-32}}See text for explanation.]]
==See also==
* [[Fault seal and migration pathways]]
* [[How faults control trap fill and migration pathways]]
* [[Effect of seal on hydrocarbon yield estimates]]
==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
}}
A [[migration]] pathway map is a fundamental tool for prospect assessment and field development. In simple migration pathway maps, arrows are drawn perpendicular to structural contours. However, migration pathway maps must also define those faults and those parts of faults that juxtapose sand/sand as well as those faults that cross-seal/cross-leak and dip-seal/dip-leak.
==Requirements for map construction==
The following table lists the requirements for constructing a migration pathway map.
{| class = "wikitable"
|-
! Requirement
! Explanation
|-
| Structure–depth maps
| Defines buoyant vectors for hydrocarbon migration
|-
| Fault plane profile
| Defines sand/sand and sand/shale juxtaposition and potential juxtaposed lithology leak points (JLLPs)
|-
| Quantitative fault plane analysis
| Defines real JLLPs, areas of cross-seal or cross-leak, and areas of dip seal or dip leak
|}
==Example: fault controlling migration==
The figure on the right illustrates how completely a fault can control [[migration pathways]] across a fault. In this fault plane profile of a fault in a Gulf Coast field, SGR was calculated and contoured only on areas of sand/sand juxtaposition. Areas of sand/shale juxtaposition are uncolored. No hydrocarbon migration will occur across these uncolored regions or across the sand/shale juxtapositions with low SGRs (blue-purple). These high SGR areas are essentially holes for fluid migration in the fault plane. It will only occur across the areas of sand/sand juxtaposition with high SGRs (red-orange).
[[file:evaluating-top-and-fault-seal_fig10-32.png|thumb|{{figure number|10-32}}See text for explanation.]]
==See also==
* [[Fault seal and migration pathways]]
* [[How faults control trap fill and migration pathways]]
* [[Effect of seal on hydrocarbon yield estimates]]
==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]]