Changes

{{publication  

{{publication  

  | image  = exploring-for-oil-and-gas-traps.png

  | image  = exploring-for-oil-and-gas-traps.png

  | part    = Critical elements of the petroleum system

  | part    = Critical elements of the petroleum system

  | chapter = Formation fluid pressure and its application

  | chapter = Formation fluid pressure and its application

  | frompg  = 5-1

  | frompg  = 5-8

  | topg    = 5-64

  | topg    = 5-8

  | author  = Edward A. Beaumont, Forrest Fiedler

  | author  = Edward A. Beaumont, Forrest Fiedler

  | link    = http://archives.datapages.com/data/specpubs/beaumont/ch05/ch05.htm

  | link    = http://archives.datapages.com/data/specpubs/beaumont/ch05/ch05.htm

  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

}}

}}

Abnormal hydrostatic pressure is a departure from normal fluid pressure that is caused by geologic factors. The term “[http://www.glossary.oilfield.slb.com/en/Terms/g/geopressure.aspx geopressure]” was introduced originally by Shell Oil Company to refer to overpressured intervals in the U.S. Gulf Coast. “Geopressure” is gradually being replaced by the more descriptive terms “[http://en.wikipedia.org/wiki/Geologic_overpressure overpressure]” and “[http://www.glossary.oilfield.slb.com/en/Terms/u/underpressure.aspx underpressure].”

 

Abnormal hydrostatic pressure is a departure from normal fluid pressure that is caused by geologic factors. The term “[[geopressure]]” was introduced originally by Shell Oil Company to refer to overpressured intervals in the U.S. Gulf Coast. “Geopressure” is gradually being replaced by the more descriptive terms “[[overpressure]]” and “[[underpressure]].”

==Causes==

==Causes==

* [[Uplift]]

* [[Uplift]]

* [[Burial]]

* [[Burial]]

* [[Rock compaction]] or [[Rock dilation|dilation]]

* [[Reservoir_quality#Compaction|Rock compaction]] or [[Rock dilation|dilation]]

* Abnormal [[heat flow]]

* Abnormal [[heat flow]]

| Heat increase || Heat decrease

| Heat increase || Heat decrease

|-

|-

| [[Compaction]],  [[Petroleum generation|Generation of hydrocarbons]] || Dilation of pores

| [[Reservoir_quality#Compaction|Compaction]],  [[Petroleum generation|Generation of hydrocarbons]] || Dilation of pores

|}

|}

[[Category:Critical elements of the petroleum system]]  

[[Category:Critical elements of the petroleum system]]  

[[Category:Formation fluid pressure and its application]]

[[Category:Formation fluid pressure and its application]]