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  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

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Changes in pressure differentials across faults can change seal behavior. A [[Cross-sealing faults|cross-sealing fault]] is cross sealing to a finite column of [[hydrocarbon]]s. As the [[Buoyancy pressure|buoyant pressure]] increases at the crest of the [[hydrocarbon column]], the buoyant pressure will ultimately exceed the [[displacement pressure]] of the fault zone and the fault will [[Cross-leaking faults|cross-leak]].<ref name=ch10r76>Smith, D. A., 1966, [http://archives.datapages.com/data/bulletns/1965-67/data/pg/0050/0002/0350/0363.htm Theoretical considerations of sealing and non-sealing faults]: AAPG Bulletin, vol. 50, no. 2, p. 363–374.</ref><ref name=ch10r10>Buck, S., Robertson, G., 1996, Fault seal behavior at Beryl field, UK North Sea: observations from 20 years of production, drilling and injection data: AAPG Annual Meeting Abstracts, San Diego, May 19–22, p. A20.</ref>

Changes in pressure differentials across faults can change seal behavior. A [[cross-sealing fault]] is cross sealing to a finite column of [[hydrocarbon]]s. As the [[Buoyancy pressure|buoyant pressure]] increases at the crest of the [[hydrocarbon column]], the buoyant pressure will ultimately exceed the [[displacement pressure]] of the fault zone and the fault will [[Cross-leaking faults|cross-leak]].<ref name=ch10r76>Smith, D. A., 1966, [http://archives.datapages.com/data/bulletns/1965-67/data/pg/0050/0002/0350/0363.htm Theoretical considerations of sealing and non-sealing faults]: AAPG Bulletin, vol. 50, no. 2, p. 363–374.</ref><ref name=ch10r10>Buck, S., Robertson, G., 1996, Fault seal behavior at Beryl field, UK North Sea: observations from 20 years of production, drilling and injection data: AAPG Annual Meeting Abstracts, San Diego, May 19–22, p. A20.</ref>

==Pressure differentials and leakage==

==Pressure differentials and leakage==

[[Category:Predicting the occurrence of oil and gas traps]]  

[[Category:Predicting the occurrence of oil and gas traps]]  

[[Category:Evaluating top and fault seal]]

[[Category:Evaluating top and fault seal]]