Changes

  | part    = Predicting the occurrence of oil and gas traps

  | part    = Predicting the occurrence of oil and gas traps

  | chapter = Evaluating top and fault seal

  | chapter = Evaluating top and fault seal

  | frompg  = 10-1

  | frompg  = 10-69

  | topg    = 10-94

  | topg    = 10-69

  | author  = Grant M. Skerlec

  | author  = Grant M. Skerlec

  | link    = http://archives.datapages.com/data/specpubs/beaumont/ch10/ch10.htm

  | link    = http://archives.datapages.com/data/specpubs/beaumont/ch10/ch10.htm

  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

}}

}}

In practice, the displacement pressure is estimated from laboratory measurements. In real rocks, the single pore-throat radius of the equations on page 10–68 is replaced by a complex pore-throat size distribution.

In practice, the [[Top seal displacement pressure|displacement pressure]] (P_d) is estimated from laboratory measurements. In real rocks, the single pore-throat radius of the equations in [[Hydrocarbon column: calculation of maximum height]] is replaced by a complex pore-throat size distribution.

==Estimating techniques==

==Estimating techniques==

{| class = "wikitable"

{| class = "wikitable"

|-

|-

! Technique

! Technique || Needed for the technique

! Needed for the technique

|-

|-

| Mercury injection measurements

| Mercury injection measurements || [[Overview of routine core analysis|Cores]] or [[Mudlogging: drill cuttings analysis|cuttings]]

| Cores or cuttings

|-

|-

| Log analysis

| Log analysis || [[Basic open hole tools#Resistivity|Logs]] and database of laboratory measurements

| Logs and database of laboratory measurements

|-

|-

| Sedimentary facies

| Sedimentary facies || [[Facies map]]s and database of laboratory measurements

| Facies maps and database of laboratory measurements

|-

|-

| Pore-size distribution

| Pore-size distribution || [[Thin section analysis|Thin sections]], cores, or cuttings

| Thin sections, cores, or cuttings

|}

|}

==See also==

==See also==

* [[Measuring displacement pressure using mercury injection]]

 

* [[Estimating displacement pressure from sedimentary facies and well logs]]

* [[Measuring Pd using mercury injection]]

* [[Estimating displacement pressure from pore size]]

* [[Estimating seal capacity from sedimentary facies and well logs]]

* [[Estimating Pd from pore size]]

==External links==

==External links==

[[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]]