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Erstellt / Aktualisiert 11.04.2013 / 21.04.2013
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0 Exakte Antworten 13 Text Antworten 0 Multiple Choice Antworten
Fenster schliessen

why is Vs less affected by pore fluids

they have no shear strength

Fenster schliessen

how does less compressible fluids affect the Vp/Vs ration (Poissons)?

less compressible fluids=higher Poissons

(no shear strength in fluid)

Fenster schliessen

4D effects of common production processes

water flood

gas injection

gas production

gas out of solution


Fenster schliessen

4D vs. 4C seismics


4D seismics = 3D surveys repeated a number of times   4C seismics = 4 components; i.e. 3 geophone and hydrophone (pressure)
Fenster schliessen


Primary changes in the reservoir during production of hydrocarbons


Pore pressure   Pore fluids (saturation, viscosity, compressibility, fluid type   Temperature (water flood, steam injection)
Fenster schliessen


Secondary changes in the reservoir during production of hydrocarbons


Compaction overburden stress porosity, fracturing chemical changes
Fenster schliessen

bulk modulus

(one word)


Fenster schliessen

how do porosity and bulk modulus affect how observeable a change in pore fluids is


Higher the porosity the greater the impact of fluid composition Stiffer the rock the more difficult it is to see the effects of fluid composition