# 2009_Chapter 4 Material Balance.ppt | Phases Of Matter | Petroleum Reservoir

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Chapter 3 Material Balance Applied to Oil Reservoirs § 3.1 Introduction -The Schilthuis material balance equation - Basic tools of reservoir engineering = Interpreting and predicting reservoir performance. -Material balance 1. zero dimension – this chapter 2. multi-dimension (multi-phase) – reservoir simulation § 3.2 General form of the material balance equation for a hydrocarbon reservoir Underground withdrawal (RB) = Expansion of oil and original dissolve
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Chapter 3 Material Balance Applied to Oil Reservoirs § 3.1 Introduction -The Schilthuis material balance equation - Basic tools of reservoir engineering => Interreting and redicting reservoir erformance.-!aterial balance 1. ero dimension # this chater  \$. multi-dimension %multi-hase& # reservoir simulation  § 3.2 General form of the material balance equation for a hdrocarbon reservoir  'nderground (ithdra(al %)B& = *+ansion of oil and srcinal dissolved gas %)B&,,,%&  *+ansion of gasca gas %)B& ,,,,,, ,,,%B&  )eduction in /02 due to connate (ater e+ansion and decrease in the ore volume %)B&,,,,,,,,, ,,.,,%0&     ! #!# !  STB BS V STB placeinoil initial  N  oiwc −==  φ  bbl bbl or  ft  ft or SCF SCF const oil theof  Vol C  H initial   gascaptheof  Vol C  H initial  m 33 \$%.! ...... === ! STB productionoil cumulative N   p  = ! .! . STB productionoil cum SCF  production gascum ratooil  gascumulative R  p  =−=    &'pansion of oil ( ori)inall dissolved )as   !#.3 \$%\$!% ! .! .!e'p e'p   RBSTB RBSTB B B N  NB NB  pat liq pat liqansionoil ansion Liquid  oiooio i ==−=−= −= !2.3 \$%\$%! !\$ ! %e'p   RBSCF  RBSTBSCF STB B R R N  B NR B NR  pat  gas solution pat  gas solutionansion gas Liberated   g  s si g  s g  si i ==−=−= −−=
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