Material Balance for Gas Cap Drive Mechanism

This article will demonstrate a material balance equation in gas cap drive mechanism.  First, we start with a full material balance equation.

Figure 1 - Full Material Balance Equation

Figure 1 – Full Material Balance Equation

Assumptions

  • No water production
  • No water injection
  • No gas injection
  • No water influx
  • Neglect formation and connate water compressibility (Cf and Cw have little effect for a gas cap drive mechanism.)

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