Gas Flowing Material Balance

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Brief

Gas Flowing Material Balance is the advanced engineering technique to determine the Reservoirs GIIP and recovery as well as Well's EUR and JD.

Gas Flowing Material Balance is applied on the Well level given readily available well flowing data: production rate and tubing head pressure.

Math & Physics

P_{\bar{P}}= P_{P_{wf}} + q b_{pss} [1]
b_{pss} = \frac{1422 \times 10^3\ T_R}{kh J_D}
  1. ↑ Mattar, L.; Anderson, D (2005). "Dynamic Material Balance (Oil or Gas-In-Place Without Shut-Ins)". CIPC. 
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