Total produced Produced or injected flowrate of all fluids of natural gas across the well-reservoir contact with the volumes measured at the sandface temperature and pressure conditions.
For MBO fluid @model the gas sandface flowrate Usually abbreviated as
or is related to surface flowrates of crude oil .For the volatile oil fluid model the total sandface flowrate is related to surface flowrates of fluid components as and natural gas as (see derivation):| LaTeX Math Block |
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q_tg = B_w \, q_W + \frac{B_og -\cdot R(q_v B_g}{1 G - R_v R_s} \, q_O + \frac{B_g - R_s B_o)}{1 - R_v \, R_s} \, q_G
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where
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| water, oil, gas surface flowrates | \{ w, \, B_ \} factors\{ , \, R_v \} and Vaporized oil ratio | at sandface pressure/temperature conditions |
It simplifies for the Black Oil model to:
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q_t = B_w \, q_W + B_o \, q_O + (B_g - R_s B_o) \, q_G
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and simplifies further down to production from undersaturated reservoir as:
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q_t = B_w \, q_W + B_o \, q_O
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simplifies for Dry Gas Reservoir with surface flow rate
and gas formation volume factor to:| LaTeX Math Block |
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q_tg = q_G \cdot B_g
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See
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Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate
[ Well & Reservoir Surveillance ]
[ Sandface flowrates ] [ Oil sandface flowrate ] [ Gas sandface flowrate ] [ Water sandface flowrate ]
[ Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ]Non-linear multi-phase diffusion derivation @model
