Lifting process at which liquid production rate stays constant over time along with pump settings
:
| LaTeX Math Block |
|---|
|
q^{\uparrow}_L(t) = q^{\uparrow}_{LL} = \rm const |
The usual lifting mechanism supporting this method is ESP and SRP.
In practice the constant rate production can only be maintained for wells with BHP
being above critical value
at which pump is operational:
| LaTeX Math Block |
|---|
|
p_{wf}(t) > p_{wf,c} |
otherwise the pump stabilizes production at critical pressure
:
| LaTeX Math Block |
|---|
|
p_{wf}(t) = p_{wf,c} |
and the actual liquid production rate starts declining linearly with formation pressure:
| LaTeX Math Block |
|---|
|
q_L(t) = J \cdot ( p_e(t) - p_{wf,c} ) |
In case formation pressure in producer receives a support and gets high enough to make
| LaTeX Math Block Reference |
|---|
|
estimation equal to original pump setting
then
liquid production rate gets back to
| LaTeX Math Block Reference |
|---|
|
.
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate
[ Well & Reservoir Surveillance ]
[ Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ]
[ Sandface flowrates ] [ Oil sandface flowrate ] [ Gas sandface flowrate ] [ Water sandface flowrate ] [ Total sandface flowrate ]
