Difference between Artificial lift , Well stimulation and EOR

Artificial lift : 

Energy is provided in external from to fluid, to come out of from bottom of wellbore to the surface.

We do modification in, well bore or tubing part for installation and working of artificial lift. So, we deal with tubing part only.

By modification in tubing part, we try to decrease or move down outflow performance relation ship. (OPR).

(Node is considered as bottom of well).

Fluid movement is inside tubing which is generally, vertical flow.

So, it's totally mechanical thing.

Well Stimulation:

 Here, Energy is not provided to formation to modify it's properties. 

We try to remove restriction to flow by modification in formation properties. So, we deal with reservoir or near well bore formation only.

Means here, we improve condition for flow rather than increasing energy to flow.

By stimulating well, we try to modify or increase inflow performance relation ship curve. (IPR) upside.

(Node is considered as bottom of well)

Here, we are trying to easy transport of fluid to come from reservoir to bottom of wellbore.

E.O.R. :

In enhanced oil recovery technique, we deal with reservoir fluids, like oil, water or gas.

We try to modify reservoir fluid property so it can flow easily.

We try to move fluid inside reservoir only.

Fluid movement is generally linear or horizontal in many cases.

Area of investigation is larger for EOR.

  

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