Exact(60)
This process, referred to as Surfactant Alternating Gas (SAG), aims at reducing gas mobility at the displacement front.
Figure 1 presents the concept of reducing gas mobility.
It also reduces gas mobility because of finely textured foam.
It provides a moderate reduction in gas mobility due to coarsely textured foam.
The main purpose of foam was used with WAG injection process as gas mobility reduction.
FAWAG may be implemented to solve the persistent challenge of high gas mobility during WAG.
The surfactant blend formulation plays an important role in controlling gas mobility.
Foam assisted WAG has qualified foam as a gas mobility agent for North Sea reservoirs.
Tsau et al. (1999) have used surfactant blends to improve gas mobility control in CO2 flooding.
Use of foam surfactant is one potential solution for reducing gas mobility.
In most cases, water is injected alternately with the intent of reducing the gas mobility.
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