Water decreases gas production because it usually produces water-blocking or mechanical blockage due to inorganic incrustation.

From the negative point of view, the water content in oil deposits influences several harmful conditions such as conification, fissures and high permeability layers, which causes the water to reach the well without sweeping an adequate volume of oil, which can cause the premature abandonment of the well.

Not all the water produced in a field is bad, some can sweep layers of hydrocarbons increasing production.

Article Hydrocarbon production forecast for Louisiana-Producing field module