New study reveals how aquifer fractures impact groundwater drawdown.
Groundwater levels near horizontal wells in fractured or porous aquifers were studied. Different aquifer conditions were considered, and solutions were provided for leaky confined and water table aquifers. The study used a double-porosity model with aquitard storage. Findings include: wellbore storage and skin effects impact drawdown similarly in fractured and porous confined aquifers, aquitard storage delays drawdown the most at intermediate times, and fractured and porous confined aquifers show significant differences in type curves due to matrix storage, which diminish over time.