We were asked for hydrogeological advisory in planning, supervising and controlling of works around two construction of production wells campaigns and their respective pumping tests at San Felipe-Curimón (4 wells) and Piuquenes dam (2 wells), Valparaíso region.

• Technical drilling supervision (dual rotary method) with simultaneous casing.
• Well screen design proposal using stainless steel piping, the ones that were alternated with carbon steel casing with the purpose of better endure galvanic corrosion and continuous screening.
• Technical supervision of wells development. In each section of well screen cleaning was performed using air under pressure injection, verifying the absence of drilling material at the bottom.
• Pumping tests with variable and constant pumping rates.

Attached to the final report were the information about pumping tests, air lift essays, granulometric results, photographies of the construction and development process as well as of well installation, and daily activities reports.