Challenges and geological factors influencing groundwater drilling success in the Ogwashi-Asaba formation, Nigeria

This study examines the challenges associated with groundwater development in the study area, characterized by widespread abandoned drilling rigs and unsuccessful boreholes. Key issues include circulation loss, low yield, improper well completion, and geological complexities such as lignite, clay, and sandstone units within the Ogwashi-Asaba and Ameki Formation. Circulation loss, primarily occurring within lignite and porous formations, accounts for over 70% of drilling failures across various a