The Aishwariya Barmer Hill reservoir, located in India's Barmer Basin, is a tight oil reservoir with low permeability (~1 md) and high porosity (~25%). Geologically complex, it consists of multiple stacked reservoirs and fault blocks.

During the appraisal phase, seven wells of various architectures (vertical, horizontal, longitudinal, transverse) and completion methods were tested, along with hydraulic fracturing techniques and artificial lift solutions. Using insights from this phase, a full-field development plan was executed with 39 wells (37 horizontal and 2 deviated), and over 400 hydraulic fracturing jobs.

Subsequently, two infill drilling campaigns, comprising five and fourteen wells respectively, were conducted, integrating lessons learnt from prior operations. These campaigns added more than 300 additional fracturing stages.

The development of the Aishwariya Barmer Hill reservoir has seen continuous improvement in completion, fracturing design, and execution, despite increasing operational challenges caused by declining reservoir pressures and drilling complexities.