India’s largest frac job nets seven-fold production increase in challenging recompletion ///

The Krishna-Godavari (KG) basin is a proven, petroliferous deltaic basin formed by the discharge of two large rivers—Krishna and Godavari—flowing on the east coast of India. In an exploratory well in the KG basin, a field with two separate reservoir sands was encountered, Fig. 1. Both of these reservoirs, named G and R, are tight formations, which require hydraulic fracturing for commercial productivity. The G formation is composed primarily of siltstone approximately 200-m-thick, with permeability and porosity of about 0.1 mD and 10%, respectively. The approximately 35-m-thick R formation is composed of sandstone and clay, with better reservoir quality having permeability and porosity of 0.1 mD and 15%, respectively. Based on the estimated reserves in place, the G formation is the primary target. Table 1 summarizes key reservoir properties for both of these formations.

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