This document discusses hydraulic fracturing, which is a well stimulation technique used to increase production from low permeability reservoirs. It involves injecting fluid into the wellbore at high pressure to create fractures in the rock formation. Proppants, such as sand or ceramic beads, are placed in the fractures to keep them open after pressure is removed. Key aspects covered include fracture modeling, optimization of fracture size and conductivity, candidate well selection, and a case study showing production increases from hydraulic fracturing treatment.