Techniques for Optimizing Fracturing Effect in Low Permeability Reservoirs in Jianghan Oilfield

Factors influencing fracturing effect are analyzed. Technical countermeasures for improving fracturing effect in low permeability reservoirs in Jianghan Oilfield are described, which include that formation reconstruction is enhanced by increasing sand volume, breaking agent is added gradually to promote breaking of fracturing fluid, thus to reduce the damage of residues and bring the surface pressure system into a fuel place, reduce the fracture pressure in the reservoirs and optimize the fracturing in thin oil zones.