Optimized fracturing design for naturally fractured reservoirs of Daqingzi Oilfield

According to such conditions as complicated geology, fracture development and low efficiency of fracturing stimulation in Daqingzi oilfield, which is one large oilfield with hundred million tons of reserves, the article describes the methods of fracturing design for naturally fractured reservoirs and difficulties of fracturing treatment . It gives the differences of fracturing design methods between the naturally fractured reservoirs and non naturally fractured reservoirs. Based on the feature of naturally fractured reservoir in Daqingzi, the fracturing designs of naturally fractured reservoir were optimized and effective filter-controlling methods were applied. The success of fracturing treatment has been developed and the highest production of wells has been acquired. Also, the fracturing cases of Daqingzi fractured reservoir have been given in this paper.