On Enhanced Water Injection to Increase Development Effects in Pingbei Area of Ansai Oilfield

Pingbei Area of Ansai Oilfield is low permeability fractured reservoirs.Along with the advance of water injection development,some oil well located on the fracture direction will be gradually water flooded and some oil wells located on the fracture lateral will be rarely effective,resulting in hard stable oil production.The authors analyze the necessity and feasibility of enhanced water injection in Pingbei Area of Ansai Oilfield,conduct oil reservoir simulation research and gain better history match in accordance with mine field productive practice,thus putting forth the main recognitions and some reasonable development indexes of enhanced water injection.