Oil Field Water Surface System Optimization Study

Water-flooding as an important way to oil exploitation is used by many oilfields in our country. Its purpose is to make up the energy in oil reservoir and displace oil to the wellbore, and the water injection system take an important role in Water-flooding system.Topological optimization to the layout of oilfield water-injection surface system with Genetic Algorithm has been studied in this dissertation. To determine the relation between water distributing station and water injection wells, the positions of water injection station and the layout and parameters of water-injection pipe network through optimization technique, and then assort with the parameters of water-injection pipe network layout with model coordination method. At last, me optimal layout of water-injection pipe network can be obtained. The energy consumption of water-flooding system has been analyzed, and the one of water-injection station is a critical problem. According to 'Large Scale System' theory and 'Pressure Valley' theory, water-injection system can be divided into a series of subsystems. With engineering fluid mechanics theory, economic displacement of water-injection station can be calculated. The running pump pressure has been analyzed, and technical treatments have been given In addition, running characteristics of plunger pump and centrifugal pump connected in parallel have been studied respectively, and then characteristic curve and computing methods have been presented.