Single Set Of Field Application Of Optimization Simulation Program Abstract

At present, most of the domestic crude oil wax ingredient is high, in order to ensure the normal production of oil field, is widely used in water in oil gathering and transportation process will be in hot water with the recovery mode of liquid mixing, keep the gathering pipeline temperature is higher than the freezing point of oil.But with the deepening of oilfield development, the oil well produced fluid and liquid water content and the well head temperature, produced fluid conveying can be realized without heating, transportation technology can be widely applied to oil temperature set. In recent years, the research of low temperature gathering process, crude oil gathering and transportation technology gradually transformed into a neat, unheated gathering and transportation by water, liquid production depends on the recovery temperature is transported to the transfer station.Single pipe pigging neat oil gathering process in some blocks in Daqing oil field, Changqing oil field application.Double water with conventional oil gathering process, influence factors of single set of single well production parameters of oil in the process is mainly the larger wellhead back pressure and oil temperature. In the single gathering process, the produced fluid friction and temperature drop will increase with increasing set of tubing length. In the actual production, the specific performance of the single well wellhead back pressure increases, the oil return temperature reducing measurement. At the same time, appear the crystallization of wax in crude oil and other components will be on the tube wall, reduce the pipeline internal flow area increases during the process of gathering the resistance, reduced pipeline capacity. When the wax in the pipeline, will affect the flow of produced liquid, and even cause the condensate pipeline, which endanger the safety of the actual production. Therefore, when the wax to a certain extent must be clear on the pipe wall wax.Single pipe pigging neat oil gathering process is the server device is installed at the wellhead ball collecting device is arranged between the measurement.Through the establishment of a single pipe pigging not watering gathering process simulation model, determine the different liquid producing capacity and water countertenor the condition of pigging period, according to the calculation of the model pass the ball well back pressure-changes, determine whether or not the ball is difficult, the better to ensure the smooth implementation of the pipeline, safety in production has important practical significance.