Gas Anchor Supply Hole Localized Flow Field Numerical Simulation And Applications

Throughout the oil system, oil well pump is a very important subsystem, the pump efficiency in oil recovery efficiency of the system occupies a significant proportion, particularly in the production of relatively large oil and gas wells its impact more visible. However, the current pumping wells pump efficiency is still relatively low. Daqing oilfield, according to 2003 statistics of the pumping wells, the average pump efficiency is 42.92 percent, with an average efficiency of the system is only 22.87 percent. After many years of efforts made some progress, but in improving pump efficiency and system efficiency still did not go to the big breakthrough. Therefore, improving the oil recovery system efficiency, further reduce power consumption, these problems can not be avoided being placed on a vast scientific and technological workers in front of the oil. In recent years, the majority of engineering technical personnel of the brigade on the basis of an in-depth research, after a detailed analysis of the impact that the pump is the major factor in the efficiency of pumping into the gas pump. Thus, through the development of new gas anchor will be produced fluid into the pump before the gas-liquid separation so as to further enhance the pumping efficiency of this pump has a very important topic of practical significance.This article first oil production of conventional gas anchor commonly carried out extensive research, analysis of advantages and disadvantages of conventional gas anchor, and then put forward a new type of multi-flow type gas anchor Cup design ideas; study the gas-liquid separator to improve the efficiency of gas anchor principles and new multi-cup-type gas anchor of the hydraulic flow calculation method; using FLUENT, to adopt a focused study of the gas flow through the anchor openings of the flow field obtained flow field velocity distribution, pressure distribution, etc.; drawn under the conditions of low Reynolds number of local resistance coefficient of orifice calculation method, analysis of the Reynolds number and pore openings between the disturbance on the impact of local resistance coefficient, and obtained the relevant relationship. Finally, according to multiple cup process flow type gas anchor the principle of the guarantee made to improve the flow of gas-liquid separation efficiency of the concept and design and calculation method and the preparation of the corresponding design and calculation software. Multi-flow type gas anchor Cup in Daqing Oilfield Company and promote the use of Henan Oilfield Company has achieved good results after an average pump efficiency increased by 25%, and further proof of the correctness of this design concept and design method of calculation accuracy.