井筛效率的模拟评价

O. Y. Faflei, R. О. Deynega, V. Mykhailiuk, A. Semenchuk, B. I. Zvir
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引用次数: 0

摘要

油田后期作业过程的特点是采出原料中机械杂质含量高,水侵率高。水侵在地层携砂和生产层无能岩的破坏过程中起着重要作用。如今,为了加强生产井中地层流体的排出,有必要增加下降深度并使用更高产量的泵。然而,这会导致下压的增加,并且通常会导致更强烈的机械杂质从储层中脱落。首先,从地层中取出的砂是一种高磨蚀剂,不仅会导致泵元件的磨损,还会导致油管、阀门、节流阀等的磨损。预测机械杂质对采油设备元件的影响是一项复杂的任务,需要考虑许多不同的因素。从井中取出的沙子积聚在管道中。此外,它还积聚在计量装置、分离器、阀门和群计量抽油机的其他部件上。石油或凝析油处理厂的工艺罐和储罐被沙子堵塞。为了防止砂子剥落,在大多数情况下采用过滤的方法。这种方法不是最有效的,但它可靠,成本低,环保。分析了几种井下过滤器的结构。为了评价井下滤波器的效率,对其进行了仿真建模研究。根据流体动力学过程和工作环境的特点,建立了颗粒脱落数与颗粒直径的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of well screen efficiency using Simulation
The process of the oil field operation at the late stage is characterized by a significant content of mechanical impurities in the extracted raw materials and a high rate of water encroachment. Water encroachment plays a sig-nificant role in the processes of formation sand carry-over and the destruction of incompetent rocks of productive horizons in deposits. Today, to intensify the drainage of formation fluid from production wells, it is necessary to increase the depth of descent and to use more productive pumps. However, this leads to the growth of the draw down pressure and, as a rule, to more intensive sloughing of mechanical impurities out of the reservoir. First of all, the sand taken out of the formation is a highly abrasive agent, which causes the wear not only of the pump elements, but also of the tubings, valves, throttles, etc. Predicting the impact of mechanical impurities on the ele-ments of the pumping equipment for oil production is a complex task that requires consideration of many different factors. The sand which is carried out of wells is accumulated in the pipelines. Besides, it is accumulated in meas-uring units, separators, valves and other parts of group metering and pumping units. Process tanks and reservoirs at oil or condensate treatment plants are clogged with sand. To combat sloughing of sand, in most cases the meth-od of filtration is used. This method is not the most effective, but it is reliable, low cost, and environmentally friendly. Several constructions of downhole filters are analyzed. To evaluate the efficiency of the downhole filter, its research is carried out using simulation modeling. The dependence of the number of sloughed particles on their diameter is established in accordance with the hydrodynamic processes and characteristics of the working envi-ronment.
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