未固结流砂地层采油过程中出砂情况模拟实验

发布时间：2018-05-26 03:05

本文选题：流砂地层 + 出砂　；参考：《石油勘探与开发》2017年05期

【摘要】：为了研究未固结流砂储集层在采油过程中的出砂情况和影响出砂的主要因素,进行了不同条件下的出砂过程模拟实验。使用水洗白砂、黏土(高岭土)和蒸馏水制成未固结流砂地层模型,利用新开发的出砂模拟装置进行了模拟实验,并分析了作用于地层的拖曳力和地层胶结特征对出砂的影响。研究表明,随着拖曳力的增加,出砂速度和产油速度都加快;随着胶结物含量的增加,出砂量和产油量明显降低,甚至在胶结物含量较高的情况下出砂量几乎为零。地层压力大的油藏在开采期间由于产生了较大的拖曳力更可能出砂,而拖曳力和有效地层应力共同影响油藏的总体产油量。可以根据地层黏土含量估计出砂情况,从而通过采取适当的防砂措施尽可能减少出砂量。某些情况下油藏比气藏更容易出砂。
[Abstract]:In order to study the sand production of unconsolidated flowing sand reservoir during oil production and the main factors affecting sand production, the sand production simulation experiments were carried out under different conditions. The unconsolidated sand formation model is made from washed white sand, clay (kaolin) and distilled water. The simulation experiment is carried out by using the newly developed sand production simulation device, and the influence of the drag force acting on the formation and the formation cementation characteristics on the sand production is analyzed. The results show that with the increase of the drag force, the sand production and oil production speed are accelerated, and the sand production and oil production decrease obviously with the increase of cement content, even when the cement content is high, the sand production is almost zero. Reservoir with high formation pressure is more likely to produce sand due to its large towing force during production, and the drag force and effective formation stress affect the total oil production of the reservoir together. Sand production can be estimated according to formation clay content, and sand production can be reduced as much as possible by taking appropriate sand control measures. In some cases, reservoirs are easier to sand than gas reservoirs.
【作者单位】： Department
【分类号】：TE358.1

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