喇嘛甸油田浙青颗粒调剖参数优化

发布时间：2018-06-10 13:45

本文选题：沥青颗粒 + 调剖　；参考：《东北石油大学》2017年硕士论文

【摘要】：在油田开发高含水阶段实施沥青颗粒调剖,既可调整层间矛盾、扩大波及体积,也可以提高驱油效率,现场试验取得了一定的效果。但是,在试验中发现不同井层效果差别很大,效果不稳定,原因不清。因此有必要通过室内实验,开展沥青颗粒调剖适应性及参数优化研究。本论文在调研相关文献基础上,阐述了沥青调剖机理,通过检测粒径分布、悬浮率、粘结温度等参数,对现场提供的沥青颗粒进行了性能评价,优选了悬浮剂;改进人造胶结岩心结构及注入方式,解决了沥青颗粒注入过程中在端面聚集的问题;利用填砂管进行驱替调剖实验,评价了沥青颗粒注入性能,包括配伍性、封堵性,确定了沥青颗粒的注入粒径与渗透率的匹配关系,对不同渗透率岩心,优选了最佳注入量。研究结果表明,加入浓度为2%的KCl溶液作为分散剂可以对沥青颗粒起到较好的分散作用;通过对三类沥青颗粒的封堵率实验和耐冲刷实验确定沥青颗粒粒径为0.06mm~0.1mm时调剖效果最佳。且随着调剖剂段塞量的增大,堵塞率和残余阻力系数相应增加。随着调剖剂段塞的增大,突破压力增大,突破时间延长。说明调剖剂的封堵性能和耐冲刷性能十分优良。另外,根据实验结果开展了调剖剂体系注入浓度、调剖半径及段塞组合方式的实验研究,最终确定了注入浓度3500mg/L、调剖半径为井距1/3~1/2、段塞组合方式为高-中-高的段塞组合方式为最佳注入参数,对沥青颗粒型调剖剂的现场应用提供实验依据。
[Abstract]:The application of bitumen particle profile control in high water cut stage of oilfield development can not only adjust the contradiction between layers, enlarge the sweep volume, but also improve the oil displacement efficiency. However, it is found that the effect of different wells is very different and the effect is unstable, the reason is not clear. Therefore, it is necessary to carry out the research on the adaptability and parameter optimization of asphalt particle profile control through laboratory experiments. Based on the investigation and investigation of related literature, the mechanism of asphalt profile control is expounded in this paper. By detecting the parameters of particle size distribution, suspension rate and bonding temperature, the performance of asphalt particles provided in the field is evaluated, and the suspension agent is selected. The artificial cemented core structure and injection method were improved to solve the problem of asphalt particle accumulation on the end surface during the injection process, and the displacement profile control experiment with sand filling pipe was carried out to evaluate the injection performance of asphalt particle, including compatibility, plugging property, etc. The matching relationship between the injection particle size and the permeability is determined and the optimum injection rate is selected for the cores with different permeability. The results show that adding 2% KCl solution as dispersant can disperse asphalt particles well. According to the plugging rate test and scour resistance test of three kinds of asphalt particles, the profile control effect is the best when the size of asphalt particle is 0.06mm~0.1mm. The plugging rate and residual resistance coefficient increase with the increase of the slug volume of profile control agent. With the increase of profile control slug, the breakthrough pressure increases and the breakthrough time is prolonged. The results show that the plugging performance and scour resistance of profile control agent are very good. In addition, based on the experimental results, an experimental study was carried out on the injection concentration, profile control radius and slug combination of profile control agent system. Finally, the injection concentration of 3500mg / L, the profile control radius of 1 / 3 / 1 / 2 of well spacing and the slug combination mode of high-medium-high slug combination are determined as the best injection parameters, which provides the experimental basis for the field application of asphalt particle profile control agent.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE39

【参考文献】