卫星油田段塞调驱体系室内研究

发布时间：2019-04-04 14:33

【摘要】：卫星油田经过多年的注水开发,目前已处于中高含水开采期,许多油层被水淹,或在长期注水后孔隙结构发生很大变化,非均质性更加严重。因此,急需研发出一种经济有效的调驱体系,尤其是针对高渗透地层、特高渗透地层以及需要深部处理的大孔道地层的调驱体系。为此,本文开展了对非离子型聚丙烯酰胺复合交联剂调驱体系和悬浮颗粒调驱体系段塞组合的研究,并对两种体系的调驱性能进行评价。首先,通过成胶时间与成胶强度,优选出非离子型聚丙烯酰胺与复合交联剂的最佳用量,进而确定体系；采用不同矿化度的配液水与不同温度的实验环境对非离子型聚丙烯酰胺复合交联剂调驱体系的性能进行评价。其次,通过布氏粘度计测量添加不同超强悬浮剂的调驱体系的粘度筛选出最佳超强悬浮剂并且优化出粘土与超强悬浮剂的最佳用量,进而确定体系；采用不同的搅拌时间、不同矿化度的配液水以及不同温度的实验环境对悬浮颗粒调驱体系的性能进行评价。再次,通过成胶时间与成胶强度研究非离子型聚丙烯酰胺复合交联剂调驱体系与悬浮颗粒调驱体系两者互混后的相容性：分别向两个体系中加入总用量的1%、2%、5%、10%的调驱剂,置于相同的实验环境中,记录成胶时间并测量其粘度。然后,与未混的单一调驱剂的成胶时间与粘度对比,确定两种调驱体系的相容性以及相容量的范围。最后,通过高压物模装置,模拟卫星油田地层温度及压力,进行岩心剪切实验、突破压力实验、测定堵塞率实验,对驱替条件下调驱体系性能进行研究；通过设计有层间差异的非均质方形岩心和新型调驱体系的采收率及调驱效果优化出两种驱替液的最佳段塞比例。
[Abstract]:After years of water injection and development, the satellite oil field has been in the medium-high water-cut mining period, many oil layers are flooded, or the pore structure changes greatly after long-term water injection, and the heterogeneity is more serious. Therefore, there is an urgent need to develop an economical and effective drive system, especially for the high-permeability formation, the ultra-high-permeability formation and the flooding system of the large-pore formation requiring deep treatment. In this paper, the study on the combination of the combination of the non-ionic polyetheramine compound cross-linking agent and the suspension particle size-adjusting system was carried out, and the drive performance of the two systems was evaluated. firstly, the optimal dosage of the non-ionic polyetheramine and the composite cross-linking agent is preferably determined by the gel forming time and the gel forming strength, and then the system is determined; The performance of the non-ionic polyetheramine compound cross-linking agent was evaluated by the experiment environment with different salinity and the experimental environment of different temperature. secondly, the optimal super-strong suspending agent is selected by the Brookfield viscometer to measure the viscosity of the oil-adjusting system which is added with different super-strong suspending agents, the optimal dosage of the clay and the super-strong suspending agent is optimized, the system is determined, different stirring time is adopted, The properties of the suspended particle size-adjusting system were evaluated by the different salinity and the experimental environment of different temperature. once again, the compatibility of the non-ionic polyetheramine compound cross-linking agent and the suspension particle size-adjusting system is studied by the gel-forming time and the gel-forming strength:1%,2%,5% and 10% of the total amount of the control agent are added to the two systems respectively, The gel time was recorded and its viscosity was measured in the same experimental environment. The compatibility and the phase capacity of the two drive systems were then determined based on the comparison of the gel-forming time and the viscosity of the unblended single drive. Finally, through the high-pressure model device, the temperature and pressure of the formation temperature and pressure of the satellite oil field are simulated, the core shearing experiment is carried out, the pressure experiment is broken through, the blocking rate experiment is measured, and the performance of the drive system under the displacement condition is researched; The optimal slug ratio of two displacement fluids was optimized by the design of a heterogeneous square core with interlayer difference and the recovery and displacement effect of a new type of displacement control system.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.46

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