疏水缔合聚合物与SZ36-1油田储层适应性实验研究
发布时间：2018-12-11 14:07
【摘要】：在陆地油田相继通过聚合物驱成功实现“稳油控水”的增产目标后,部分海上油田也开始了聚合物驱应用的探索与实践,并取得了明显增产效果。为进一步了解海上油田聚合物驱油体系和储层作用关系,为海上稠油油藏聚合物驱提高原油采收率技术决策提供实验依据,本文以物理化学、油藏工程和高分子材料学为理论依据,以化学分析、仪器检测和物理模拟为技术依据,以SZ36-1油田储层地质和流体为研究对象,分别从聚合物驱油体系对储层物性影响、聚合物驱油体系在储层中吸附和解吸附规律及聚合物溶液与储层适应性方面进行了相关实验研究和理论分析。结果表明,疏水缔合聚合物分子链间的缔合作用受到调节剂的影响被抑制,进而疏水缔合聚合物溶液性能也受到影响。聚合物在天然油砂上的吸附和解吸附规律受聚合物浓度、β-环糊精浓度增加、油砂粒径大小和液固比等因素影响。疏水缔合聚合物溶液在岩心表面的吸附和解吸附规律受到注入速度、聚合物溶液浓度、β-环糊精浓度和岩心渗透率等因素影响。随疏水缔合聚合物分子间缔合作用变化,聚合物分子聚集体尺寸与岩心孔喉之间的配伍性以及聚合物分子吸附方式也随之变化,进而引起聚合物溶液流动过程的动态滞留量变化。随注入速度的增加,聚合物分子取向能力增强,使得聚合物分子可以进入尺寸更小的岩心孔隙,聚合物动态滞留量增加。改变疏水缔合聚合物的浓度或β-环糊精的浓度可以改变疏水缔合聚合物缔合程度,进而改善疏水缔合聚合物溶液与非均质储层间的适应性,提高聚合物驱油效果。
[Abstract]:After the successful realization of the goal of "stabilizing oil production and controlling water" by polymer flooding, some offshore oilfields have also begun to explore and practice the application of polymer flooding, and have achieved obvious effect of increasing production. In order to further understand the relationship between polymer flooding system and reservoir action in offshore oil field, and to provide experimental basis for the technical decision of polymer flooding in offshore heavy oil reservoir to improve oil recovery, the physical and chemical properties of polymer flooding in offshore heavy oil reservoir are studied in this paper. Based on the theory of reservoir engineering and polymer materials, taking chemical analysis, instrumentation and physical simulation as technical basis, taking reservoir geology and fluid in SZ36-1 oilfield as research objects, the effects of polymer flooding system on reservoir physical properties are studied respectively. The adsorption and desorption law of polymer flooding system in reservoir and the adaptability of polymer solution to reservoir were studied experimentally and theoretically. The results show that the interaction between the hydrophobically associating polymer chains is inhibited by the influence of the modifier, and the properties of the hydrophobically associating polymer solution are also affected. The adsorption and desorption of polymer on natural oil sand is affected by the concentration of polymer, the increase of 尾 -cyclodextrin concentration, the size of oil sand and the ratio of liquid to solid. The adsorption and desorption of hydrophobically associating polymer solution on the core surface are affected by the injection rate, the concentration of polymer solution, the concentration of 尾 -cyclodextrin and the permeability of core. With the change of the intermolecular association of hydrophobic associating polymers, the compatibility of polymer aggregation size with core pore throat and the adsorption mode of polymer molecules also change. Then the dynamic retention of polymer solution is changed. With the increase of injection rate, the orientation ability of polymer molecules increases, which allows polymer molecules to enter smaller core pores and increase the dynamic retention of polymers. Changing the concentration of hydrophobic associating polymer or 尾 -cyclodextrin can change the association degree of hydrophobic associating polymer, and then improve the adaptability between hydrophobic associating polymer solution and heterogeneous reservoir, and improve the oil displacement effect of polymer.
【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
本文编号：2372684
[Abstract]:After the successful realization of the goal of "stabilizing oil production and controlling water" by polymer flooding, some offshore oilfields have also begun to explore and practice the application of polymer flooding, and have achieved obvious effect of increasing production. In order to further understand the relationship between polymer flooding system and reservoir action in offshore oil field, and to provide experimental basis for the technical decision of polymer flooding in offshore heavy oil reservoir to improve oil recovery, the physical and chemical properties of polymer flooding in offshore heavy oil reservoir are studied in this paper. Based on the theory of reservoir engineering and polymer materials, taking chemical analysis, instrumentation and physical simulation as technical basis, taking reservoir geology and fluid in SZ36-1 oilfield as research objects, the effects of polymer flooding system on reservoir physical properties are studied respectively. The adsorption and desorption law of polymer flooding system in reservoir and the adaptability of polymer solution to reservoir were studied experimentally and theoretically. The results show that the interaction between the hydrophobically associating polymer chains is inhibited by the influence of the modifier, and the properties of the hydrophobically associating polymer solution are also affected. The adsorption and desorption of polymer on natural oil sand is affected by the concentration of polymer, the increase of 尾 -cyclodextrin concentration, the size of oil sand and the ratio of liquid to solid. The adsorption and desorption of hydrophobically associating polymer solution on the core surface are affected by the injection rate, the concentration of polymer solution, the concentration of 尾 -cyclodextrin and the permeability of core. With the change of the intermolecular association of hydrophobic associating polymers, the compatibility of polymer aggregation size with core pore throat and the adsorption mode of polymer molecules also change. Then the dynamic retention of polymer solution is changed. With the increase of injection rate, the orientation ability of polymer molecules increases, which allows polymer molecules to enter smaller core pores and increase the dynamic retention of polymers. Changing the concentration of hydrophobic associating polymer or 尾 -cyclodextrin can change the association degree of hydrophobic associating polymer, and then improve the adaptability between hydrophobic associating polymer solution and heterogeneous reservoir, and improve the oil displacement effect of polymer.
【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
【参考文献】
相关期刊论文 前2条
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