防水锁处理剂的配方研究及性能评价

发布时间：2018-01-13 06:21

本文关键词：防水锁处理剂的配方研究及性能评价　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：在油气田的钻采过程中,当完井液、钻井液以及压裂液等外来流体进入油气田储层后,由于毛细管力的滞留作用,在地层压力的作用下滞留液体不能够完全排出地层之外,导致储层的含水饱和度不断增加,同时渗透率不断降低的现象称为水锁现象,水锁现象广泛存在于油气田的开发过程中。在我国低渗透油气藏广泛存在,在这些油气藏的开发利用过程中,由于水锁现象的存在而导致不能对这些油气藏进行高效合理的开发。因此,寻找能抑制或解除水锁伤害的高效防水锁剂,对油气藏的保护具有重要意义。本文对不同组分的防水锁处理剂的主剂和助剂进行筛选,再通过特定的仪器对处理剂进行界面张力、吸光度和破乳率等方面的计算,选出最优方案。实验表明当此处理剂采用主剂为1.5%SATRO,助剂为0.2%烷基磺酸钠+0.2%FX-02的复配体系具有超低界面张力,破乳率为90.4%,且在高矿化度、高温条件下体系比较稳定,无新相生成,具有良好的耐温耐盐性。该处理剂配方即为本次实验研究的最优配方。
[Abstract]:In the process of drilling and production of oil and gas field, when foreign fluids such as completion fluid, drilling fluid and fracturing fluid enter into oil and gas field reservoir, they are detained by capillary force. Under the action of formation pressure, the remaining liquid can not be completely discharged from the formation, which leads to the increase of water saturation and the decrease of permeability, which is called water lock phenomenon. The phenomenon of water lock exists widely in the development of oil and gas fields, and in the process of development and utilization of these reservoirs. Because of the existence of water lock phenomenon, these reservoirs can not be developed efficiently and reasonably. Therefore, the high efficiency waterproof locking agent can be found to restrain or relieve the damage of water lock. It is of great significance to protect oil and gas reservoirs. In this paper, the main agents and auxiliaries of different components of waterproof locking agents are screened, and then the interfacial tension of the treatment agents is carried out by special instruments. According to the calculation of absorbance and demulsification rate, the optimum scheme was selected. The experiment shows that the main agent is 1.5 and SATRO is used as the main agent. The complex system with 0.2% alkyl sulfonate 0.2 / FX-02 has ultra-low interfacial tension, and the demulsification rate is 90.4, and the system is stable under the condition of high salinity and high temperature. No new phase formation, good temperature and salt tolerance, the treatment agent formula is the best formula for this experiment.
【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

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