无固相高密度压井液体系研究

发布时间：2018-01-06 11:35

本文关键词：无固相高密度压井液体系研究　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着石油勘探技术日益壮大,在钻完井工程压井施工过程中会遇到不同复杂程度的储层情况。针对不同的情况选取合理压井液配方能有效的保护储层,避免储层受到二次伤害,从而保证稳产,因此通过对无固相或者低固相压井液配制的研究非常重要。本文主要是通过对岩心进行敏感性实验研究,其中包括速敏实验、水敏实验、盐敏实验、碱敏实验以及酸敏实验。通过五敏性实验对储层进行敏感性评价。经过分析储层敏感性情况进行了压井液基液的筛选。通过对不同盐水加重剂进行渗透率实验,优选出满足条件的三种加重剂。由于压井液体系外加剂对体系性能的影响巨大,随后通过大量的实验进行外加剂的优选。其中包括粘土稳定剂、气层保护剂、增粘剂、降滤失剂以及缓蚀剂等。针对每一种添加剂分别在优选出的三种基液中进行大量实验和性能分析。优选出在三种方案基液中最适合的添加剂。得出满足条件的三种压井液体系配方。通过在室内实验模拟储层环境,进行配制好的压井液性能的确定。通过高温高压时体系速度梯度和剪切力的关系确定了三种配方的流变性较好。压井液体系滤失性、沉降稳定性以及腐蚀性分别进行评价均达到储层保护的要求。通过将配制好的三种压井液配方室内实验评价后,可以发现三种方案压井液体系有很好的稳定性、抗腐蚀性和耐高温性等。由此可见三种压井液配方体系能满足施工现场需要。
[Abstract]:With the development of oil exploration technology growing in drilling wells engineering construction process will encounter different complexity of the reservoir. According to different conditions of reasonable selection of fracturing fluid formula can effectively protect the reservoir, the reservoir is two times to avoid damage, so as to ensure the stable production, because of this the solid free or low solidkill fluid is very important. This paper is mainly through the experimental study of sensitivity to the core, including the speed sensitivity experiment, water sensitivity experiment, salt sensitivity test, alkali sensitivity and acid sensitivity experiment. Through the experiment of five sensitivity experiments on reservoir for sensitivity evaluation. After analysis of reservoir sensitivity were screened well killing fluid fluid permeability. Through the experiments on different saline increasing agent, optimized to meet the conditions of the three kinds of weighting agent. Due to the effect of fluid additives on the properties of the system, followed by a large number of The preferred experimental admixture. Including clay stabilizer, reservoir protection agent, tackifier, filtration reducing agent and inhibitor. For every kind of additives were a large number of experiments and performance analysis in three kinds of liquid selected. Select the most suitable additives in three schemes based in liquid three. Draw the fluid formula to meet the conditions of the reservoir. Through the simulation environment in the laboratory experiment, determine the performance of fracturing fluid prepared by high temperature and high pressure. The relationship between the system when the velocity gradient and shear stress to determine the rheological properties of three kinds of good. Well fluid filtration, sedimentation the stability and corrosion resistance were evaluated to reservoir protection requirements. Through the prepared three kinds of pressure fluid formulation of experimental evaluation, we found that three schemes of killing fluid system has good stability, corrosion resistance and resistance It can be seen that three kinds of well fluid formulation system can meet the needs of the construction site.

【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】：TE25

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