复合离子型聚合物凝胶堵漏剂的研制

发布时间：2018-01-09 03:01

本文关键词：复合离子型聚合物凝胶堵漏剂的研制　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：在钻井过程中,井漏问题是严重制约钻进进度、增加钻井成本的难题。目前堵漏材料或为刚性材料,对漏层的适应性差,或堵漏材料的吸水膨胀能力低,不能深入漏层内部,容易产生二次漏失。本文研制的聚合物凝胶具有优良的变形能力,吸水膨胀仍具有较高的弹性和韧性,能适应不同尺寸的漏层,能深入漏层内部,对漏层进行填充压实。本文研制的聚合物凝胶以丙烯酰胺(AM)、2-丙烯酰胺基-丙磺酸(AMPS)和N-N2甲基丙烯酰胺(DMAM)三种单体进行聚合,并加入钠基膨润土(MMT)来增强聚合物的强度。通过设计正交实验,对影响聚合物凝胶的性能进行了研究,选出较理想的合成配方；并进行了单因素分析,对合成配方进行了优化,得到最优的反应条件：单体配比(AM:AMPS:DMAM)为：8：1：1；交联剂加量为：0.08%;钠基膨润土加量为：40%;单体浓度为：23.5%;引发剂加量为：0.18%;pH值为：7,合成的聚合物凝胶具有较高的强度以及较大的吸水膨胀倍数。本文合成的聚合物凝胶具有良好的配伍性,钻井液、地层水、油对聚合物凝胶的性能影响不大。在室内模拟实验中,聚合物凝胶单剂的承压较低,最高承压0.5MPa；与其他材料复配后,承压能力大幅提高,承压能力可达到7MPa,抗温性能良好,在100℃下聚合物凝胶能保持良好的性质。
[Abstract]:In the process of drilling, well leakage problem is seriously restricted the progress of drilling, increase the drilling cost. The problem of plugging material or as a rigid material, the leakage layer adaptability and water plugging material or expansion ability is low, not deep layer internal leakage, easy to produce two times of leakage. This paper has developed a polymer gel excellent deformability, water swelling still has high elasticity and toughness, can adapt to the leakage layer of different sizes, can penetrate the internal leakage layer, filling and compacting of leakage layer. This polymer gel with acrylamide (AM), 2- propylene amide propyl sulfonic acid (AMPS) and N-N2 methyl acrylamide (DMAM) three kinds of monomer polymerization and adding sodium bentonite (MMT) to enhance the strength of polymer. Through orthogonal experiment, influence on the mechanical properties of polymer gel were studied. The selected synthetic formula ideal; and the single factor Analysis on the synthesis were optimized, the optimum reaction conditions: monomer ratio (AM:AMPS:DMAM): 8:1:1; crosslinking agent dosage: 0.08%; sodium bentonite dosage: 40%; concentration of monomer: 23.5%; initiator dosage: 0.18%; pH value: 7 the synthesis of polymer gel, with high strength and high water absorbing expansion ratio. In this paper the synthesis of polymer gel has good compatibility, drilling fluid, formation water, oil has little effect on the performance of polymer gel. In the experiments, the polymer gel bearing single agent is low, the highest pressure 0.5MPa and other materials; after compounded pressure increases, the bearing capacity can reach 7MPa, good temperature resistance, polymer gel can maintain good properties under 100 degrees.

【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】：TE258

【相似文献】