环保型高效页岩抑制剂聚赖氨酸的制备与评价
发布时间：2018-08-16 10:16
【摘要】：为了解决泥页岩地层钻井过程中井壁失稳的难题,研制出一种兼具强抑制性和优良环保性的水基钻井液页岩抑制剂——聚赖氨酸,并对其性能进行了评价。评价过程及结果如下:①借助红外光谱、核磁共振、电感耦合等离子质谱、热重分析等方法对其进行了化学表征;②通过线性膨胀实验、泥页岩热滚回收实验和膨润土造浆实验等手段,系统地评价了该抑制剂对泥页岩的抑制性能:③抗温性能和pH值适应性评价结果表明,温度在180℃以内、pH值在7~10范围内该抑制剂均能发挥良好的抑制作用;④生物降解试验结果表明,该抑制剂易于降解,环保性能优异。结论认为,聚赖氨酸具有优异抑制性能的原因在于其能够有效地中和泥页岩中膨润土表面负电荷,将表面Zeta电位降低至接近零点,而又不会造成电性反转,从而最大限度地压缩扩散双电层,使泥页岩不易分散;并且其抑制作用优于KCl、小阳离子、Ultrahib等目前常用的几种抑制剂。
[Abstract]:In order to solve the problem of wellbore instability during mud shale formation drilling, a water-base drilling fluid shale inhibitor-Polysine, which has both strong inhibition and excellent environmental protection, was developed and its performance was evaluated. The evaluation process and results are as follows: 1. By means of infrared spectroscopy, nuclear magnetic resonance, inductively coupled plasma mass spectrometry, thermogravimetric analysis, etc. By means of hot rolling recovery test and bentonite slurry making experiment, the inhibition performance of the inhibitor to shale was systematically evaluated. The results showed that the temperature resistance of the inhibitor to shale and the adaptability of the inhibitor to pH value were evaluated. The results of biodegradation test showed that the inhibitor was easy to degrade and had excellent environmental protection performance in the temperature range of 180 鈩，
本文编号：2185682
[Abstract]:In order to solve the problem of wellbore instability during mud shale formation drilling, a water-base drilling fluid shale inhibitor-Polysine, which has both strong inhibition and excellent environmental protection, was developed and its performance was evaluated. The evaluation process and results are as follows: 1. By means of infrared spectroscopy, nuclear magnetic resonance, inductively coupled plasma mass spectrometry, thermogravimetric analysis, etc. By means of hot rolling recovery test and bentonite slurry making experiment, the inhibition performance of the inhibitor to shale was systematically evaluated. The results showed that the temperature resistance of the inhibitor to shale and the adaptability of the inhibitor to pH value were evaluated. The results of biodegradation test showed that the inhibitor was easy to degrade and had excellent environmental protection performance in the temperature range of 180 鈩，
本文编号：2185682
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