抗高温有机硅-胺类抑制剂的研制与性能研究

Preparation and Performance of High-temperature Tolerant Organosilicon-amine Inhibitor for Drilling Fluid

罗 霄 都伟超 蒲晓林 曹 成

LUO Xiao DU Weichao PU Xiaolin CAO Cheng

为了获得钻井液用抗高温胺类抑制剂， 引入可以与黏土颗粒发生反应的硅烷偶联剂单体KH-570与DMAA、DMDAAC进行自由基共聚反应， 合成了抗高温有机硅-胺类抑制剂PKDAS， 研究了PKDAS的抗温性能、 在膨润土颗粒上的吸附性能及其对膨润土和泥页岩的抑制性能。研究结果表明： PKDAS的抗温性能较强， 可耐 220℃高温。PKDAS在膨润土表面的吸附能力明显比胺类抑制剂 NH-1和 FA-367的高： 在浓度 6 g/L的情况下， PKDAS、NH-1和FA-367老化前在膨润土颗粒表面的吸附量分别为27.3、 10.2和12.6 mg/g， 220℃老化16 h后的吸附量分别为 6.8、 1.9和2.0 mg/g。PKDAS对膨润土和泥页岩膨胀的抑制效果优良， 其高温抑制性能显著优于抑制剂NH-1与FA-367的。经220℃老化16 h前后， 1%PKDAS水溶液抗膨润土污染的极限分别达 40%和 30%。220℃高温老化16 h后， 泥页岩在质量分数2.0%的NH-1与FA-367水溶液中均出现了大幅膨胀， 膨胀高度分别为1.07和1.05 mm，而在质量分数2.0%的PKDAS水溶液中的膨胀高度仅0.57 mm （老化前为0.32 mm）。220℃老化16 h后， 泥页岩在质量分数 2.0%的 PKDAS、 NH-1与 FA-367溶液中的热滚回收率分别为 86.67%、 38.29%和38.07%。图9参10

Based on molecular structure design to strengthen the bonding strength between amine inhibitor molecules and clay particles， choosing silane coupling agent KH-570 as key monomer， DMAA and DMDAAC as functional monomers， organosilicon-amine inhibitor called PKDAS with high temperature was synthesized by radical copolymerization. The heat resistance，adsorption property on clays and inhibition property to bentonite and mud shale were studied. The results showed that PKDAS was resistant to high temperature of 220℃. The adsorption capacity of PKDAS was stronger than that of inhibitor NH-1 and FA-367，the adsorption of PKDAS，NH-1 and FA-367 before aging on clay particles was 27.3，10.2 and 12.6 mg/g， respectively，while the relative parameters after aging for 16 hours at the temperature of 220℃ ，was 6.8，1.9 and 2.0 mg/g， respectively. The inhibiting property of PKDAS to bentonite and mud shale was excellent，which was superior than that of NH-1 and FA-367 at the high temperature. The extreme anti-pollution of bentonite in the 1% PKDAS solution，was 40% and 30%， respectively，before and after aging for 16 hours at the temperature of 220℃.Expansion height of mud shale in 2.0% PKDAS solution for 16 h after aging at the temperature of 220℃ was 0.57 mm，which was ， lower than that in NH-1 or FA-367 solution， being of 1.07 and 1.05 mm，respectively. The rolling recovery of the mud shale in the PKDAS ，NH-1 and FA-367 solutions after aging for 16 h at the temperature of 220℃ was 86.67%， 38.29% and 38.07%.

10.19346/j.cnki.1000-4092.2016.04.002