论文部分内容阅读
首先合成了一种含氟大分子单体,然后以丙烯酰胺、阳离子单体二甲基二烯丙基氯化铵、含氟大分子单体为原料,通过聚合反应合成了聚合物抑制剂PFDAM,采用红外光谱和核磁共振氢谱对其结构进行了表征,采用线性膨胀率实验、高温高压线性膨胀率实验、岩屑滚动回收率实验等对聚合物PFDAM与常规抑制剂的抑制性能进行了对比。结果表明,1%PFDAM溶液16h的线性膨胀率为12.80%,岩屑滚动回收率为91.43%,高温高压(90℃,0.7MPa)线性膨胀率为13.25%,其抑制效果较常规抑制剂好。聚合物的抗温性能实验表明,该聚合物可抗130℃高温。室温下,该聚合物对水基钻井液有较强的增黏作用,加入1%PFDAM溶液后,钻井液的表观黏度(AV)提高3.07倍。
First, a fluorine-containing macromonomer was synthesized, and then the polymer inhibitor PFDAM was synthesized through polymerization with acrylamide, cationic monomer dimethyldiallylammonium chloride and fluorinated macromonomer as raw materials The structure of the polymer PFDAM was characterized by IR and 1H-NMR. The inhibition performance of the polymer PFDAM and the conventional inhibitor was compared with the linear expansion test, the high-temperature and high-pressure linear expansion test, the cuttings recovery test . The results showed that the linear expansion rate of the 1% PFDAM solution was 12.80% at 16h, the recovery rate of cuttings was 91.43%, and the linear expansion rate at high temperature and high pressure (90 ℃, 0.7MPa) was 13.25%. The inhibitory effect was better than conventional inhibitors. The heat resistance of the polymer experiments show that the polymer can be high temperature of 130 ℃. At room temperature, the polymer has a stronger viscosity-increasing effect on water-based drilling fluid. After adding 1% PFDAM solution, apparent viscosity (AV) of drilling fluid increased 3.07 times.