【摘要】 为解决在高温/超高温环境下钻井液切力下降导致钻井液的沉降稳定性能及携岩能力降低，致使钻井液固相颗粒无法均匀分散及岩屑聚集这一问题，以AMPS(2-丙烯酰胺基-2-甲基丙磺酸)，SAS（烯丙基磺酸钠），SSS（对苯乙烯磺酸钠）以及MBA（亚甲基双丙烯酰胺）为主要原料设计合成了一种四元抗温达到230℃的钻井液悬浮剂XFJ-3~#。采用红外光谱、热重分析以及核磁共振H谱对XFJ-3~#进行表征。结果表明，XFJ-3~#为预期产物，600℃时失重仅为60%。通过其性能评价可知，加量1%XFJ-3~#的5%膨润土浆，经过230℃、10 d老化后，其切力保持率超过70%。悬浮剂XFJ-3~#可以有效提升钻井液在超高温环境下长时间维持钻井液的沉降稳定性能。更多还原

【Abstract】 In high-temperature and ultra-high-temperature drilling operations, the decrease in drilling fluid gel strengths causes the settling stability and the sand carrying capacity of the drilling fluid to reduce, which results in uneven dispersion of the solid particles and cuttings agglomeration in the drilling fluid. To address this problem, a quaternary polymer drilling fluid suspending agent, XFJ-3~#, which exhibits temperature resistance up to 230 ℃, was designed and synthesized using AMPS(2-acrylamido-2-methylpropanesulfonic acid), SAS(sodium allylsulfonate), SSS(sodium p-styrenesulfonate) and MBA(methylene bisacrylamide) as the main raw materials. Fourier transform infrared spectroscopy(FT-IR), thermogravimetric analysis(TGA) and 1H nuclear magnetic resonance spectroscopy(1H-NMR) were used to characterize XFJ-3~#. The results show that XFJ-3~# is the target product.XFJ-3~# loses only 60% of its weight at 600 ℃. Performance evaluation results show that a 5% Bohai drilling clay slurry treated with1%XFJ-3~# retains more than 70% of its gel strengths after aging at 230 ℃ for 10 days. The suspending agent XFJ-3~# can effectively improve the ability of a drilling fluid to maintain its settling stability for a long time under ultra-high temperature environments.更多还原