CAJ | 학술논문

通过分析三元复合驱油体系下硅垢的形成机理,设计合成了新型硅防垢剂SY-KD. SY-KD是由丙烯酸(AA)和对甲基烯丙基氧基苯磺酸(MBS)共聚形成的高分子(CAABS)与2-膦酸丁烷-1,2,4-三羧酸(PBTC)复配的混合物. SY-KD中羧基官能团通过氢键相互作用与原硅酸分子或其二聚体发生键合,由于SY-KD分子链的空间位阻效应,阻止了原硅酸分子或二聚体进一步聚合形成二氧化硅.室内研究结果表明, SY-KD各组分对于硅垢的阻垢能力主要是通过阻聚、吸附分散以及对不溶性SiO2的溶蚀作用来实现的,是一种很好的三元复合驱阻垢剂. SY-KD防垢剂使结垢油井平均检泵周期由50 d左右增加到300 d.
통과분석삼원복합구유체계하규구적형성궤리,설계합성료신형규방구제SY-KD. SY-KD시유병희산(AA)화대갑기희병기양기분광산(MBS)공취형성적고분자(CAABS)여2-련산정완-1,2,4-삼최산(PBTC)복배적혼합물. SY-KD중최기관능단통과경건상호작용여원규산분자혹기이취체발생건합,유우SY-KD분자련적공간위조효응,조지료원규산분자혹이취체진일보취합형성이양화규.실내연구결과표명, SY-KD각조분대우규구적조구능력주요시통과조취、흡부분산이급대불용성SiO2적용식작용래실현적,시일충흔호적삼원복합구조구제. SY-KD방구제사결구유정평균검빙주기유50 d좌우증가도300 d.
By analyzing silica scale formation mechanism under the alkaline/surfactant/polymer( ASP) floo-ding system, we designed and synthesized a new type of scale inhibitor SY-KD. SY-KD inhibitor is a complex mixture that made by the polymer( CAABS) which is copolymerized by acrylic acid( AA) and p-methyl allyl oxybenzene sulfonate(MBS) &2-phosphate-1,2,4-tricarboxylic acid(PBTC). The carboxyl functional groups of SY-KD can link to the orthosilicic acid molecules or its dimer acid through hydrogen bonding interactions, since the molecular chain of SY-KD's steric effect would prevent further polymerization that the orthosilicic acid molecules or its dimer acid form silica dioxide. Laboratory experiments studies have shown that SY-KD is a good inhibitor for ASP flooding, each component of SY-KD can achieve the silicon scale inhibition ability mainly through the polymerization inhibition, the adsorption and dispersion, and the dissolution of insoluble SiO2 . Field tests have shown that SY-KD scale inhibitor delays the average pump detection period of scaled wells from about 50 d to 300 d.