本文選題：降濾失劑　切入點(diǎn)：強(qiáng)抑制性　出處：《精細(xì)化工》2017年02期

【摘要】：以丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酸(AA)和二烯丙基二甲基氯化銨(DMDAAC)為聚合單體,過硫酸銨-亞硫酸氫鈉為氧化還原引發(fā)體系,通過水溶液聚合得到一種新型抗鹽、抗高溫、強(qiáng)抑制鉆井液降濾失劑SN-K。通過單因素實(shí)驗(yàn)確定了最佳單體配比n(AM)∶n(AMPS)∶n(AA)∶n(DMDAAC)=1∶2∶2∶1,反應(yīng)溫度65℃,反應(yīng)時(shí)間4 h,w(單體)=20%(以水溶液的總質(zhì)量計(jì),下同),w(引發(fā)劑)=0.5%(以單體總質(zhì)量為基準(zhǔn),下同)。采用KOH調(diào)節(jié)聚合體系pH,引入強(qiáng)抑制性離子K+,并對(duì)SN-K進(jìn)行性能評(píng)價(jià)。結(jié)果表明:在鹽水鉆井液中,w(SN-K)=3.0%(以鉆井液總質(zhì)量為基準(zhǔn),下同)時(shí),經(jīng)180℃高溫老化16 h后,SN-K仍具有良好的降濾失效果,FLAPI=8.4 m L,沒有添加SN-K的鉆井液基漿的FLAPI=82.0 m L;泥頁(yè)巖滾動(dòng)回收實(shí)驗(yàn)表明:當(dāng)w(SN-K)=1.0%時(shí),巖屑相對(duì)巖心回收率(R*)為94.4%,遠(yuǎn)遠(yuǎn)超過KCl體系中w(KCl)=3.0%時(shí)的77.3%;利用SEM對(duì)添加SN-K的鉆井液高溫高壓濾餅進(jìn)行了微觀表征,結(jié)果顯示其具有致密的網(wǎng)架結(jié)構(gòu)。
[Abstract]:High temperature resistance, strong inhibition of drilling fluid filtration reducer SN-K.The pH of polymerization system was adjusted by KOH and strong inhibitory ion K was introduced. The performance of SN-K was evaluated.The results show that in the brine drilling fluid, when the total quality of the drilling fluid is taken as the benchmark,After high temperature aging at 180 鈩，

本文編號(hào)：1719377