Comparative Coreflood Studies for Precipitation and Adsorption Squeeze with PPCA as the Scales Inhibitor

Comparative adsorption and precipitation squeezes carried out on field core materials demonstrate that significant lifetime enhancement is achievable for precipitation squeeze with respect to more conventional adsorption squeeze. Coreflood tests have been carried out under reservoir conditions (135°C) employing a poly-phosphinocarboxylate (PPCA) as the scales inhibitor. Field treatment simulations, carried out starting from coreflood data and considering the characteristics of a North Sea formation taken as the reference, confirmed the higher performance, in term of squeeze lifetime, of the precipitation squeeze with respect to adsorption. The results pointed out the importance of choosing the appropriate formulation once the operative conditions are known, in order to promote the inhibitor precipitation into the formation. Some implications of these results for the optimization of the precipitation squeeze technology for field applications, with particular emphasis to formation damage, are also discussed.     

注入水缓蚀阻垢剂KL0305A及其应用

在原用双组份双包装缓蚀阻垢剂ＫＬ０３０５的基础上研制了单一包装的性能更好的改进型缓蚀阻垢剂ＫＬ０３０５Ａ,本文介绍了ＫＬ０３０５Ａ的室内性能评价结果及在克拉玛依油田五区南注入水处理中应用的情况。ＫＬ０３０５Ａ在五区南注水中具有良好的缓蚀阻垢效果,也能适应克拉玛依油田其它各区块注入水的水质。     

KS—98缓蚀阻垢剂的研制与应用

本文简述了KS－98缓蚀阻垢剂的研制过程,合成机理和性能检测,KS－98是缓蚀成分咪唑啉衍生物,阻垢成分有机磷酸及助剂的复配物,在华北油田采油三厂里一联污水中,加量为30mg/L时,KS－98的缓蚀性能与几种常用缓蚀剂相当,而阻垢性能则与投加10mg/L常用阻垢剂时相同,KS－98和杀菌剂1227互不影响使用效果,在里一联污水站连续30天试用KS－98获得了良好的缓蚀和阻垢效果。     

SIM—1气举井固体缓蚀剂的研究与应用

高矿化度的弱酸性采出水中的CO2引起了文东油田高含水气举采油井生产管柱的严重腐蚀,研制了固体状缓释性酰胺咪唑啉缓蚀剂SIM－1（有效成分75％）,简要介绍了制备过程。室内评价表明：①直径40mm、长400mm的园柱体60℃时在油田采出水中的溶解时间,在静止水中大于15天,在流动水中大于5天。②在60℃的常压CO2饱和3％NaCl溶液中,50－100mg/L的SIM－1可有效地保护A3、N80和J55钢材。③SIM－1与油基清蜡剂配伍。④电化学测试表明SIM－1为控制阳极过程为主的混合型蚀 剂。在文东油11口气举井试用,SIM－1缓蚀剂投入井底,使其在采出液中浓度维持在100mg/L左右,投加周期为21－35天。第一周期末,井口采出水含铁平均由193mg/L降到76.9mg／L,对N80钢的腐蚀速度平均由0.7892mm/a降到0.02162mm/a,井筒挂环腐蚀速率（一口井）由0.8944mm/a降到0.07300mm/a。     

CL－1型缓蚀剂的研制

为了阻缓高含水原油对集输管线的腐蚀，研制了ＣＬ－１型输油管线缓蚀剂。这种缓蚀剂是以两种咪唑啉衍生物与联氨为主要成分的复配药剂，运用于油水共在体系．本文介绍了该剂的室内性能评价和现场试验结果。     

防垢剂BZF－2的研制与应用

桩西油田产出原油综合含水已达６０％－７０％，原用防垢剂ＨＥＤＰ已失去有效抑制集输站结垢的性能。本工作针对结垢最严重的桩５２站的应用，研制了以有机膦化合物和聚氧乙烯醚为主成份的防垢剂ＢＺＦ－２，在室内考察了不同条件下的防垢率、腐蚀性、配伍性等性能，在桩５２站进行了为期４个月的现场试验，加量为１０．３ｍｌ／ｌ、防垢率≥９８．０％，加药设备管线的腐蚀率大大降低。     

高性能的汽车防冻液腐蚀抑制剂的优化研究

将有机酸型抑制剂，有机非酸型抑制剂与无机盐型抑制剂进行优化复配，筛选出一个高性能的腐蚀抑制剂配方，按照ASTM D3306-98标准，对该配方进行测试，结果表明该配方对焊锡、铝、黄铜、紫铜、钢、铁都可以起到优异的腐蚀抑制作用，尤其对铝金属的保护作用更为突出。     

Kinetics of Natural Organic Matter as the Initiator,Promoter, and Inhibitor,and Their Influences on the Removal of Ibuprofen in Ozonation

Natural organic matter (NOM) can simultaneously act as the initiator, promoter and inhibitor in water ozonation. This study presents an explicit method that can be used to determine these rate constants via the integration of the transient steady-state hydroxyl radical (?OH) model, the R_ct concept and the pseudo first-order ozone decomposition model. The theoretical background of this method was provided, and the method was validated with model compounds. The rate constants of three NOM isolates were determined using the developed method. With these rate constants, the influences of NOM on the degradation of ibuprofen, an ?OH-reactive pharmaceutical compound, can be quantitatively described. [Supplementary materials are available for this article. Go to the publisher's online edition of Ozone Science &; Engineering for the following free supplemental resources: tables, figures, and equations.]     

超声波酸洗新型缓蚀剂的研制

本文研制成功的新型缓蚀剂适用于超声波酸洗加工。该缓蚀剂由苯并噻唑类化合物与有机胺反应,复配以含Ｍｏ,Ｃｒ等化合物。使用浓度低,缓蚀效率高,对孔蚀引发和孔蚀发展有良好的抑制作用,并可使不锈钢表面膜的修复时间大幅度下降。     

火电厂循环冷却水系统防腐技术试验与应用

针对火力发电厂循环冷却水系统溶解氧腐蚀、冲刷腐蚀及电化学腐蚀进行了分析,通过添加特效缓蚀剂使金属表面形成牢固、均匀、致密的保护膜层,使金属同循环水介质隔离而起到保护。达到了“GB50050—95”标准中铜及铜合金腐蚀速率宜小于0.005m/a的要求,现场应用效果良好。