共查询到19条相似文献,搜索用时 171 毫秒
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针对碳酸盐岩油气藏在使用常规酸化措施施工时存在管柱腐蚀严重,酸岩反应速率过快,二次沉淀污染等问题,通过室内实验,优选出了合适的主体酸、缓蚀剂、助排剂和铁离子稳定剂,研制出一套适合碳酸盐岩储层的新型复合有机缓速酸液体系。室内评价了该酸液体系的各项性能指标,结果表明,该酸液体系具有良好的缓速性能、较低的腐蚀速率以及较低的表面张力。岩心模拟酸化实验结果表明,复合有机缓速酸液体系对目标气田储层天然岩心的基质渗透率改善率大于170%,基质酸化效果好于普通盐酸。说明优选的复合有机缓速酸液体系对目标气田储层具有显著的改善作用,可以应用于现场酸化增产作业。 相似文献
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针对尕斯油田进入开发中后期后常规酸液体系酸化效果逐渐变差的问题,研制了一种新型的多氢酸酸液体系。通过室内溶蚀速率、溶蚀能力以及腐蚀性能的测定,对多氢酸抑制砂岩酸化二次沉淀的机理及其特点进行了分析,并在2口注水井和1口采油井上实施了酸化作业。室内研究和现场应用结果表明,多氢酸酸液体系具有缓蚀、低伤害、深穿透、作用时间长等特点,适合用于砂岩地层的深部处理作业,对尕斯油田有较好的适应性,具有较好的应用前景。 相似文献
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常规酸化施工过程中,酸岩反应速率快,酸液穿透距离短,只能消除近井地带造成的伤害,酸化效果不理想。以HCl、HF、土酸等常规酸与甲酸、乙酸、柠檬酸等有机酸进行复配,通过测定酸岩反应溶失率,确定了三种高溶失率酸液体系:8%HF+2%甲酸、8%HF+2%甲酸+0.15%柠檬酸、10%HCl+8%HF+2%甲酸+0.15%柠檬酸;通过酸液添加剂优选及缓速性能评价,最终确定了两种缓速酸配方体系:8%HF+2%甲酸+1%缓蚀剂(WD-11)+1%铁离子稳定剂(WD-8)+1%助排剂(WD-12)+1%黏土稳定剂(WD-5);8%HF+2%甲酸+0.15%柠檬酸+1%缓蚀剂(WD-11)+1%铁离子稳定剂(WD-8)+1%助排剂(WD-12)+1%黏土稳定剂(WD-5),具有较好的缓速效果。 相似文献
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本文通过对一种泡沫酸体系进行了起泡剂、稳泡剂、粘土稳定剂及铁离子稳定剂优选,最终确定泡沫酸体系配方为15%HCl+2%HF+0.5%起泡剂A+0.5%稳泡剂B+1%缓蚀剂A+1%粘土稳定剂A+1%铁离子稳定剂E,泡沫酸化体系缓速性能良好,能够实现深穿透,达到深部解堵的目的,且能够有效解决层间矛盾突出地层布酸不均的问题。泡沫酸体系的稳定性及综合性能良好,是一种合理有效的增产增注措施,该泡沫酸体系成功应用于埕北油田243井,增产效果显著。 相似文献
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新肇油田在注水开发过程中暴露注水压力上升较快的矛盾,分析新肇油田注水压力上升的原因,提出通过优选粘土稳定剂,井网加密,深度酸化及注活性水等方法缓解注水上升速度。 相似文献
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Mona El-Said 《Desalination》2009,249(2):748-756
Large amounts of water are produced during the production of crude oil and natural gas. This water has to be analyzed to realize the correct geological formation. In this work, an extensive analysis of oil field water delivered from Gulf of Suez was carried out to determine the composition of the precipitate formed before starting waterflood operation. Cation and anions are the main interest of this analysis and are carried out using ion chromatography (IC). The data of water analysis have been used as an input data for computer software program. The scale precipitation processes in the bulk solution as well as the tendency rate and inhibitor effectiveness have been determined using jar test methods. The data arising from jar test are compared with the output of the software program to evaluate and quantify the scale precipitation. Also, the mixing waters are analyzed after precipitation to determine the consumed calcium and sulfate ions in presence and absence of inhibitor. It was found that mixing of the injection water and formation water leads to calcium carbonate and barium sulfate scaling at 60% formation water in absence of scale inhibitor. 相似文献
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The chemical composition of the aqueous phase in oil sand slurries influences bitumen recovery from oil sands, especially those containing greater than 10% fines. The composition is controlled by a combination of mixing and dilution, ion exchange with clay surfaces and precipitation of divalent ions as carbonate minerals. Elevated levels of soluble potassium in the oil sand, which appear to be a marker for degraded illite or smectitic clays, are associated with depressed bitumen recovery. These clays have a swelling character and can contribute divalent ions to the slurry by ion exchange between the clay mineral surfaces and the process water. 相似文献
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铝及其合金锡盐电解着色特效稳定剂的研究 总被引:3,自引:0,他引:3
铝及其合金电解着色中由于Sn^2+易被氧化成Sn^4+,SN^4+水解生成Sn(OH)4沉淀,使着色液稳定性下降。为提高电解液的稳定性和着色效果,研制了一种复合稳定剂,分析了其作用机理。该稳定剂与Sn^2+形成稳定络合物,阻止了Sn^2+氧化,且增大了Sn^2+沉积的阴极极化。本法具有成本低、着色快、着色效果好等优点。 相似文献
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阐述了我国氟化工行业发展现状,分析了未来氟化工行业的发展趋势,建议我国氟化工企业在面临困难与机遇的同时,应加大新产品的研究、开发力度,提升产品附加值,做好企业的转型升级工作。 相似文献