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由大庆化工研究中心研制完成的“一种聚酰亚胺纳滤膜的制备方法”获得国家发明专利。采用该技术制备的聚酰亚胺纳滤膜可用于润滑油酮苯脱蜡溶剂的回收,方法简单易行,对节能降耗具有重要意义。 相似文献
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针对姬塬油田注入水富含SO_4~(2–),在注水过程中易与高矿化度地层水中的Ba~(2+)、Sr2+形成难溶性硫酸钡锶垢的问题,采用纳滤膜脱除SO_4~(2–)成垢离子防止垢的生成。研究了源水经纳滤处理前后与地层水的配伍性及其对岩心的损害,考察了该技术在姬塬油田的现场应用效果。研究结果表明,采用纳滤膜处理技术可有效降低注入水中的SO_4~(2–)含量,防止结垢产生的地层损害。经过纳滤处理后,源水中SO_4~(2–)含量由2499.88 mg/L降至428.03 mg/L,SO_4~(2–)脱除率达到82.9%。纳滤水与地层水以不同比例混合后的结垢量均小于源水与地层水混合的结垢量,纳滤水的阻垢率为70.4%数74.2%;纳滤处理前后,源水对岩心的伤害率分别为46.13%和1.47%,纳滤水可有效抑制对岩心的损害。现场试验表明,注入水经纳滤脱SO_4~(2–)工艺处理后,姬W注水站注入水中的硫酸根减少80%以上;试验区36口井注水压力平均降低1.41 MPa,11口吸水剖面测试井剖面厚度平均增加1.35 m,显示出良好的处理效果。 相似文献
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为评价SAGD高盐高硬高硅稠油采出水中纳滤膜在深度处理中的适应性,通过研究操作压力、操作时间、回收率等工艺参数对纳滤膜的影响规律,制定了纳滤膜的软化除硅与脱盐对策,实现SAGD采出水淡化后应用于注汽锅炉。研究结果表明,NF90膜对高盐高硬高硅采出水具有良好的适应性。操作压力为0.6 MPa时,NF90膜对Na~+及Cl~-的截留率为85%,对Mg~(2+)和SO_4~(2-)具有100%的截留率,对Ca~(2+)的截留率在90%以上,对SiO_2的截留率达85%;回收率达80%,且保持了稳定的产水通量,系统出水水质达到油田注汽锅炉进水水质指标。 相似文献
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乙苯脱氢多孔膜反应器的研究 总被引:5,自引:0,他引:5
采用管形结构的填充床纳滤不对称γ-Al2O3/α-Al2O3膜反应器,考察了膜反应器的操作条件:进样速度、吹气流量、水和乙苯摩尔比和反应温度等对转化率和苯乙烯选择性的影响。结果表明,膜反应器中乙苯脱氢转化率以及苯乙烯选择性均高于相同操作条件下填充床反应器中的值,转化率平均提高约4.5%,苯乙烯选择性约2%左右。试验还表明,降低进样速度,提高乙苯和水的比例或提高吹气速率均可提高膜反应器中乙苯转化率,同时可保持选择性基本不变。并且用动态毛细凝聚法和扫描电子显微镜研究了纳滤膜反应前后的稳定性。结果表明,膜的Kelvin孔径在反应前后有明显变化。 相似文献
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采油过程中,酸化是油气井增产、注水井增注的主要措施。砂岩基质酸化和碳酸岩基质酸化都是在低于储层破裂压力的条件下向地层中注入酸液,溶解地层中的可溶物质,清除孔隙或裂缝中的堵塞物质,从而使油气井增产或注水井增注的一种工艺措施。本文着重讨论了砂岩酸化的设计计算方法,并由此建立一套基质酸化设计方法。 相似文献
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《Oil and Energy Trends》2008,33(5):6-7
This section summarizes downstream developments of the previous month. Exploration & Production are covered in 'Upstream Review'.
An upsurge of violence in Iraq threatened a recovery in output that began earlier this year. Production in the northern fields hit a post-invasion high of 620,000 bpd in March, rising by 180,000 bpd in one month. Fighting in the south, however, cut production there by more than 100,000 bpd as government troops tried to subdue Shi'ite militias in and around Basrah. Oil installations damaged in the south included a pipeline and a pumping station. The Iraqi government nevertheless announced that oil production would reach 2.9 mn bpd by the year's end, requiring an increase of nearly 500,000 bpd over April 2008 levels. Foreign help is to be sought via a series of technical service agreements and - later this year - an upstream licensing round. Japan's Ministry of Economy, Trade and Industry says it wants a bigger role for Japanese oil companies in both the upstream and downstream sectors in Iraq. Kurdistan says it is negotiating with Baghdad to export oil produced from new oil fields there. The central government does not recognize production agreements drawn up by the Kurdistan Regional Government. The EU - desperate for gas to fill its Nabucco pipeline - has approached Iraq for up to 1 bn cfd. 相似文献
An upsurge of violence in Iraq threatened a recovery in output that began earlier this year. Production in the northern fields hit a post-invasion high of 620,000 bpd in March, rising by 180,000 bpd in one month. Fighting in the south, however, cut production there by more than 100,000 bpd as government troops tried to subdue Shi'ite militias in and around Basrah. Oil installations damaged in the south included a pipeline and a pumping station. The Iraqi government nevertheless announced that oil production would reach 2.9 mn bpd by the year's end, requiring an increase of nearly 500,000 bpd over April 2008 levels. Foreign help is to be sought via a series of technical service agreements and - later this year - an upstream licensing round. Japan's Ministry of Economy, Trade and Industry says it wants a bigger role for Japanese oil companies in both the upstream and downstream sectors in Iraq. Kurdistan says it is negotiating with Baghdad to export oil produced from new oil fields there. The central government does not recognize production agreements drawn up by the Kurdistan Regional Government. The EU - desperate for gas to fill its Nabucco pipeline - has approached Iraq for up to 1 bn cfd. 相似文献
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