渭河油污染经济损失估算

为了估算中国石油天然气集团公司2009年在陕西渭南发生柴油泄漏事件对河南省沿黄各地所造成的直接经济损失,提出了因油污染而引起的经济损失计算方法.利用该算法评估柴油泄漏对河南省的自来水水源、工业、发电、渔业、物资和人力方面所造成的影响,估算得出河南省的直接经济损失至少2 918.6万元.提出的估算方法可为类似河流污染事件的经济损失评估提供参考.     

国际油价预测之新思想——分时间段类型研究

站在全新的角度——在不同类型的时段分别研究油价预测模型的优劣.通过小波变换对油价序列进行奇异性分析,将油价序列所处的时间段分为两类：含奇异点时段,不含奇异点时段.并在不同类型的时段分类比较多元回归模型、延迟因变量回归模型、神经网络模型的拟合预测效果,最终得出无论何时进行油价预测,在上述模型中效果最为理想的是神经网络模型.     

Method of Predicting Water Content in Crude Oil Based on Measuring Range Automatic Switching

Water content in output crude oil is hard to measure precisely because of wide range of dielectric coefficient of crude oil caused by injected dehydrating and demulsifying agents.The method to reduce measurement error of water content in crude oil proposed in this paper is based on switching measuring ranges of on-line water content analyzer automatically.Measuring precision on data collected from oil field and analyzed by in-field operators can be impressively improved by using back propogation (BP) neural...     

玫瑰香精油化学成分分析

应用气相色谱-质谱联用(GC/MS)方法,定性定量地分析了山东平阴玫瑰精油、新疆玫瑰精油、北京妙峰山玫瑰精油和保加利亚玫瑰精油的化学成分,各鉴定了29、37、23和24个成分.它们的主要成分均为香茅醇及其脂类、香叶醇、芳樟醇、玫瑰醚和丁香酚,其中北京妙峰山玫瑰油与其他油品有较大差异.各种香精物质含量上的差异使得这几种玫瑰油的香气产生了微妙的出入.详细地讨论了这4种玫瑰油的化学成分与香气间的关系,指出国内玫瑰油的不足之处,为提升我国玫瑰精油的品质提供借鉴和依据.     

旋流-静态微泡浮选柱净化含油废水试验研究

为了提高含油废水处理效果、简化处理工艺,提出了以旋流一静态微泡浮选柱为核心的水处理工艺,在自行研制的试验装置系统上,研究了循环泵压力、柱体过流速度、混凝剂种类及投加量、表面活性剂投加量、油水pH值等主要工艺参数对模拟含油废水除油效果的影响.结果表明:以上因素均对脱油率有较大影响,在优化条件下,除油率可达95.7%,旋流-静态微泡浮选柱对含油废水有较高的净化能力.     

Strength and chloride resistance of blended Portland cement mortar containing palm oil fuel ash and fly ash

This paper presented a study on the strength and chloride resistance of mortars made with ternary blends of ordinary Portland cement (OPC), ground palm oil fuel ash (POA), and classified fly ash (FA). The mortar mixtures were made with Portland cement type I containing 0-40wt% FA and POA. FA and POA with 1wt%-3wt% retained on a sieve No.325 were used. The compressive strength and rapid chloride penetration depth of mortars were determined. The results reveal that the use of ternary blended cements produces ...     

大豆油酯交换制备生物柴油的研究

利用K2CO3和Al2O3制备固体碱催化剂,将它用于大豆油和甲醇酯交换制备生物柴油。通过实验考察醇油摩尔比,催化剂用量,反应温度和反应时间4个工艺条件对生物柴油产率的影响,最后确定最佳的反应条件为：醇油摩尔比9∶1,催化剂用量2%,温度60℃,反应时间4h,在此条件下得到的生物柴油产率为72.3%。     

Oil monitoring methods based on information theory

To evaluate the wear condition of machines accurately,oil spectrographic entropy,mutual information and ICA analysis methods based on information theory are presented. A full-scale diagnosis utilizing all channels of spectrographic analysis can be obtained. By measuring the complexity and correlativity,the characteristics of wear condition of machines can be shown clearly. The diagnostic quality is improved. The analysis processes of these monitoring methods are given through the explanation of examples. The availability of these methods is validated and further research fields are demonstrated.     

Geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin

We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause. The structural situation, the hydrocarbon accumulation mechanism and unsuccessful well data collected from 1996 to 2005 were studied. The results show that the main geological factors associated with unsuccessful exploration wells are a lack of effective source rocks and a lack of effective traps, as well as the migration-accumulation conditions that exist in this area. The basin was reformed by Meso-Cenozoic tectonic evolution. Multi-stage tectonic activities have both positive and negative effects on hydrocarbon accumulation. Source rocks distribution, effective migration channels, effective traps and the tectonic evolution effects on hydrocarbons should be the key objects for further studies.     

Remaining oil distribution in Ng3^3 bottom water reservoir of Lin 2-6 fault-block in Huimin depression and potential tapping in horizontal well

Oil reservoirs with secondary bottom water in Ng33 members (in Guantao formation, Paleogene system) of Lin2-6 fault block in Huimin depression (Bohai Bay Basin) have entered the late stage of ultra-high water-containing-exploitation. Oil exploita-tion from vertical wells is becoming more and more inefficient. The reservoir type, with water displacing oil and the remaining oil distribution are specifically studied in order to improve the efficiency of the recovery ratio. An integrated scheme for adjusting horizontal wells has been designed and the key technique of the scheme optimized. The study shows that: 1) the positive rhythm of fluvial depositional features is the internal cause of the flooding of oil reservoirs while water injection, injection-production patterns and accumulative petroleum production are the external causes; 2) oil-water driving patterns have transferred from edge water ad-vancing to bottom-water-coning; distribution of the remaining oil mainly concentrates in the upper rhythm and top of the middle rhythm in Ng33 members; 3) a great deal of remaining oil is enriched in high positions of faults, in axes of tiny structures, in stagna-tion areas among water-injection wells and oil-wells and in tectonic saddle areas with sparse wells. Compared with vertical wells, horizontal wells have advantages such as high recovery, high off-take potential, high critical output, large controlling areas and long time of bottom-water breakthrough.