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注水开发不但是油田提高采油速度 ,增加日产量提高效益的主要手段 ,而且是其提高采收率延长开发周期的主要手段。本文在介绍了文 85块的地质概况和开发历程的基础上 ,分析了该块进入中高含水期后注水开发中存在的主要问题、水淹级别的界定和剩余油的分布规律后 ,以明确的思路根据该块开采状况和剩余油特点有针对性地部署挖潜方案 ,取得了令人满意的开发效果。 相似文献
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当油田开发进入到后期,随着油井产能的下降,需要分析剩余油的分布规律,采取最优化的采油工艺技术措施,开采出更多的剩余油,保持油田长期的高产和稳产,达到油田开发的产能指标。因此,有必要研究油田开发后期的采油工艺技术措施,不断提高油田开发的经济效益,更好地完成油田生产任务。 相似文献
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丁富寿 《中国石油和化工标准与质量》2013,(6):240
经过长期注水开采,油田进入开发中后期,油层内油、气、水交错渗流,剩余油的挖潜难度加大。剩余油分布研究主要从剩余油分布研究方法、剩余油分布特征、剩余油分布控制因素三方面进行。本文总结了剩余油分布及挖潜技术状况和最新进展,提出完善井网、周期注水、补孔改层等挖潜措施。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献
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我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉 相似文献
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Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969. 相似文献
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A refined nonlinear value of the main parameter of a material, i.e., the elongation modulus versus the instant temperature value, was suggested for introduction into the computational algorithm of tempering stresses. 相似文献