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分析了沉积体内粘土化作用、沉积作用、成岩作用造成油层渗透率降低的机理。介绍了运用室内流动模拟实验技术与衍射分析、薄片鉴定、扫描电子显微镜观察等微观测试手段结合判识储层伤害过程的静、动态分析方法。利用有机色谱、质谱、热解和荧光分析技术 ,建立了高含水期油层的残余油可采性评价方法。利用系统岩屑标本和特有的荧光色特征 ,确立了油水同层段油水界面的划分原则 ,以识别储层的可采潜力。分别运用各种方法 ,对胜利油田不同井区、不同层系分布的鲕粒碳酸盐岩、致密砂岩、粘土质砂岩以及弱固结疏松砂岩储层进行了钻前油层保护、油气层改造、高含水油层的驱采、确定油水界面等技术设计。经过现场应用 ,取得了十分明显的经济效益。这一技术思路的设计与应用效果对陆相复合式油气区的勘探与开发有重要的借鉴价值。
The mechanism of the clay permeability, sedimentation and diagenesis in the sediments is analyzed. This paper introduces the static and dynamic analysis methods of indoor flow simulation experiment technique and diffraction analysis, thin slice identification, scanning electron microscopy and other microscopic testing methods to identify the process of reservoir damage. Using organic, spectral, pyrolysis and fluorescence analysis techniques, the evaluation method of residual oil recoverability in high water-cut reservoir was established. Using the systematic debris samples and the unique fluorescent color characteristics, the principle of division of oil-water interface between oil and water is established to identify the recoverable potential of the reservoir. By means of various methods, the ozonation carbonate reservoirs, tight sandstone, clayey sandstone and unconsolidated unconsolidated sandstone reservoirs distributed in different well areas and different strata of Shengli Oilfield have been pre-drilled reservoir protection, oil and gas reservoir reconstruction, Flooding of high-water-bearing reservoirs, technical design for determining oil-water interface and so on. After field application, has made very obvious economic benefits. The design and application results of this technical train of thought have important reference value for the exploration and development of continental oil and gas complex zones.