【作者】 刘伟；

【导师】 陈钢花；

【作者基本信息】 中国石油大学 ， 地球探测与信息技术， 2007， 硕士

【摘要】 随着测井、计算机技术的发展及油田勘探、开发程度的不断提高,测井岩相分析技术已经成为寻找薄层油藏,进行精细储层评价、提高油气田采收率的重要手段之一。济阳坳陷中生界地层主要为河流相、湖泊相沉积,由于经历了较大的构造运动,发育有多个区域不整合面,后期火山活动剧烈,使得该区岩性十分复杂,既有沉积岩又有火山岩。同时孔隙结构复杂,矿物胶结类型多样,导致储层非均质现象非常明显,测井资料解释难度大。在分析岩性与其测井响应之间关系的基础上,总结了该区15种岩性的测井响应特征。应用常规测井资料建立了该区测井相-岩相数据库及其数值模型,并依据测井岩相分析结果,应用岩心分析资料、试油试井资料,对储层岩性进行分类,按不同储层岩性类型,建立了该区测井储层参数的精细解释模型。基于上述原理,应用VC语言编写了相应的软件,并对该区实际资料进行了处理分析,处理结果表明,该方法在本区具有良好的应用效果,应用所开发的方法及软件能准确、有效地进行岩性分析、储层参数解释和粘土类型识别,可以大大提高储层解释精度。更多还原

【Abstract】 With the development of well logging and computer and with the enhancement of exploration and development of oilfield, the log facies analysis technique has been one of the important means to search thinly bedded reservior, make formation evaluation and raise oil recovery ratio.The sedimentary in jiyang basin of mesozoic are mostly river facies and lacustrine facies. As the great tectonic movement, there are many planes of unconformity here. At the last stage, there was a lot of volcanic action, which leaded to the lithology here was very complicated, which inclued sedimentary rock as well as eruptive rock. On the other hand, the structure of the pore is very complicated and the cement is mutiplex. All this reasons lead to the reservoir heterogeneity is very obvious, so the logging interpretation is very difficult.The relationship between lith-facies and log parameters was described. The logging response characteristics of all kinds of rocks in this area were summarized. Using the established database of electrofacies and the lith-facies, 15 kinds of lithology were recognised. The interpretation model of reservoir parameters was established. In this paper, the type of clay was analysed according to spectral gamma-ray log data and core data of clay.On the basis of this principle, the author has programmed a software system using VC and applied it to 32 wells. The result shows it is fit to this area. This method can analyse lith-facies, interpretate reservior parameters and identify clay mineral type correctly and effectively.更多还原