中国陆相页岩油测井评价技术方法新进展

与北美地区的海相页岩油相比，中国陆相页岩油普遍具有岩石矿物成分复杂、储层非均质性强、单层厚度薄和岩性岩相纵向变化快等典型特点，测井岩性识别、储层参数精确计算及品质精细划分难度极大，这给测井准确评价页岩油“甜点”带来了巨大挑战。针对目前松辽、鄂尔多斯、准噶尔和渤海湾等盆地页岩油勘探区域测井评价遇到的诸多难点，重点讨论了以四维数字岩心、实验室多状态二维核磁共振及井场移动式全直径岩心核磁共振为代表的页岩油岩石物理实验新方法和以元素测井矿物组分高精度计算、电成像沉积构造识别、水平井解释及压裂效果评价为代表的处理评价新技术，并以系列关键核心技术突破构建了中国陆相页岩油测井评价方法体系，展现了近年来页岩油测井评价技术在中国的创新与发展。

New advances in methods and technologies for well logging evaluation of continental shale oil in China

Compared with marine shale oil in North America, continental shale oil in China has such characteristics as complex mineral composition, strong heterogeneity, thin single-layer thickness, and rapid vertical changes of lithologies and lithofacies. Thus, there are great difficulties in logging lithology identification, accurate calculation of rock mechanical parameters and fine division of reservoir qualities, which bring great challenges for the well logging evaluation of sweet spots in shale oil reservoirs. In view of the difficulties encountered in the logging evaluation of shale oil exploration areas in Songliao, Ordos, Junggar, and Bohai Bay basins, this paper mainly explores the new methods for shale rock physical experiment, represented by four-dimensional digital core, laboratory multi-state two-dimensional NMR spectroscopy, and onsite movable full-diameter rock core NMR spectroscopy; the new well logging technologies, represented by high-precision calculation of mineral components based on elemental logging, identification of sedimentary structure based on image logging, horizontal well interpretation, and fracturing evaluation.A complete technical system for well logging evaluation of continental shale oil has been formed, which shows the innovation and development of well logging evaluation technology of shale oil in recent years.