Based on core, thin section, X-ray diffraction, rock pyrolysis, CT scanning, nuclear magnetic resonance and oil testing data, the macro and micro components, sedimentary structure characteristics, of Paleogene Kong 2 Member in Cangdong sag of Huanghua depression and evaluation standard and method of shale oil reservoir were studied to sort out the best shale sections for shale oil horizontal wells. According to the dominant rock type, rhythmic structure and logging curve characteristics, four types of shale lithofacies were identified, namely, thin-layered dolomitic shale, lamellar mixed shale, lamellar felsic shale, and bedded dolomitic shale, and the Kong 2¹ sub-member was divided into four quasi-sequences, PS1 to PS4. The PS1 shale has a porosity higher than 6%, clay content of less than 20%, and S₁ of less than 4 mg/g; the PS2 shale has well-developed laminar structure, larger pore and throat size, better connectivity of pores and throats, high contents of TOC and movable hydrocarbon, S₁ of over 4mg/g, clay content of less than 20%, and porosity of more than 4%; PS3 shale has S₁ value higher than 6 mg/g and clay content of 20% - 30%, and porosity of less than 4%; and PS4 shale has lower TOC content and low oil content. Shale oil reservoir classification criterion based on five parameters, free hydrocarbon content S₁, shale rhythmic structure, clay content, TOC and porosity, was established. The evaluation method of shale oil sweet spot by using the weighted five parameters, and the evaluation index EI were proposed. Through comprehensive analysis, it is concluded that PS2 is best in quality and thus the dual geological and engineering sweet spot of shale oil, PS3 and PS1 come next, the former is more geologic sweet spot, the latter more engineering sweet spot, and PS4 is the poorest. Several vertical and horizontal wells drilled in the PS2 and PS3 sweet spots obtained high oil production. Among them, Well 1701H has produced stably for 623 days, with cumulative production of over 10000 tons, showing bright exploration prospects of Kong 2 Member shale oil.

基于岩心、薄片、X射线衍射、岩石热解、CT扫描、核磁共振和石油测试数据，黄骅坳陷沧东凹陷古近系孔二段宏观和微观成分、沉积结构特征及评价标准研究了页岩油储层和方法，筛选出页岩油水平井的最佳页岩剖面。根据优势岩石类型、韵律结构和测井曲线特征，识别出薄层白云质页岩、层状混合页岩、层状长英质页岩和层状白云质页岩4类页岩岩相，孔2 ¹亚成员分为四个准序列，PS1到PS4。PS1 页岩孔隙度大于 6%，粘土含量小于 20%，S ₁小于 4 mg/g；PS2 页岩​​层状结构发育，孔喉尺寸较大，孔喉连通性较好，TOC 和可动烃含量高，S ₁大于 4mg/g，粘土含量小于 20%，孔隙度为超过 4%；PS3页岩S ₁值大于6 mg/g，粘土含量20%～30%，孔隙度小于4%；PS4 页岩 TOC 含量低，含油量低。基于五个参数的页岩油储层分类标准，游离烃含量S ₁, 页岩节律结构、粘土含量、TOC 和孔隙度被确定。提出了基于加权5个参数的页岩油甜点评价方法和评价指标EI。综合分析，PS2质量最好，页岩油地质和工程双重甜点，PS3和PS1次之，前者更地质甜点，后者更多工程甜点，PS4为最穷的。在 PS2 和 PS3 甜点区钻的几口垂直井和水平井获得了高产油量。其中，1701H井已稳产623天，累计产量超过1万吨，显示孔二段页岩油勘探前景广阔。