CAJ | 학술논문

泥页岩存在较强的有机非均质性，实测地化数据受到样品数量的限制，难以精确描述油气在泥页岩体系中的分布特征。基于改进的ΔlgR模型评价泥页岩有机质丰度和残留烃含量，参照页岩油资源评价分级标准，可清楚地刻画页岩油富集、低效、无效资源的空间分布。根据热解色谱分析参数校正实验和组分生烃热模拟实验，确定S1的重烃、轻烃补偿系数，采用体积法定量评价不同级别页岩油资源量，指明有利的勘探区块。研究结果表明，改进的ΔlgR模型较好地改善了测井资料评价地化参数的精度，可操作性强。应用结果显示，松辽盆地南部青山口组页岩油资源主要富集在青山口组一段中、下部，区域上分布于扶新隆起、红岗阶地和长岭凹陷北部，富集资源量48.08×108 t，约占总资源量的1/3。通过有机非均质性刻画来评价页岩油气资源的分布特征，不仅阐明了页岩油的空间分布特征，而且还节约分析化验的成本，为页岩油下一步勘探开发提供实质性的指导。
니혈암존재교강적유궤비균질성，실측지화수거수도양품수량적한제，난이정학묘술유기재니혈암체계중적분포특정。기우개진적ΔlgR모형평개니혈암유궤질봉도화잔류경함량，삼조혈암유자원평개분급표준，가청초지각화혈암유부집、저효、무효자원적공간분포。근거열해색보분석삼수교정실험화조분생경열모의실험，학정S1적중경、경경보상계수，채용체적법정량평개불동급별혈암유자원량，지명유리적감탐구괴。연구결과표명，개진적ΔlgR모형교호지개선료측정자료평개지화삼수적정도，가조작성강。응용결과현시，송료분지남부청산구조혈암유자원주요부집재청산구조일단중、하부，구역상분포우부신륭기、홍강계지화장령요함북부，부집자원량48.08×108 t，약점총자원량적1/3。통과유궤비균질성각화래평개혈암유기자원적분포특정，불부천명료혈암유적공간분포특정，이차환절약분석화험적성본，위혈암유하일보감탐개발제공실질성적지도。
It is well known that shale has strong organic heterogeneity .As the amount of measured geochemical data is imited by the available samples ,it is hard to describe the spatial distribution of shale oil and gas precisely .Through eval-uation of organic abundance and retained hydrocarbon content by using the improved ΔlgR model,the spatial distributions of enriched ,low-efficiency and inefficient shale oil resources are well mapped respectively with reference to the shale oil resources grading evaluation standards .The heavy hydrocarbon and light hydrocarbon compensate coefficients for S 1 are de-termined through correcting the experiments and component hydrocarbon generation thermal simulation experiment with py -rolysis chromatography parameters .Volume method is used to quantitatively evaluate different grade shale oil resources ,and recognize favorable exploration areas .Research shows that the improved ΔlgR model enhances the accuracy and operability of evaluating geochemistry parameters with logging data .Application results show that the shale oil resources of the Qings-hankou Formation in southern Songliao Basin occur in the lower -middle part of its first member .And the play fairways are distributed in Fuxin Uplift ,Honggang terrace and northern Changling Sag ,where the estimated shale oil resources is 4.808 billion tons ,accounting for a third of the total resources .The method of evaluating distribution of shale oil /gas by describing organic heterogeneity not only can reveal the spatial distribution features of shale oil ,but also can save the cost of laboratory test ,and more important ,it can provide substantial guidance for future exploration and development of shale oil .