摘要
通过大量岩心的典型沉积构造与测井图像的对比,建立一套较完整的典型沉积层理和沉积构造识别模式,充分发挥成像资料在识别沉积构造上的优势,建立典型沉积构造的地质模式/倾角模式/电成像模式/成像特征描述等一体化的成像解释图版,为地层沉积微相研究提供重要依据。灵活的比例可调性允许从不同尺度进行分析,通过宏观与微观相结合,建立沉积微相成像解释图版的方法,进行地层的沉积微相精细研究。利用成像测井具有定向性的优势确定古水流向,推测相应的古物源方向;在资料允许的条件下进行多井成像对比,分析并预测砂体空间展布特征和砂体加厚的方向,为寻找更有利的储层提供指导意见。南海西部油田的应用实践表明,成像测井沉积学研究的重要应用不仅可以节约取心成本,提高油田沉积学研究的精度,而且还可以提高油气田的勘探效率。
Through a large number of contrasts between core and images, sum up a set of model diagrams which are used to recognize sedimentary bedding and sedimentary structures on FMI image data, and this approach greatly exert the advantage of FMI image data in sedimentary bedding recognition, effectively guide geologists to further search the potential information on the images, and provide an important evidence for the next step microfacies analysis. FMI images allow for analysis from different scales, through a combination of macro and micro, establish microfacies explaining board for detailed study of microfacies. Determine subfacies and microfacies mainly based on the sedimentary structures studied before and the conventional logging data, seismic data and so on. Determine paleocurrent direction and infer sediments provenance direction. Information al- lowed can make multi-well correlation, analysis and predict of spatial distribution of sand and the direction of thickening, which will be advantageous to later exploration. Applications suggested that： imaging sedimentology studies can not only save costs and improve accuracy of the sedim- entlogy studies, but also improve the efficiency of oil＆gas reservoir exploration.
出处
《测井技术》
CAS
CSCD
北大核心
2011年第4期363-370,共8页
Well Logging Technology
关键词
成像测井
岩性
沉积构造
沉积微相
古水流方向
南海西部油田
imaging logging, lithology, sedimentary structures, microfacies, paleocurrent direction, Western South China Sea Oilfield
