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依据钻井、测井资料,充分应用沉积学理论,对尕斯库勒油田下干柴沟组上段沉积相进行分析,在研究区共识别出三角洲亚相、滨湖亚相、浅湖亚相及半深湖亚相等4种沉积相类型。通过单井相和剖面相分析,认为研究区下干柴沟组上段沉积期湖水面波动频繁,小规模的湖侵—湖退过程形成了5个4级层序,其决定了研究区沉积微相的垂向演化和叠置格局。通过对研究区沉积相进行研究,划分出沉积微相,明确了沉积微相的空间展布规律,对指导研究层段下一步的研究和勘探开发具有重要意义。
Based on the well logging and well logging data and the application of sedimentology theory, the sedimentary facies of the upper Ganchaigou Formation in the Gasculer oil field are analyzed. In the study area, the delta subfacies, the Binhu subfacies, the shallow lake subfacies, Semi-deep lake sub-equivalent of four sedimentary facies. Through the analysis of single-well facies and profile facies, it is considered that the surface of lower Ganchaigou Formation in the study area fluctuated frequently during the sedimentary period, and there were five 4th-order sequences in the small-scale lake invasion-retreat process, which determined the sedimentary micro Vertical evolution of the facies and superimposition patterns. Through the study of sedimentary facies in the study area, the sedimentary microfacies are divided and the spatial distribution regularity of sedimentary microfacies is clarified. It is of great significance to guide the further research and exploration of the research interval.