白河榆树坪延10潜力区地层划分与对比

Stratigraphic Division and Comparison of Baihe Yushuping Yan 10 Potential Area

吴起油田白河油区勘探开发初期获得较好工业油流,显示出该区域具有很好的开发潜力,尤其是延10层。地层划分与对比对于研究小层油砂体展布特征等工作尤为重要,还会影响油田储量计算过程中含油面积的大小、有效厚度准确确定,同时对油田勘探开发具有重要意义。对潜力区98口钻井的测井资料进行分析对比,在骨架剖面的基础上,逐渐由近及远,最后闭合复查,实现整个研究区地层的统一划分。将主力层延10油层划分为延101、延102两个亚组,主力亚组延101又细分为延1011、延1012两个小层;延1012综合解释水层,主要研究含油层为延1011,平均层厚为12.76m。

In the early stage of exploration and development of Baihe Oilfield in Wuqi Oilfield,good industrial oil flow was obtained,which shows that this area has good development potential,especially the Yan 10 layer.Stratigraphic division and comparison are particularly important for studying the distribution characteristics of oil sand bodies in small layers.They also affect the key factors for accurate determination of the size of oil-bearing area and effective thickness in the process of oilfield reserves calculation,and are of great significance to oilfield exploration and development.In this paper,the logging data of 98 wells in the potential area are analyzed and compared.On the basis of the skeleton section,gradually from near to far,and finally closed for review,to achieve a unified division of the entire study area.The main layer Yan 10 oil layer is divided into two subgroups,Yan 101 and Yan 102,and the main subgroup Yan 101 is subdivided into two sub-layers,Yan 1011 and Yan 1012;Yan 1012 comprehensively explains the water layer,so this study mainly studies oil-bearing The layer is extended 1011,and the average layer thickness is 12.76m.