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曲流河点坝内部构型要素的定量描述,实质上是对侧积泥岩产状及侧积体规模的定量计算。在建立侧积泥岩单井识别标准的基础上,采用了3种方法进行构型要素的定量描述。一是地层倾角测井法,直接获取侧积泥岩产状;二是开发对子井方法,通过应用小层顶拉平技术、角度转换等方法计算获得侧积泥岩真倾角,进而求得侧积体规模;三是水平井方法,主要利用GR曲线对地层中泥质含量的敏感性,识别水平井钻遇泥岩夹层的厚度,结合井筒直径、井斜角、地层倾角等参数,建立计算公式求得侧积泥岩的产状,获取侧积体的规模。根据求取的产状、规模数据,完成点坝构型要素的定量描述。通过分析侧积泥岩对剩余油分布的控制作用,预测出剩余油的富集区域,并提出相应的挖潜措施。
The quantitative description of the internal configuration elements of meandering point dam is essentially the quantitative calculation of the lateral sediment yield and the lateral sediment size. Based on the establishment of single-well identification standard of side-area mudstone, three methods were adopted to describe the quantitative description of configuration elements. The first is the method of stratigraphic dip logging, which directly acquires the occurrences of lateral mudstones. The second is the development of the counter-well method. The true dip angle of lateral mudstones can be calculated by applying the method of small top leveling, angle conversion, etc., Scale; Third, the horizontal well method mainly uses the sensitivity of the GR curve to the clay content in the formation, and identifies the thickness of the horizontal well drilling the mudstone interlayer. Combining the parameters of wellbore diameter, well inclination and formation dip, the formula is established Side of the production of mudstone, access to the side of the size of the body. According to the obtained production, the size of the data to complete the quantitative description of the point dam configuration elements. By analyzing the control effect of lateral mudstone on the remaining oil distribution, the enrichment area of residual oil is predicted, and corresponding tapping measures are proposed.