扇三角洲前缘储层构型及其控油作用——以赵凹油田赵凹区块核桃园组三段Ⅳ3~1厚油层为例
发布时间:2018-10-19 20:07
【摘要】:为了揭示扇三角洲前缘厚层砂体内部复杂结构特征,明确其对开发过程中油水运动的控制作用,以储层构型分析为指导,利用岩心、测井以及生产动态资料,在构型级次识别和划分的基础上,对赵凹油田赵凹区块核桃园组三段Ⅳ3砂层组扇三角洲前缘构型及其控油机理进行了研究。结果表明:研究区发育3类夹层,即泥质夹层、钙质夹层和泥质砂砾岩夹层;将核桃园组三段Ⅳ3~1厚油层划分为7个5级构型单元;在5级构型单元等时地层格架内,根据单一水下分流河道(或河口坝)的定性、定量识别标准,确定出4级构型单元的规模、空间形态及平面展布规律;建立了基于4级构型的3类储层构型控油模式,其中纵向相变和横向相变控油模式下的剩余油主要分布于水下分流河道中上部和非河道低渗相带内,构型单元内不稳定夹层控油模式下的剩余油主要富集在夹层下部。本次研究对改善油田开发效果具有重要意义。
[Abstract]:In order to reveal the complex structural characteristics of thick sand body in the front of fan delta and its controlling effect on oil and water movement during development, the core, well logging and production performance data are used to guide the reservoir configuration analysis. Based on the recognition and classification of configuration, the fan delta front configuration and its oil control mechanism of the third member 鈪,
本文编号:2282221
[Abstract]:In order to reveal the complex structural characteristics of thick sand body in the front of fan delta and its controlling effect on oil and water movement during development, the core, well logging and production performance data are used to guide the reservoir configuration analysis. Based on the recognition and classification of configuration, the fan delta front configuration and its oil control mechanism of the third member 鈪,
本文编号:2282221
本文链接:https://www.wllwen.com/kejilunwen/diqiudizhi/2282221.html