基于测井曲线互相关分析定量识别顺直型水下分流河道内部构型要素方法研究

项目名称： 基于测井曲线互相关分析定量识别顺直型水下分流河道内部构型要素方法研究

项目编号： No.41502127

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 封从军

作者单位： 西北大学

项目金额： 19万元

中文摘要： 储层构型研究是国际沉积学研究领域的热点和难点问题，也是各大老油田剩余油挖潜、提高油气最终采收率的关键技术。本申请以扶余油田J19井区泉四段曲流河三角洲前缘顺直型水下分流河道为解剖对象，在前积型构型模式建立和前积体、前积层构型要素划分的基础上，对取心井进行单井精细构型解剖，分级次建立关键井构型要素的典型测井相模式库；引入互相关分析理论，采用固定长度纵向对比法和择优循环对比法的对比原则，研发单曲线互相关算法和基于曲线重构的多曲线组合互相关算法，对比分析前积体和前积层的单曲线相关系数和多曲线组合相关系数的分布规律，达到定量识别前积体和前积层的目的。这对探讨构型要素的定量表征方法、建立精细的剩余油分布模型、提高油气最终采收率具有重要的理论和现实意义。

中文关键词： 水下分流河道；储层构型；构型要素；互相关；剩余油

英文摘要： Reservoir architecture research is a hot and difficult problem in the field of international sedimentology study, and also is the key technology of each big oilfield to predict remaining oil and to improve the ultimate recovery of oil and gas. Taking the meandering river delta front underwater distributary channel of K1q4 in J19 block, Fuyu oilfield as an example, Based on establishing progradation architecture model and identifying foreset and foreset sand body, dissection architectural elements of coring wells, grading to establish the key well architecture elements in typical logging facies model library; Introducing the cross-correlation analysis theory, use fixed length of vertical comparison method and optimal cycle comparison method, researching single well logging cross-correlation algorithm and multi-well logging cross-correlation algorithm based on the curve reconstruction, analyze the distribution of single well logging correlation coefficient and multi-well logging correlation coefficient, to identify foreset and foreset sand body. This research has important theoretical and practical significance of exploring architectural elements of quantitative identification method, establishing fine 3-D architecture model and improving oil recovery factor.

英文关键词： underwater distributary channel;reservoir architecture;architectural element;cross correlation;remaining oil