喇嘛甸油田北北块一类油层后续水驱驱替特征及控水挖潜方法研究

发布时间：2018-06-28 10:39

本文选题：一类油层 + 无效循环　；参考：《东北石油大学》2017年硕士论文

【摘要】：众所周知大庆油田是我国目前最大的油田,然后油田经历长期的注水开发、聚合物驱和后续水驱后,存在严重的低效或无效循环,导致能耗高,使我们开采成本日渐加大,收到效果却甚微。本文选取北北块开展聚合物驱后续水驱驱替特征及控水挖潜方法研究,在无效循环、剩余油研究基础上,通过对岩石矿物、孔隙、渗透性几方面的对比,通过分析宏观微观剩余油分布特征,通过开展数值模拟和统计分析新钻井水淹层解释结果,搞清了一类油层后续水驱阶段无效循环分布特征,优选出后续水驱控水挖潜的潜力,形成一套后续水驱调整挖潜方法。随着无效循环识别方法的完善和结构单元认识的深化,通过近几年技术攻关,针对不同无效循环分布类型,以结构界面理论为指导,结合无效循环厚度,采取有针对性的治理对策,达到控制无效循环、降低能耗、改善开发效果的目的。喇嘛甸油田北北块位于油田18排以北地区,处于喇嘛甸短轴构造的北部倾没区,油层从沉积时间上可划分为四个沉积单元:葡Ⅰ1、葡Ⅰ21、葡Ⅰ22,分别开采葡Ⅰ1-2油层和其它油层。自1973年投入开发,基础井网采用了分注合采的600m和300m井距反九点法面积注水井网。
[Abstract]:It is well known that Daqing Oilfield is the largest oil field in China at present, and then the oilfield has experienced long-term water injection development, polymer flooding and subsequent water flooding, there is a serious inefficient or ineffective cycle, resulting in high energy consumption, and our production costs are increasing day by day. The results have been minimal. In this paper, the characteristics of polymer flooding followed by water flooding and the method of controlling water potential are studied in the north block. On the basis of the study of invalid cycle and remaining oil, the rock mineral, pore and permeability are compared. By analyzing the distribution characteristics of macroscopic and micro residual oil, by developing numerical simulation and statistical analysis of the interpretation results of the new drilling water flooded zone, the characteristics of ineffective cycle distribution in the subsequent water flooding stage of a kind of oil layer are clarified, and the potential of subsequent water flooding control to tap potential is selected. A set of subsequent water drive adjustment method is formed. With the improvement of the identification method of invalid cycle and the deepening of understanding of structural unit, according to the different distribution types of invalid cycle in recent years, according to the different distribution types of invalid cycle, guided by the theory of structural interface, combined with the thickness of invalid cycle, The aim is to control invalid cycle, reduce energy consumption and improve development effect. The northern block of Lamadian Oilfield is located north of No. 18, and is located in the northern dip area of Lamadian short-axis structure. The reservoir can be divided into four sedimentary units in terms of deposition time: Portugal I 1, P I 21 and P I 22, respectively. Since its development in 1973, the water injection pattern of 600m and 300m interval has been used in the basic well pattern.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357.6

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