可视化平板模型评价注入方式对驱油的影响  

Evaluation of the Influence of Injection Patterns on Flooding Effect by Visualizing Flat Glass Model

作　　者：孙翔宇 任熵[1] 葛际江[1] SUN Xiangyu;REN Shang;GE Jijiang(School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《实验室研究与探索》2020年第9期13-17,26,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(51574266)。

摘　　要：为了能直观地观测驱油过程并更准确地分析降黏剂作用效果,采用了可视化玻璃平板模型评价方法。该模型能自制符合油藏条件的模拟地层,物模驱油过程可通过玻璃板观测并录制,再根据物模图像进行数模分析得出精确结果。用该评价方法对油田降黏剂A2和A3在均质、非均质地层条件及不同注入方式下的效果进行评价。结果显示,A3效果较好,采油率最大增值为12.9%;在非均质地层,A3体系双段塞注入比单段塞注入采收率提高9.4%;降黏过程中观测到的一些降黏驱油现象,可为驱油剂的进一步研制和改良提供帮助。In order to observe the displacement process and analyze the effect of the viscosity reducer accurately,a visual glass plate model evaluation method was used.This model can make a simulated formation meet the conditions of the reservoir.The oil displacement process of the physical model can be observed and recorded through a glass plate.Finally,a mathematical model analysis is performed based on the image of the physical model to obtain accurate results.Use this new evaluation method to evaluate the effects of viscosity reducing agents A2 and A3 under homogeneous and heterogeneous formation conditions and different injection methods.The results show that A3 has a better effect.The maximum increase of oil recovery is 12.9%.In heterogeneous formations,the double-stage plug injection has a recovery rate of 9.4%higher than that of the single-stage plug.And a series of oil displacement phenomena were observed during the viscosity reduction process,which has guiding significance for the further development and improvement of oil displacement agents.

关 键 词：可视化实验 玻璃平板模型 注入方式 采收率 驱油过程 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]