特种油气藏2024，Vol.31Issue(6)：106-113,8.DOI:10.3969/j.issn.1006-6535.2024.06.013
二类油层含水率与聚合物驱时机关系图版建立及应用
Establishment and Application of Relationship Charts between Water Content in Class Ⅱ Oil Reservoirs and the Timing of Polymer Flooding
摘要
Abstract
To address the issue of poor geological conditions of the Class Ⅱ reservoirs in Daqing Oilfield,the com-plex development law of polymer flooding and the difficulty in determining the timing of polymer flooding,a typical geological model of the second-class reservoirs was established by numerical simulation method.Taking the water content index commonly used in oilfield development as the control parameter,the relationship between water con-tent and polymer flooding timing and its influence on the development effect of polymer flooding were studied,and then the relationship between water content and polymer flooding timing was established.The method of determining the reasonable timing of polymer flooding in the Class Ⅱ reservoirs blocks is given.The research shows that the ear-lier the polymer injection timing is,the better it is for the Class Ⅱ reservoir blocks,but the timing of stopping poly-mer injection should generally be selected when the water content of the block reaches 96.00%to 97.00%.The ap-plication results show that the established chart is practical and effective for the actual block,and can clearly show the development law of polymer flooding.This chart has important predictive guiding significance for determining a reasonable polymer flooding timing for polymer flooding or the blocks that are about to be polymer flooding.关键词
二类油层/含水率/聚合物驱时机/影响规律/关系图版Key words
Class Ⅱ oil reservoirs/water cut/timing of polymer flooding/influence patterns/correlation chart分类
能源科技引用本文复制引用
魏长清,周丛丛..二类油层含水率与聚合物驱时机关系图版建立及应用[J].特种油气藏,2024,31(6):106-113,8.基金项目
中国石油重大科技专项"中高渗油田特高含水期大幅度提高采收率技术研究"(2023ZZ22) （2023ZZ22）
