天然气与石油2017，Vol.35Issue(6)：59-65,7.DOI:10.3969/j.issn.1006-5539.2017.06.011
高含水期油田的注采关系调整和挖潜开采研究
Research on Injection-Production Relationship Adjustment and Further Development in High Watercut Oilfield
摘要
Abstract
At present, the document about vector injection-production in high Water cut Oilfield mostly provides a qualitative or strategic conclusion, which lacks quantitative research and has certain limitations in practical application. In this paper, an evaluation method of volumetric sweep efficiency is established by using numerical simulation technique after isosaturation front surface is introduced to define volumetric sweep efficiency. Based on the method, a vector injection-production sweep efficiency evaluation is conducted and relation charts between volumetric sweep efficiency and injection-production ratio are mapped out which offer a guide to injection and production. Research shows, for homogeneous reservoir, intensive injection and production provides a better development effect. The infilling horizontal well should produce on a high liquid level ( 600 m 3/d ) , the original water well should inject at a low injection-production ratio ( 0. 5 ~ 0. 75 ) and the new inverted water well should inject at a high injection-production ratio(corner well 1. 2~1. 4, edge well 1. 0~1. 2). The results of pilot well group in Oilfield Q indicate that vector injection-production could improve water flooding sweep efficiency and enhance the oil recovery, which has a great value of application and dissemination for those similar offshore oilfields after well pattern adjustment.关键词
体积波及系数/反九点井网/五点井网/矢量注采/提高采收率Key words
Volumetric sweep efficiency/Inverted nine spot pattern/Five spot pattern/Vector injection-production/Enhancing oil recovery引用本文复制引用
周焱斌,许亚南,杨磊,龙明,于登飞..高含水期油田的注采关系调整和挖潜开采研究[J].天然气与石油,2017,35(6):59-65,7.基金项目
国家科技重大专项"海上油田丛式井网整体加密及综合调整油藏工程技术应用研究"(2011 ZX 05024-002-007) （2011 ZX 05024-002-007）
