Experiment of low-tension system for improving percolation behaviors in waterflooding low-permeability reservoirs

Lai Nanjun; Ye Zhongbin; Chen Hong; Luo Pingya

doi:10.11743/ogg20070413

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Experiment of low-tension system for improving percolation behaviors in waterflooding low-permeability reservoirs
Vol. 28, Issue 4, Pages: 520-522(2007)
Online First：25 August 2007，

Published：2007
DOI： 10.11743/ogg20070413
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DOI：

Lai Nanjun, Ye Zhongbin, Chen Hong, et al. Experiment of low-tension system for improving percolation behaviors in waterflooding low-permeability reservoirs[J]. 2007, 28(4): 520-522. DOI： 10.11743/ogg20070413.

摘要

低渗透油藏注水井吸水能力低

注水压力逐渐升高

注水开发效果差。以国内低渗透注水开发油田(T油田)为例

研制了改善低渗透油藏注水开发效果的低张力体系。室内实验结果表明

低张力体系能够有效地降低残余油饱和度

增加油水两相共渗区间

改善低渗透油藏水驱渗流特征

从而改善低渗透油藏的注水开发效果。

Abstract

Waterflooding performs poorly in low-permeability reservoirs due to their low absorbing capacity and gradually increasing injection pressure.This paper takes T oilfield

a low-permeability oilfield under waterflood development program

as an example to illustrate the development of a Low-Tension System for improving waterflooding effectiveness in low-permeability reservoirs.Lab experimental result shows that the system can effectively reduce residual oil saturation

increase oil/water two-phase common seepage intervals

improve percolation behaviors

and thus enhance waterflooding efficiency in low-permeability reservoirs.