Enhanced oil recovery by branched-preformed particle gel injection in parallel-sandpack models

被引：174

作者：

Sang, Qian ^{[1
]}

Li, Yajun ^{[1
]}

Yu, Long ^{[1
]}

Li, Zhenquan ^{[2
]}

Dong, Mingzhe ^{[1
,3
]}

机构：

[1] China Univ Petr Huadong, Coll Petr Engn, Qingdao 266580, Peoples R China

[2] Sinopec Shengli Oilfield Co, Geol Sci Res Inst, Dongying 257015, Peoples R China

[3] Univ Calgary, Dept Chem & Petr Engn, Calgary, AB T2N 1N4, Canada

来源：

FUEL | 2014年 / 136卷

关键词：

Branched preformed particle gel; Viscoelastic particle; Heterogeneous reservoir; Enhanced oil recovery; Sweep efficiency; CONFORMANCE-CONTROL; WATER;

D O I：

10.1016/j.fuel.2014.07.065

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Branched-preformed particle gel (B-PPG) is a newly developed chemical agent for enhanced oil recovery in heterogeneous reservoirs. In this paper, laboratory experiments are performed to characterize the morphology and rheological properties of a B-PPG suspension in water, investigate its transport behavior through heterogeneous porous media, and study its performance in enhanced oil recovery in heterogeneous reservoirs. In the flow and displacement experiments, parallel-sandpack models are used to represent the heterogeneous porous media. The experimental results show that the viscoelasticity of the B-PPG suspension makes it a promising agent for both conformance control and enhanced oil recovery in heterogeneous reservoirs. Both B-PPG flow and tertiary oil recovery tests in parallel-sandpack models demonstrate that injection of a B-PPG slug can effectively improve the sweep efficiency and recover more residual oil in the low permeability zones. For a more heterogenous model, the effect of B-PPG on the sweep efficiency becomes more noticeable. This is because the viscoelastic B-PPG particles not only increase the viscosity of the water phase, but also divert the flow to the unswept low permeability zones. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：295 / 306

页数：12

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