Controlled delivery and release of surfactant for enhanced oil recovery by nanodroplets

Nourafkan, Ehsan and Hu, Zhongliang and Wen, Dongsheng (2018) Controlled delivery and release of surfactant for enhanced oil recovery by nanodroplets. Fuel, 218 . pp. 396-405. ISSN 0016-2361

Full content URL: https://doi.org/10.1016/j.fuel.2018.01.013

Documents
Controlled delivery and release of surfactant for enhanced oil recovery by nanodroplets

Request a copy
[img] PDF
Fuel_2.pdf - Whole Document
Restricted to Repository staff only

1MB
Item Type:Article
Item Status:Live Archive

Abstract

Chemical-based oil recovery method has promising applications but suffers the problem of large quantity of
chemical loss inside the reservoir. This work proposes an innovative concept of using nanodroplets as carriers for
surfactants/polymers and control their release inside porous media to increase oil recovery in water-wet reservoirs.
Comparing to conventional surfactant flooding, the proposed concept could not only reduce the adsorption
of surfactant on rock surface, but also ease the problem of unstable surfactant slug injection and release
surfactant slowly inside a reservoir. The oil recovery efficiency was evaluated for micelles and nanodroplet forms
of surfactants blend in a customized core flooding system and differential pressures were monitored to evaluate
the injection stability of flooding fluids. The retention of surfactants was analyzed by high-performance liquid
chromatography after the core flooding tests. The experiments confirm the advantages of nanodroplets as surfactant
carriers. The results show that the new approach promoted tertiary oil recovery around ∼8%, while
reducing the adsorption of surfactants almost half on the surface of sandstone rock comparing to the micelle
form.

Keywords:Enhance oil recovery, Controlled delivery, Nanodroplets, Surfactant retention, Micelles injection
Subjects:H Engineering > H890 Chemical, Process and Energy Engineering not elsewhere classified
Divisions:College of Science > School of Mathematics and Physics
ID Code:36992
Deposited On:13 Sep 2019 08:29

Repository Staff Only: item control page