Nano-silica Hybrid Polyacrylamide/Polyethylenimine Gel for Enhanced Oil Recovery at Harsh Conditions

2021 ◽  
pp. 127898
Author(s):  
Qiang Li ◽  
Xiaorong Yu ◽  
Lili Wang ◽  
Shanshan Qu ◽  
Wenchuan Wu ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Nano Silica ◽  
Harsh Conditions ◽  
Silica Hybrid

Investigating the effect of nano-silica on efficiency of the foam in enhanced oil recovery

2017 ◽  
Vol 34 (12) ◽  
pp. 3119-3124 ◽  
Author(s):  
Seyyed Ahmadreza Amirsadat ◽  
Babak Moradi ◽  
Ali Zeinolabedini Hezave ◽  
Siamak Najimi ◽  
Mehdi Hojjat Farsangi
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Nano Silica

scholarly journals Nanoparticle modified polyacrylamide for enhanced oil recovery at harsh conditions

Fuel ◽  
2020 ◽  
Vol 268 ◽  
pp. 117186 ◽  
Author(s):  
Maje Alhaji Haruna ◽  
Jabbar Gardy ◽  
Guice Yao ◽  
Zhongliang Hu ◽  
Nicole Hondow ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Harsh Conditions ◽  
Modified Polyacrylamide

Novel Large-Hydrophobe Alkoxy Carboxylate Surfactants for Enhanced Oil Recovery

SPE Journal ◽  
2014 ◽  
Vol 19 (06) ◽  
pp. 1024-1034 ◽  
Author(s):  
Jun Lu ◽  
Christopher Britton ◽  
Sriram Solairaj ◽  
Pathma J. Liyanage ◽  
Do Hoon Kim ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
High Salinity ◽  
High Hardness ◽  
Excellent Performance ◽  
New Class ◽  
Naturally Occurring ◽  
Reservoir Conditions ◽  
Ultralow Interfacial Tension ◽  
Harsh Conditions

Summary A new class of surfactants has been developed and tested for chemical enhanced oil recovery (EOR) that shows excellent performance under harsh reservoir conditions. These novel Guerbet alkoxy carboxylate (GAC) surfactants fulfill this need by providing large, branched hydrophobes; flexibility in the number of alkoxylate groups; and stability in both alkaline and nonalkaline environments at temperatures up to at least 120°C. The new carboxylate surfactants were recently manufactured at a cost comparable to other commercial EOR surfactants by use of commercially available feedstocks. A formulation containing the combination of a carboxylate surfactant and a sulfonate cosurfactant resulted in a synergistic interaction that has the potential to reduce the total chemical cost further. One can obtain both ultralow interfacial tension (IFT) with the oils and a clear aqueous solution (even under harsh conditions such as high salinity, high hardness, and high temperature with or without alkali) with these new large-hydrophobe alkoxy carboxylate surfactants. Both sandstone and carbonate corefloods were conducted, with excellent results. Formulations were developed for both active oils (contains naturally occurring carboxylic acids) and inactive oils (oils that do not produce sufficient amounts of soap/carboxylic acid), with excellent results.

Study on Nanoparticle Stabilized Emulsions for Chemical Flooding Enhanced Oil Recovery

2021 ◽  
Author(s):  
Youyi Zhu ◽  
Peng Yu ◽  
Jian Fan
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Emulsion Stability ◽  
Chemical Flooding ◽  
Displacement Efficiency ◽  
Nano Silica ◽  
Oil Displacement ◽  
Chemical Combination ◽  
Oil Displacement Efficiency ◽  
The Stability

Abstract Chemical flooding is one of enhanced oil recovery (EOR) methods. The primary mechanism of EOR of chemical flooding is interfacial tension reduction, mobility ratio improvement and wettability changes. Recent studies showed that enhancing emulsification performance was beneficial to improve oil displacement efficiency. The formation of Pickering emulsion by nanoparticles could greatly improve the emulsifying performance. Using nanoparticles stabilized emulsions for chemical EOR application is a novel method. In this study, six different types of nanoparticles were selected, including hydrophilic nano silica, modified nano silica, carbon nanotubes and bentonite, etc. The nanoparticle combine with petroleum sulfonate could form a stable emulsion. Particle wettability were measured by using contact angle measurement (OCA20). Emulsifying intensity index was measured for different nanoparticle-stabilized emulsions. The mechanisms of nanoparticle-stabilized emulsions and relationship between emulsion stability have been investigated. The influence of dispersant on nanoparticle-stabilized emulsions also has been investigated. Nanoparticles mainly play a role in improving the stability of emulsions while surfactant play a major role in enhancing the emulsifying dispersion. The wettability of solid particles was one of the most important factors that affects the stability of emulsions. Partial hydrophobic nanoparticles were much easier to form stable emulsions than hydrophilic nanoparticles. Nanoparticles could form a three-dimensional network structure, thereby the stability of the emulsion was improved. Use of surfactant to disperse nanoparticles could further improve the emulsion stability. Finally, three nanoparticles stabilized emulsion formulations were developed for chemical flooding EOR. Nanoparticle-stabilized emulsions could improve oil displacement efficiency in chemical combination flooding. This research was used to optimize chemical combination flooding formulation and has a guidance function for application of nanoparticles in chemical flooding EOR.

Preculaatities of evaluation of the effectiveness of flow deflection technologies

2018 ◽  
pp. 93-101
Author(s):  
A. A. Kazakov ◽  
V. V. Chelepov ◽  
R. G. Ramazanov
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Production Well ◽  
Oil Companies ◽  
Efficiency Calculation ◽  
Petroleum Companies ◽  
Flow Deflection ◽  
Recovery Methods

The features of evaluation of the effectiveness of flow deflection technologies of enhanced oil recovery methods. It is shown that the effect of zeroing component intensification of fluid withdrawal leads to an overestimation of the effect of flow deflection technology (PRP). Used in oil companies practice PRP efficiency calculation, which consists in calculating the effect on each production well responsive to subsequent summation effects, leads to the selective taking into account only the positive components of PRP effect. Negative constituents — not taken into account and it brings overestimate over to overstating of efficiency. On actual examples the groundless overstating and understating of efficiency is shown overestimate at calculations on applied in petroleum companies by a calculation.

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