scholarly journals Molecular Interactions between Asphaltene and Surfactants in a Hydrocarbon Solvent: Application to Asphaltene Dispersion

Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1767 ◽  
Author(s):  
Mohammadali Ahmadi ◽  
Zhangxin Chen
Keyword(s):  
Oil Recovery ◽  
Oil Sands ◽  
Md Simulation ◽  
Anionic Surfactants ◽  
Deep Understanding ◽  
Water Steam ◽  
Symmetrical Molecule ◽  
Different Types ◽  
Enhance Oil Recovery ◽  
Aggregation Tendency

Heavy oil and bitumen supply the vast majority of energy resources in Canada. Different methods can be implemented to produce oil from such unconventional resources. Surfactants are employed as an additive to water/steam to improve an injected fluid’s effectiveness and enhance oil recovery. One of the main fractions in bitumen is asphaltene, which is a non-symmetrical molecule. Studies of interactions between surfactants, anionic, and non-anionic, and asphaltene have been very limited in the literature. In this paper, we employed molecular dynamics (MD) simulation to theoretically focus on the interactions between surfactant molecules and different types of asphaltene molecules observed in real oil sands. Both non-anionic and anionic surfactants showed promising results in terms of dispersant efficiency; however, their performance depends on the asphaltene architecture. Moreover, a hydrogen/carbon (H/C) ratio of asphaltenes plays an inevitable role in asphaltene aggregation behavior. A higher H/C ratio resulted in decreasing asphaltene aggregation tendency. The results of these studies will give a deep understanding of the interactions between asphaltene and surfactant molecules.

scholarly journals Fluid Interfaces

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1000
Author(s):  
Eduardo Guzmán
Keyword(s):  
Oil Recovery ◽  
Self Assembly ◽  
Deep Understanding ◽  
Functional Materials ◽  
Fluid Interfaces ◽  
Dynamic Features ◽  
Physico Chemical ◽  
Structures And Properties ◽  
Different Types

Fluid interfaces are promising candidates for the design of new functional materials by confining different types of materials, e.g., polymers, surfactants, colloids, or even small molecules, by direct spreading or self-assembly from solutions. The development of such materials requires a deep understanding of the physico-chemical bases underlying the formation of layers at fluid interfaces, as well as the characterization of the structures and properties of such layers. This is of particular importance, because the constraints associated with the assembly of materials at the interface lead to the emergence of equilibrium and dynamic features in the interfacial systems that are far from those found in traditional 3D materials. These new properties are of importance in many scientific and technological fields, such as food science, cosmetics, biology, oil recovery, electronics, drug delivery, detergency, and tissue engineering. Therefore, the understanding of the theoretical and practical aspects involved in the preparation of these interfacial systems is of paramount importance for improving their usage for designing innovative technological solutions.

Viscosity Measurements for Various Mixed Fluids Used to Enhance Oil Recovery

2017 ◽  
Author(s):  
Mahmoud O. Elsharafi ◽  
Cody Chancellor ◽  
Denzel Kinyua ◽  
Reuben Denwe
Keyword(s):  
Oil Recovery ◽  
Oil Fields ◽  
Effect Of Temperature ◽  
Fluid Viscosity ◽  
Water Mobility ◽  
Reservoir Rocks ◽  
Viscosity Measurements ◽  
Different Types ◽  
Enhance Oil Recovery ◽  
The Impact

In mature reservoirs, the goal is to increase oil mobility and decrease water mobility. As a result, oil production will be increased and unwanted water production will be decreased. Surfactant and alkaline are widely used to change the wettability of reservoir rocks from oil wet to water wet. Viscosity measurements are important in finding out the impact viscous fluids on enhanced oil recovery (EOR). This project focuses on the viscosity measurements of various mixed fluids used in oil-fields to enhance oil recovery. Two types of surfactants (A and B) and one type of alkaline were utilized throughout the work. In addition, different types of oil obtained from different areas were implemented. The viscosity of these mixed fluids was measured while observing the implications of using varying surfactant and alkaline concentrations. Lastly, the effect of temperature on fluid viscosity was monitored.

The Microorganism Mechanism: Test Evaluating of Microbial De-Oiling Efficiency

2014 ◽  
Vol 1014 ◽  
pp. 17-20
Author(s):  
Tian Yang Li ◽  
Sheng Hua Li ◽  
Hong Qing Dong ◽  
Yong Bin Li ◽  
Ai Qin Liu
Keyword(s):  
Oil Recovery ◽  
Oil Sands ◽  
Economic Benefits ◽  
Field Application ◽  
Obvious Effect ◽  
And Function ◽  
Enhance Oil Recovery ◽  
Oilfield Development ◽  
Different Sources

Microorganisms to improve oil recovery technology is a comprehensive technology of using beneficial activities and metabolites to enhance oil recovery. The obvious effect of field application and good economic benefits make it be active in the field of oilfield development in the long term. In this paper, through indoor experiments in different concentrations of microorganisms bacteria, different concentrations of nutrient solution and function time, evaluate oil sands de-oiling efficiency. Based on test results, optimize the compound of bacteria that from different sources and find out when the ratio of field and lab bacteria is 1:7, the de-oiling efficiency reach the peak of 86.47%, which further expand the mechanism of microorganisms enhanced oil recovery.

scholarly journals Investigation on the effect of active-polymers with different functional groups for EOR

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 61-68
Author(s):  
Dong Zhang ◽  
Jian Guang Wei ◽  
Run Nan Zhou
Keyword(s):  
Functional Groups ◽  
Oil Recovery ◽  
Molecular Size ◽  
Type I ◽  
Cleaning Efficiency ◽  
Sweep Efficiency ◽  
Profile Control ◽  
Branched Chain ◽  
Swept Volume ◽  
Enhance Oil Recovery

AbstractActive-polymer attracted increasing interest as an enhancing oil recovery technology in oilfield development owing to the characteristics of polymer and surfactant. Different types of active functional groups, which grafted on the polymer branched chain, have different effects on the oil displacement performance of the active-polymers. In this article, the determination of molecular size and viscosity of active-polymers were characterized by Scatterer and Rheometer to detect the expanded swept volume ability. And the Leica microscope was used to evaluate the emulsifying property of the active-polymers, which confirmed the oil sweep efficiency. Results show that the Type I active-polymer have a greater molecular size and stronger viscosity, which is a profile control system for expanding the swept volume. The emulsification performance of Type III active-polymer is more stable, which is suitable for improving the oil cleaning efficiency. The results obtained in this paper reveal the application prospect of the active-polymer to enhance oil recovery in the development of oilfields.

Black Rice Huskash is a Useful Template for Foam Stability to Enhance Oil Recovery (EOR)

2021 ◽  
Vol 56 (6) ◽  
pp. 962-970
Author(s):  
Ishaq Ahmad ◽  
Liu Chengwen ◽  
Wu Mingxuan ◽  
Xu Zhengxiao ◽  
Atif Zafar ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Foam Stability ◽  
Black Rice ◽  
Enhance Oil Recovery

Remote monitoring of the steam‐flood enhanced oil recovery process

Geophysics ◽  
1987 ◽  
Vol 52 (11) ◽  
pp. 1457-1465 ◽  
Author(s):  
E. F. Laine
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
High Frequency ◽  
Oil Sands ◽  
Seismic Velocity ◽  
Color Image ◽  
Vertical Plane ◽  
Recovery Process ◽  
Steam Flood ◽  
Borehole Seismic

Cross‐borehole seismic velocity and high‐frequency electromagnetic (EM) attenuation data were obtained to construct tomographic images of heavy oil sands in a steam‐flood environment. First‐arrival seismic data were used to construct a tomographic color image of a 10 m by 8 m vertical plane between the two boreholes. Two high‐frequency (17 and 15 MHz) EM transmission tomographs were constructed of a 20 m by 8 m vertical plane. The velocity tomograph clearly shows a shale layer with oil sands above it and below it. The EM tomographs show a more complex geology of oil sands with shale inclusions. The deepest EM tomograph shows the upper part of an active steam zone and suggests steam chanelling just below the shale layer. These results show the detailed structure of the entire plane between boreholes and may provide a better means to understand the process for in situ heavy oil recovery in a steam‐flood environment.

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