Experimental Investigation of Heavy Oil Emulsion Stability: the Effect of Various Physicochemical Parameters

2021 ◽  
Author(s):  
Hongli Chang ◽  
Naresh Saravanan ◽  
Yaoze Cheng ◽  
Yin Zhang ◽  
Abhijit Dandekar ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Physicochemical Parameters ◽  
Emulsion Stability ◽  
Polymer Concentration ◽  
Water Soluble ◽  
Test Method ◽  
Oil Emulsion ◽  
Water Cut ◽  
The Stability ◽  
Mls Method

Abstract The formation of stable heavy oil emulsion, which may upset separation facilities and eventually lead to production impairment, is one of the most common issues encountered in the development of heavy oil reservoirs. This paper investigates the influence of various physicochemical parameters, including water cut, polymer status (sheared/unsheared), polymer concentration, demulsifier type and concentration, and the coexistence of polymer and demulsifiers on the stability of heavy oil emulsion. The viscosity of heavy oil emulsion is also studied at various water cut and polymer concentration. In this study, water-in-heavy oil emulsion was prepared at the water cut of 30% as the blank sample using heavy oil with API gravity of 14.5° and the synthetic brine. The effect of the water cut was investigated by both the bottle test method and multiple light scattering (MLS) method to validate the effectiveness and reliability of the MLS method. The other parameters were studied only through the MLS method. The results showed that the increasing water cut resulted in the decrease of heavy oil emulsion stability and could potentially invert the stable w/o emulsion to loose o/w emulsion at the phase inversion point where the emulsion viscosity peak occurred. Adding polymer, regardless of the polymer status, tended to reduce the stability of heavy oil emulsion, and the unsheared polymer contributed to less emulsion stability. However, the influence of polymer concentration was rather complicated. The emulsion stability decreased as polymer concentration increased, and further increasing polymer concentration enhanced the emulsion stability. A similar trend was also evidenced by emulsion viscosity with increasing polymer concentration. The addition of three oil-soluble emulsion breakers was able to break the heavy oil emulsion efficiently, whereas the water-soluble demulsifier had little demulsification effect. Furthermore, there existed an optimal concentration for the selected oil-soluble demulsifier to achieve the maximum separation. Although polymer itself could intensify the destabilization of heavy oil emulsion, it hindered the destabilization process of the heavy oil emulsion when the oil-soluble demulsifiers were added. This study will provide a comprehensive understanding of the factors affecting heavy oil emulsion stability.

Effect of the Surfactant Concentration on Sinking Electric Discharge Machining Performance with Water-in-Oil Emulsion as Dielectric

2011 ◽  
Vol 189-193 ◽  
pp. 3153-3157
Author(s):  
Yan Zhen Zhang ◽  
Yong Hong Liu ◽  
Ren Jie Ji ◽  
Bao Ping Cai
Keyword(s):  
Physical Properties ◽  
Electric Discharge ◽  
Surfactant Concentration ◽  
Emulsion Stability ◽  
Experimental Results ◽  
Machining Performance ◽  
Electric Discharge Machining ◽  
Oil Emulsion ◽  
The Stability ◽  
Water In Oil Emulsion

In this paper, the EDM performance of water-in-oil (W/O) emulsions dielectric with different surfactant concentration is investigated by correlated to its physical properties, such as viscosity and droplets size, which is predominantly determined by the surfactant concentration. Experimental results show that the stability of the W/O emulsions increases with increasing surfactant concentration, whereas the EDM performance deteriorates with increasing surfactant concentration. So, taking a comprehensively consideration of the emulsion stability and EDM performance, the concentration of surfactant must be appropriately selected.

A Study of Intravenous Emulsion Compatibility: Effects of Dextrose, Amino Acids, and Selected Electrolytes

1981 ◽  
Vol 15 (3) ◽  
pp. 184-193 ◽  
Author(s):  
Curtis D. Black ◽  
Nicholas G. Popovich ◽  
Myrella Roy
Keyword(s):  
Amino Acids ◽  
Size Distribution ◽  
Emulsion Stability ◽  
Divalent Cations ◽  
Linear Regression Analysis ◽  
Stability Loss ◽  
Ionic Concentration ◽  
Oil Emulsion ◽  
Globule Size ◽  
The Stability

Microscopic and electronic counting procedures as well as visual observations for creaming and flocculation were employed to quantitatively and qualitatively measure the effects of dextrose, amino acids, and various mono- and di-valent cations on the globule size distribution of the soybean oil emulsion 10%, Intralipid®. A linear regression analysis was demonstrated to successfully profile much of the stability data. Results indicated that divalent cations caused flocculation in the emulsion's internal phase immediately upon or shortly after the addition of their salts. The rate and extent of flocculation intensified with increasing ionic concentration. Amino acids, apparently acting at the oil/water interface, delayed divalent cation-induced flocculation; however, they did not prevent emulsion stability loss. The addition of dextrose 5% or 12.5% brought about a reduction of emulsion pH and significant globule coalescence 72 hours after admixture. Monovalent cations (i.e., Na+, K+) induced a progressive loss of emulsion stability over the 72-hour course of the experiments, the effect a function of ionic concentration. From the data, a model has been generated to predict significant changes ( p < 0.05) in Intralipid's® globule size distribution upon addition of solute and exposure to room temperature. Further recommendations of solute admixture with the intravenous emulsion are also included.

scholarly journals Optimization of (RP6000 and MAKS-9150) demulsifiers for separation of water from (Kirkuk / baba, Khbbaz) crude oil emulsion

2020 ◽  
Vol 10 (4) ◽  
pp. 69-84
Author(s):  
Dr. Mueyyed Akram Arslan ◽  
Dr. Ghassan Burhan Yaqoob
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Ph Effect ◽  
Test Method ◽  
Water Separation ◽  
Oil Emulsion ◽  
Bottle Test ◽  
Oil Emulsions

In this study oil-soluble (RP6000 and MAKS-9150) emulsion breakers have been selected for separation of water from Kirkuk / baba (50oC), Khbbaz (40oC) crude oil emulsions and their activity measured using the Bottle test method at different concentration and found the activity of RP6000 demulsified best than MAKS-9150 emulsion breakers. RP6000 separated water (100%) in (15)min., (40)ppm and in (60)min., (20)ppm of demulsified for Kirkuk/ baba Crude oil and for khbbaz Crude oil the (100%) water separation was in (15)min., (80)ppm and in (30)min., (60)ppm and PH effect, salinity, temperature and density of emulsion stability depending on literature were explained for Optimization.

scholarly journals Malaysian Crude Oil Emulsions : Stability Study

REAKTOR ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 29
Author(s):  
B. Pramudono ◽  
H. B. Mat
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Stability Study ◽  
Active Components ◽  
Oil Emulsion ◽  
Result Show ◽  
Oil Emulsions ◽  
The Stability ◽  
Stability Of Water ◽  
Water In Oil Emulsion

The stability of water-in-oil emulsion of some Malaysian crude oils was studied with particular emphasis on effect of interfacial active components existed in the crude oil, i.e. asphaltene, resin and wax. The emulsion stability was studied by measuring the volume of water or oil phase separated in variation with time, water hold up, and the heights of the sedimenting/coalescing interfaces during the separation at various temperatures. The study investigated the influence of asphaltene, resin and wax on emultion stability if it`s present in the crude oil alone, together or combination one of the others. The result show that the interfacial active component that stabilize emulsion is asphaltene. The resin and wax  do not form stale emulsion either aloneor together. There is a correlation between emulsion stability and physicochemical properties of crude oil which showed that higher asphaltene content in the crude oil would form more stable emultion. Increased temperature was found to cause instability of emultion. Keywords : emultion stability, crude oil, asphaltene, resin and wax

scholarly journals Stability of Palm Oil-based Emulsion Liquid Membrane for Succinic Acid Extraction from Aqueous Solution

2017 ◽  
Vol 19 (1) ◽  
Author(s):  
N. Jusoh ◽  
N. Othman
Keyword(s):  
Succinic Acid ◽  
Palm Oil ◽  
Liquid Membrane ◽  
Emulsion Stability ◽  
Fermentation Broth ◽  
Acid Extraction ◽  
Emulsion Liquid Membrane ◽  
Major Drawback ◽  
Oil Emulsion ◽  
The Stability

Emulsion liquid membrane (ELM) process has high potential in the separation of succinic from the fermentation broth. However, the major drawback of this technology is the stability of emulsion globules during the extraction process and the chemical involved in the liquid membrane formulation. This study investigate the stability of ELM using a greener formulation containing Amberlite LA-2 as a carrier, Span 80 and Tween 80 as a surfactant, palm oil as a diluent and sodium carbonate (Na2CO3) as an aqueous stripping agent. The emulsion stability was evaluated by observing the water-oil separation of the emulsion and microscopic image of emulsion droplets count and size. Several operating parameters including the organic to internal ratio, homogenizer speed, homogenizing time, and surfactant concentration, and surfactant blend were investigated. The results show the most stable water-in-oil emulsion was observed at 3:1 organic to internal ratio; 7000rpm homogenizer speed; 5 minute emulsification time; 3% (w/v) surfactant at HLB 8. Besides, the extraction study shows 70% of the succinic acid was extracted at 0.01M Na2CO3, 1:3 treat ratio, and 0.7M Amberlite in palm oil at optimum primary emulsion stability conditions. This indicates the potential of using palm oil based ELM for the extraction of succinic acid.

scholarly journals Model for Rheological Behavior of Crude Oil and Alkali-Surfactant- Polymer Emulsion

2014 ◽  
Vol 7 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Renyi Cao ◽  
Linsong Cheng ◽  
Y. Zee Ma
Keyword(s):  
Interfacial Tension ◽  
Crude Oil ◽  
Rheological Behavior ◽  
Chemical Components ◽  
Chemical Flooding ◽  
Oil Emulsion ◽  
Rheological Experiments ◽  
Water Cut ◽  
The Stability

Characterization of rheological behavior of alkali-surfactant-polymer (ASP) solution and oil emulsion is difficult, due to the complex chemical components and various physiochemical reactions with oil during chemical flooding. Through rheological experiments of ASP and crude oil emulsion, this paper presents the studies on influencing factors of rheological behavior, including interfacial tension, polymer and water cut, and discusses the stability mechanism of ASP and crude oil emulsion. The relationships among viscosity, interfacial tension, water cut and sheer rate were built through fitting the experimental data. The model and calculation can be used to more accurately simulate the ASP flooding in oil reservoirs.

Study of Water-Oil Emulsion Stability

2014 ◽  
Vol 657 ◽  
pp. 519-523
Author(s):  
Ştefania Roxana Buzdugă ◽  
Tudor Sajin
Keyword(s):  
Emulsion Stability ◽  
Experimental Results ◽  
Particle Sedimentation ◽  
Horizontal Pipe ◽  
Oil Emulsion ◽  
Sedimentation Process ◽  
Sedimentation Model ◽  
The Stability

This paper presents the general features about the stability of emulsions and modeling particle sedimentation process at the flow of water-oil emulsion (WOE) through a horizontal pipe. Are presented a plant and the methodology for determining the stability of WOE, and finally the experimental results that validates the theoretical equations and particle sedimentation model along the pipeline.

Effect of Nonionic Surfactant on Emulsifiability and Interfacial Activity of NaOH/HABS/HPAM Flooding System

2013 ◽  
Vol 726-731 ◽  
pp. 320-324
Author(s):  
Shi Ji Li ◽  
Rui Xia Niu ◽  
Hua Lin Song ◽  
Hua Song ◽  
Shuang Bo Sun
Keyword(s):  
Interfacial Tension ◽  
Nonionic Surfactant ◽  
Emulsion Stability ◽  
Total Concentration ◽  
Oil Emulsion ◽  
Polyoxyethylene Ether ◽  
Oil Water ◽  
The Stability ◽  
Relationship Of ◽  
The Relationship

Studying the relationship of oil-water IFT and the stability of oil emulsion will further explain oil displacement mechanism in crude oil flooding. In this article, for nonylphenol polyoxyethylene ether can resist multivalence cations, the performance of associative surfactant containing HABS and nonylphenol polyoxyethylene ether (NP), the influence of the improvement of emulsion stability on the interfacial tension were studied by evaluating the interfacial tension and emulsion stability. Results show that nonionic surfactant NP-x (x=4, 6, 10) can improve the tolerance of HABS to NaOH with low concentration, and NP-6 appears the best synergistic effect, when CNaOH is not more than 1.2wt%, the IFTeq is lower than 9.9×10-3mN/m, within the concentration range of the investigation. At the same time, NP-x can improve oil emulsion stability, when CNaOH is 0.6wt%, CHPAM is 0.18wt%, total concentration of the surfactant (ωHABS:ωNP=8:2) are 0.05wt% and 0.1wt%, decreasing the balance interfacial tension between oil and water can be regarded as the guarantee of the emulsion stability.

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