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Keywords: demulsifier
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Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193615-MS
... Abstract Thermal and flotation processes are widely used to produce bitumen from oil sand in Alberta. However, bitumen contains many surface-active components that tend to form water-in-oil emulsion stabilized by fines and/or asphaltenes. Although several demulsifiers have been proposed in the...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 3–5, 2017
Paper Number: SPE-184538-MS
... the most common methods used in order to break the emulsion and enhance the separation of oil and water. The selection of the appropriate chemical (also known as demulsifier or emulsion breaker) is performed by an old, but well-accepted method in the oil industry, the "bottle test". Even though it is...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 8–10, 2013
Paper Number: SPE-164078-MS
... POLMYER BREAKTHROUGH MEASURED IN THE BATTERY SEPARATION VESSELS OF NORTHERN ALBERTA CASE HISTORY 1 FIGURE 5 DEMULSIFIER USAGE VERSUS THE LACT BS&W FOR NORTHERN ALBERTA CASE HISTORY 1 FIGURE 2 BATTERY SCHEMATIC FROM NORTHERN ALBERTA CASE HISTORY 1 FIGURE 4 CRUDE OIL AND...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 8–10, 2013
Paper Number: SPE-164073-MS
... blends 2000's 10 Polyesteramines and blends TABLE 2 DEMULSIFICATION PERFORMANCE OF ALKOXYLATED DENDRITIC POLYESTER-BASED DEMULSIFIERS (Dose rate: 20 ppm, water cut: 45 ml, Reference: commercial product) WATER SEPARATION ml/min DEMULSIFIER 5 10 20 30 45 60 TOP OIL WATER...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 8–10, 2013
Paper Number: SPE-164109-MS
... Table 1 Demulsifier Chemistries and Physical Properties Demulsifier Chemical description Appearance & physical form RSN Solubility (1% in DIwater) Pour point (°C) Viscosity at 25°C (cP) Density at 25 °C (g/cm 3 ) pH (1% in 85:15 w/w IPA:water) Mol Wt Demulsifier A C4/C9...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 11–13, 2011
Paper Number: SPE-140860-MS
... Table 8 BS&W and Turbidity Values for Variable Surfactant SP Bottle Tests (Increased Demulsifier Dosage) SP Fluid Product, 300 ppm BS&W (% BS) BS&W (% W) Turbidity (NTU) High Surfactant C6-TAB 2 24 167 C8-TAB 0.8 0.4 356 C12-TAB 0.8 0.4 107 C14-TAB 0.8...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, April 20–22, 2009
Paper Number: SPE-121762-MS
... Abstract In the petroleum industry, water and oil emulsion formation presents an on-going production issue receiving considerable technical attention. Crude oil/water demulsification effectiveness has been tested using a new microemulsion-based demulsifier (ME-DeM) with an environmentally...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 2–4, 2005
Paper Number: SPE-93008-MS
... Abstract Chemical demulsifiers are routinely added in the oilfield to effectively resolve water-in-crude oil emulsions. As used in the common bottle test, demulsifiers in effect probe or interrogate emulsion stability strength. Emulsion stability in turn is defined by no less than three...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 2–4, 2005
Paper Number: SPE-93325-MS
... sedimentation, normally at elevated temperatures and with the addition of chemical demulsifiers. The quantitative evaluation of emulsion stability by a Critical Electric Field (CEF) technique was developed to play a significant role in chemical demulsifier research. It was found that the CEF technique is not...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 2–4, 2005
Paper Number: SPE-92969-MS
... simply adds a demulsifier to reverse the soapforming reaction and allowing the phases to separate. Unfortunately, the emulsions are constantly undergoing shear, by various items of standard production process equipment, helping to re-emulsify partially separated fluids. Furthermore, in the deepwater...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Chemistry, February 5–7, 2003
Paper Number: SPE-80241-MS
... breaking. Chemical demulsification appears therefore as an essential step in crude oil dehydration 9 . Demulsifiers are generally polymeric surfactants (copolymers ethylene oxide, propylene oxide, polymeric chain of EO/PO of alcohols, ethoxylated phenols, nonylphenols, alcohols, amines, resins, sulphonic...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 13–16, 2001
Paper Number: SPE-65011-MS
... Abstract This paper will firstly introduce the method of diffusion coefficient measuring in situ. Then the presentation is to be given that the diffusion coefficients of demulsifier AP between toluene and water are measured by isotopic labeled and liquid scintillation counting technique; The...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 13–16, 2001
Paper Number: SPE-65012-MS
... demulsification processes and products. This paper presents recent research on the interfacial behavior of interfaces between water, crude oil and several model oil systems, with and without added demulsifiers. The work involved use of drop volume tensiometer (DVT) measurements to reveal the correlation between...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 13–16, 2001
Paper Number: SPE-65383-MS
... 3 t. waterflooding demulsifier agent operation oil production liu ji-de development prospect drilling fluid formulation drilling fluid selection and formulation oil recovery upstream oil & gas spe 65383 consumption china chemical flooding methods polymer flooding oilfield...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 13–16, 2001
Paper Number: SPE-65041-MS
... Abstract There is an increasing need in the oil production to limit the use of chemicals and to search for safer products, mainly due to more severe environmental constraints. Demulsifiers performance has to be therefore improved, from the application as well as from the environmental point of...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 16–19, 1999
Paper Number: SPE-50744-MS
... oilfield chemistry rock/fluid interaction elasticity viscosity water interface demulsifier creep compliance demulsifier concentration rheological behavior asphaltene chemical treatment adsorption heptol asphaltene film creep compliance plot interface crude oil water interface interfacial...
Proceedings Papers

Paper presented at the International Symposium on Oilfield Chemistry, February 18–21, 1997
Paper Number: SPE-37269-MS
... Abstract A new family of demulsifiers is introduced that very effectively destabilizes water-in-oil emulsions such as those encountered in produced crude oil, particularly oil produced by steam injection or waterflooding. The demulsifiers are unique in their high solubility in water and can...
Proceedings Papers

Paper presented at the SPE International Symposium on Oilfield Chemistry, February 4–6, 1987
Paper Number: SPE-16285-MS
... Abstract A method for characterizing and predicting the performance of emulsion breakers has been developed which involves the relationship between the preferred alkane carbon number (PACN) of the demulsifier to the equivalent alkane carbon number (EACN) of the crude oil and the salinity of...
Proceedings Papers

Paper presented at the SPE Oilfield Chemistry Symposium, January 13–14, 1975
Paper Number: SPE-5301-MS
... general not compatible with hydrochloric acid or scale inhibitor solutions in which additives are incorporated. In most cases a small amount of demulsifier is sufficient to solve the incompatibility problem. Introduction In the course of years several methods and techniques have been developed to...

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