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Keywords: asphaltene
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-209990-MS
... that can precipitate when mixed with light paraffinic solvents. The amount of precipitation experienced by a solution can strongly affect viscosity. No attempt was made in this work to directly model the impact of asphaltene precipitation on viscosity. The impact is in part indirectly captured through...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210344-MS
... Abstract Heavy oil production often results in the deposition of organic solids, like waxes or asphaltene. These asphaltene deposits pose a serious problem to the operator, negatively affecting the productivity of the reservoir, by reducing the permeability and altering wettability. Its...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206299-MS
... processes that occurred in the reservoir. Methods of reservoir fluid geodynamics are used to assess the extent of fluid compositional equilibrium, especially the asphaltenes, and thereby the extent of connectivity in these facies. Geochemical determinations are shown to be consistent with measurements...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206091-MS
... There was concern that archipelago molecules were being destroyed in the flash sample transfer utilized for AFM imaging of asphaltenes. Various archipelago model compounds were prepared and imaged using the same flash heating sample transfer as with asphaltenes. Figure 3 shows that AFM imaging...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201513-MS
... Zeta potential values provide information on the stability of the asphaltenes cluster; as the absolute value of the zeta potential increases, the stability of the asphaltenes clusters increases, in other words, asphaltenes become more dispersed in crude oil. Figure 6-A shows that the initial...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196028-MS
... laboratory testing flow assurance issue nanoemulsion surfactant fluid compatibility solid deposition treatment crude organic deposit asphaltene completion installation and operations production enhancement well production crude oil chemical treatment rock/fluid interaction emulsion remedial...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191582-MS
... Abstract Asphaltenes can be dispersed in crude oils in 3 different forms; molecules, nanoaggregates (of molecules) or clusters (of nanoaggregates); these forms are codified in the Yen-Mullins model and relate to the extent of solvency of the asphaltenes in the crude oil. Many reservoir studies...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191392-MS
... on the produced oil samples. It has been observed that the viscosity and density of produced oil were not improved due to emulsion formation which is a common concern for any steam injection project. However, further analysis revealed that emulsion breaking is possible with the use of asphaltene insoluble...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191455-MS
.... waterflooding Brine acid Alvarado enhanced recovery brine alone diameter recovery factor Upstream Oil & Gas concentration stability naphthenic acid asphaltene select naphthenic acid beneficially impact acid beneficially impact oil-water dynamic interface fluid-fluid interaction emulsion...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191676-MS
... Abstract The selection of optimal chemical solutions to an asphaltene challenge has been an integral part of the flow assurance strategy for a large on-shore field in Abu Dhabi. Previous studies in the field have demonstrated good performance by mixing heavy aromatic naphtha with some...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191745-MS
...). Nomenclatures Nomenclatures Abbreviation Expansion TGA Thermogravimetric Analysis DSC Differential Scanning Calorimetry SARA Saturates, Aromatics, Resins, Asphaltenes ISC In-situ Combustion EOR Enhanced Oil Recovery LTO Low Temperature Oxidation HTO High Temperature...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187362-MS
..., resins, and asphaltenes (SARA) fractions of initial and produced oil samples were compared. To better understand the fuel formation mechanism, asphaltenes surfaces were visualized by a Scanning Electron Microscope (SEM) and SARA fractions with Fourier Transform Infrared (FTIR). Combustion tube...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187278-MS
... Abstract Asphaltenes stability is a phase behavior phenomenon and affected mainly by the change in pressure and temperature. However, the changes in pressure and temperature lead compositional changes, hence, the dependency of asphaltenes stability on crude oil composition requires more clarity...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187093-MS
... after CO 2(sc) injection into the visual cell. PVT measurement solid precipitate Upstream Oil & Gas oil interface chemical flooding methods oil phase mechanism pressure decline asphaltene co 2 psig enhanced recovery oil interaction sight glass solubility visual cell injection...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181544-MS
... Abstract Deposition of organic solids high in asphaltene content (tar, bitumen) in reservoirs from natural processes is a routine occurrence around the world. Nevertheless, there is a bewildering array of deposition characteristics as shown in recent case studies. Sometimes this tar or bitumen...

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