Overview on petroleum emulsions, formation, influence and. Heat flow curves of asphaltenes from wax deposits 3 green line, 4. Tuv sud national engineering laboratory, scottish enterprise technology park, east kilbride. Effect of resins, waxes and asphaltenes on wateroil interfacial properties and emulsion stability. The water content is again a characteristic of the oil and for stable emulsions vary from 50 to 80%. Becker crude oil waxes, emulsions, and asphaltenes by j. Type of solids encountered during petroleum production can be. Waxes in asphaltenes of crude oils and wax deposits. Effect of asphaltenes on crude oil wax crystallization energy. Crude oil waxes, emulsions, and asphaltenes becker, j. It has been demonstrated that the asphaltenes and the paraffinic waxes of the crude oil interacts under synergic mechanisms that leads to solid precipitation 33, 35,36. Chaala, benallai and hachelef 1994 studied the stability ofcrude oils with varying asphaltene and wax components.
In order to study the composition and properties of waxes and asphaltenes, they are isolated from oil by specially developed procedures. In other words, the waxes are isolated from the oil system from which the asphaltenes. Becker crude oil waxes, emulsions, and asphaltenes. However, apparently stable emulsions of some oils can be made with water contents varying from 10 to 80% water. Existence of emulsifying agents inside the crude oil such as asphaltenes and resins. Centre for flow assurance research studies cfar, institute of geoenergy engineering, school of energy, geoscience, infrastructure and society, heriotwatt university, riccarton, edinburgh eh14 4as, u. Abstract asphaltene, resins and paraffin waxes, their mutual interactions and their influence on the stability of waterinoil emulsions have been studied. Pdf effect of resins, waxes and asphaltenes on wateroil. In this paper, the interfacial properties of simulating water with different components of crude oil, including resins, waxes and asphaltenes, are investigated by interfacial tensiometer, surface viscoelasticity and zeta potential instruments and the results are then correlated with emulsion stability. In general, the asphaltenes are isolated from oils. The basic mechanism by which asphaltenes, resins, and waxes stabilize waterin oil emulsions are examined.
It is wellknown that the chemical composition of crude oil differs according to the site of production, and its grade varies from waxy to asphaltenic crude. Waxes in asphaltenes of crude oils and wax deposits springerlink. Becker oilfield waxes and emulsions are petroleum byproducts that increase the costs of production, transportation, and refining by causing equipment failures, plugged pipelines, and decreased throughput. An excess of resins may transfer more asphaltenes from the waterloil interface to the oil phase, thus reducing the emulsion stability. Crude oil waxes, emulsions, and asphaltenes pennwell books.
Crude oil waxes emulsions and asphaltenes by j r becker 1997 paperback mobi crude oil waxes emulsions and asphaltenes by j r becker 1997 paperback getting the books crude oil waxes emulsions and asphaltenes by j r. Pdf waxes in asphaltenes of crude oils and wax deposits. Crude oil waxes emulsions and asphaltenes by j r becker. Solid deposition is a common problem in crude oil production. Oilfield waxes and emulsions are petroleum byproducts that increase the costs of production, transportation, and refining by causing equipment failures, plugged pipelines, and decreased throughput. The thermodynamic equilibrium between highmolecularweight components of crude oil, such as asphaltenes, resins, and waxes, is an important parameter for the stability of crude oil. Crude oil waxes emulsions and asphaltenes byjrbecker1997paperback 11 pdf drive search and download pdf files for free. Effect of resins, waxes and asphaltenes on wateroil. Effects of waxes and the related chemicals on asphaltene. Wax and asphaltenerelated problems include solid deposits, stabilization of a wateroil emulsion, and sludge production. A crude oil at atmospheric pressure and ambi ent temperature has three main constituents. The basic mechanism by which asphaltenes, resins, and waxes stabilize waterinoil emulsions are examined. While water in oil emulsion very common in petroleum industry compared with other. Waterincrude oil emulsions stabilized by waxes from crude oil b2 crude oil b2 is characterized by a.
Pdf composition and molecular mass distribution of nalkanes in asphaltenes of crude oils of different ages and in. Chapter 10 factors affecting the stability of crude oil emulsions 183. The effect of asphaltenes on the wax appearance temperature wat. Request pdf determination of wax content in crude oil wax deposition is one of the chronic problems in the petroleum industry. A loss of only about 10% water from a stable emulsion is a sign of breakdown. Determination of wax content in crude oil request pdf. Stabilization of some crude oil emulsions by asphaltenes and reservoir fines. In typical paraffinic oils, it is expected around 20 wt % of paraffin wax in its constitution, varying the carbon number from c15 to c60 32e34.
1101 1326 1283 711 1616 290 1587 691 109 1 165 186 1067 910 662 291 939 1167 435 109 588 967 1501 938 1173 922 617 1312 1071 1461 83 150 160 431 1365 40 1062 1119 996 1381 394 933 572 830 281 1433 835 948 1491 60