Results 121 to 130 of about 745 (180)

Interrelationships between Asphaltene Precipitation Inhibitor Effectiveness, Asphaltenes Characteristics, and Precipitation Behavior during n-Heptane (Light Paraffin Hydrocarbon)-Induced Asphaltene Precipitation

Energy & Fuels, 2004
Three carefully chosen chemicalsdodecylbenzenesulfonic acid (DDBSA), nonyl phenol (NP), and toluenewere studied for their asphaltene precipitation inhibition effectiveness during light-paraffin-hydrocarbon-induced asphaltene precipitation of three Saskatchewan crude oils, as well as to evaluate possible interrelationships between their inhibition ...
Hussam H. Ibrahim, Raphael O. Idem
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Aggregation thermodynamics for asphaltene precipitation

AIChE Journal, 2016
Asphaltene precipitation has been a major concern for petroleum industry due to its adverse effect on upstream production, midstream transportation, and downstream refining. As a complex phenomenon involving solubility, aggregation, and clustering, asphaltene precipitation has been extensively investigated and correlated with empirical models and ...
Meng Wang, Yifan Hao, Md Rashedul Islam, Chau‐Chyun Chen   +3 more
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Efficient Modelling of Asphaltene Precipitation

SPE Annual Technical Conference and Exhibition, 1993
AbstractAn efficient modelling technique based on the representation of the precipitated asphaltene as a pure dense phase is presented. The success of the approach is based on the division of the heaviest component in the oil into a non-precipitating and a precipitating component. The characterization of these components is discussed.
L.X. Nghiem, M.S. Hassam, Ram Nutakki, A.E.D. George   +3 more
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Modeling Technique of Asphaltene Precipitation

Proceedings of SPE Permian Basin Oil and Gas Recovery Conference, 2001
Abstract Study of three phase equilibrium has been seen from many literatures. Most research on modeling of asphaltene precipitation has remained in qualitative description stage. Even though quantitative calculation of asphaltene precipitation can be seen from some reports.
Min Li, Ping Guo, Shilun Li
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Role of Asphaltene Precipitation in VAPEX Process

Journal of Canadian Petroleum Technology, 2008
Abstract VAPEX (vapour extraction) is an oil recovery process, in which heavy oil or bitumen is mobilized by injection of a low molecular weight hydrocarbon solvent and is drained by gravity to a horizontal production well. It has attracted considerable attention because of its potential applicability to problematic reservoirs and the ...
P. Haghighat, B.B. Maini
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Asphaltene Prediction and Prevention: A Strategy to Control Asphaltene Precipitation

SPE/PAPG Annual Technical Conference, 2012
ABSTRACT Asphaltene Precipitation and Deposition is a serious problem which can reduce the oil recovery by reducing reservoir permeability and altering the wettability. It can plug wells and flow lines through deposition and also cause separation difficulties at the separation facilities.
Muhammad Ali Buriro, Muhannad Talib Shuker   +1 more
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Effect of precipitating environment on asphaltene precipitation: Precipitant, concentration, and temperature

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016
Abstract The objective of this work was to investigate the effect of precipitating environment on asphaltene precipitation such as, precipitant (n-alkanes: C5, C7, C9, C12, C14), asphaltene concentration, and temperature. A combination of gravimetric and spectroscopic techniques was used for the detection and quantification of asphaltene ...
Zihao Yang, Shiyao Chen, Hao Peng, Mingyuan Li, Meiqin Lin, Zhaoxia Dong, Juan Zhang, Yuxi Ji   +7 more
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Revisiting the methodology for asphaltenes precipitation

Journal of Petroleum Science and Engineering, 2019
Abstract The world increase in energy demand has directed the petroleum industry to exploit unconventional oil reserves such as the Brazilian Pre-Salt reservoirs. Production conditions verified in those reservoirs enhance the occurrence of asphaltene precipitation as well as the correlated problems.
Denisson Santos, Monique Amaral, Elvio B.M. Filho, Raul S. Dourado, João A.P. Coutinho, Gustavo R. Borges, Elton Franceschi, Cláudio Dariva   +7 more
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Modeling Asphaltene Precipitation in Reservoir Simulation

Industrial & Engineering Chemistry Research, 2000
Asphaltene precipitation is a serious problem during oil recovery processes. Many models have been developed to predict the precipitation. This paper summarizes these precipitation models and implements the model of Nghiem et al. in The University of Texas Compositional simulator to predict the effects of asphaltene precipitation on fluid flow through ...
Xiangjun Qin, Peng Wang, Kamy Sepehrnoori, Gary A. Pope   +3 more
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Study of Asphaltene Precipitation by Calorimetry

Energy & Fuels, 2007
Can calorimetry bring new input to the current understanding of asphaltene precipitation? In this work, two types of precipitation were studied by means of calorimetry: addition of n-heptane into asphaltene solutions and temperature/pressure variations on a recombined live oil.
Sylvain Verdier, Frédéric Plantier, David Bessières, Simon I. Andersen, Erling H. Stenby, Hervé Carrier   +5 more
openaire   +1 more source