Results 11 to 20 of about 1,915 (207)
Experimental Investigation and Modelling of Asphaltene Precipitation during Gas Injection [PDF]
Journal of Chemical and Petroleum Engineering, 2020 Due to the limited crude oil resources, the role of enhanced oil recovery (EOR) techniques in the production of the oil that has not been extracted during the primary and secondary oil production techniques is crucial.
Neda Hajizadeh +2 more
doaj +3 more sources
Modeling of asphaltene and wax precipitation [PDF]
, 1991 This research project was designed to focus on the development of a predictive technique for organic deposition during gas injection for petroleum EOR. A thermodynamic model has been developed to describe the effects of temperature, pressure, and composition on asphaltene precipitation.
Chung, F., Sarathi, P., Jones, R.
openaire +3 more sources
Formation damage due to asphaltene precipitation during CO2 flooding processes with NMR technique
Oil & Gas Science and Technology, 2019 In order to quantitatively evaluate the pore-scale formation damage of tight sandstones caused by asphaltene precipitation during CO2 flooding, the coreflood tests and Nuclear Magnetic Resonance (NMR) relaxometry measurements have been designed and ...
Qian Kun +4 more
doaj +2 more sources
Asphaltene Precipitation Models: A Review [PDF]
Journal of Dispersion Science and Technology, 2015 Asphaltenes are the heaviest and the most polar fractions of crude oil and are defined as a solubility class (typically soluble in toluene but insoluble in n-alkanes like n-heptane). Precipitation and deposition of asphaltenes during production, processing, and transportation of oil are major challenges faced by the oil industry. Over the last 30 years,
Subramanian, Sreedhar +2 more
openaire +3 more sources
Chemical study of asphaltene inhibitors effects on asphaltene precipitation of an Iranian oil field
Oil & Gas Science and Technology, 2020 The amount of precipitated asphaltene can be considerably reduced with pretreatment of asphaltene inhibitor, in the crude oil. Efficiency of asphaltene inhibitors mainly depends on some parameters such as pH of the oil and the chemical structure of ...
Ahmadbaygi Afshar +4 more
doaj +2 more sources
Multiphase flow modeling of asphaltene precipitation and deposition
Oil & Gas Science and Technology, 2018 Asphaltene precipitation in reservoirs during production and Enhanced Oil Recovery (EOR) can cause serious problems that lead to reduction of reservoir fluid production.
Tabzar Amir +4 more
doaj +3 more sources
Prediction of Solvent Effect on Asphaltene Precipitation at Reservoir Conditions [PDF]
Journal of Petroleum Science and Technology, 2012 The aim of the current study is to evaluate the effects of inhibitors or solvents on asphaltene precipitation under reservoir conditions. To this end, the interaction between live oil and solvent, and its side effects on precipitated/dissolved asphaltene
B. Mirzayi +2 more
doaj +2 more sources
Iraqi Journal of Chemical and Petroleum EngineeringThe solubility of asphaltenes in crude oils is predominantly influenced by variations in temperature, pressure, and oil composition. These alterations can precipitate asphaltene deposition, resulting in diminished permeability, obstruction of wells and auxiliary surface facilities, and ultimately, a reduction or cessation of production.
Ali A. Ali +2 more
openaire +4 more sources
A review on methods of determining onset of asphaltene precipitation
Journal of Petroleum Exploration and Production Technology, 2018 Oil industry suffers from flow assurance problems that occur both in upstream and downstream operations. One of the common flow assurance issues arises from precipitation and deposition of asphaltenes in various locations along the oil production path ...
Aboozar Soleymanzadeh +3 more
doaj +2 more sources
Dispersion potential of asphaltene in live oil by nanoparticles
地质科技通报, 2023 Objective In order to clarify the effect and mechanism of nanoparticles on inhibiting asphaltene precipitation in formation live oil formation under high temperature and high pressure.
Zhuanying Zhan, Jun Ni
doaj +1 more source