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 were predicted via Miller’s entropy modified polymer solution theory under reservoir conditions. Then, the adjustable parameters of the model ...

Asphaltenes are known as the 'cholesterol' of crude oil. They form nano-aggregates, precipitate, adhere to surfaces, block rock pores and may alter the wetting characteristics of mineral surfaces within the reservoir, hindering oil recovery efficiency. Despite a significant research effort, the structure, aggregation and deposition of asphaltenes under flowing conditions remain poorly understoo...

the organic deposition particularly asphaltenes has many detrimental effects on the oil industries, such as plugging in pipelines, wellbore and facilities and subsequently, considerable reduction in well productivity.asphaltenes are the most polar fractions, which they have been dispersed as colloidal clusters in crude oil. the accumulation of these clusters lead to the flocculation of colloids...

BACKGROUND AND HYPOTHESIS In the oil industry, asphaltenes are known for their tendency to aggregate in solution and to deposit on surfaces, with both properties being connected with operational problems associated with recovery, production and refining. Interactions involving asphaltenes and other crude oil components have been a major aspect of investigation in attempting to understand the fu...

The organic deposition particularly asphaltenes has many detrimental effects on the oil industries, such as plugging in pipelines, wellbore and facilities and subsequently, considerable reduction in well productivity.Asphaltenes are the most polar fractions, which they have been dispersed as colloidal clusters in crude oil. The accumulation of these clusters lead to the flocculation of colloids...

Asphaltene deposition in the pore-throats of reservoir rock reduces permeability, which leads to a reduction oil production. The amount deposited asphaltene is generally expressed by an equation that sums three types deposition: surface deposition, pore-throat plugging, and entrainment asphaltene. plugging accelerated increase asphaltene, termed snow-ball effect. Wang Civan's model commonly use...

Asphaltene precipitation/deposition is considered a problem of formation damage, which can reduce the oil recovery factor. In addition, asphaltenes be deposited in pipelines and surface installations, causing serious complications guaranteeing runoff, decreasing production wells. The precipitation minimized by reducing flowrate or using chemical inhibitors. Analyzing stability trend petroleum v...