Miscible CO 2 -SAG flooding is an enhanced form of flooding, which mitigates the inadequate -crude oil interaction by adding a soaking period just after breakthrough (BT). The addition process results in improvements recovery residual during secondary process, may vary across reservoir, and lead to differential changes distribution permeability decline wettability variation due asphaltene preci...

Abstract This study introduces a comprehensive and cost-effective approach to diagnose treat the asphaltenes precipitation problems in different downhole conditions. The proposed has been successfully applied two oil wells (Well-I, Well-II) located Western Desert of Egypt. produce moderate high gravity with low content using Electrical Submersible Pumps (ESP). In such operating conditions, soli...

Bio-asphalt is a binder composed of bio-oil and petroleum asphalt under certain conditions. In this study, sludge (wt 10%) was added into matrix to prepare bio-asphalt for the first time. The effects on performance essence interaction between components were investigated using test, molecular dynamics (MD) simulation, density functional theory (DFT). Chemical analysis showed that ester compound...

Asphaltenes are a group of exotic hydrocarbons found in bitumen and other forms heavy crude oil derivatives. These hydrocarbons, with elusive chemistry, give derivatives (CODs), such as bitumen, its characteristic properties. In they form stable aggregates by interacting molecules, called asphaltene aggregates. Attempts have been made to enhance nanoparticles, like graphene Such studies success...

Laser desorption ionization (LDI) and ion mobility mass spectrometry (IM-MS) are applied to study molecular weight distribution and cross sections of petroleum asphaltene (ASPH) and deasphaltened oils (DAO). Ion mobility data confirmed the presence of gas-phase aggregation in LDI experiments. Most of the molecules with MW > 3000 g/mol in LDI result from gas-phase aggregation. Two-dimensional (2...