The vapor extraction (VAPEX) process, a solvent-based enhanced oil recovery process has been found promising for some heavy oil reservoirs. In this work, the VAPEX process is studied using a compositional simulator on a number of single-block and multiple block fractured systems. PVT data of one of an Iranian heavy oil reservoir are used to tune the equation of state. Effects of fracture sp...

Heavy oil is considered as a multipurpose complex mineral, and the processing of heavy oils “complex problem”, aimed both at increasing yield light fractions “transport” ability oil, extracting metals from asphaltene resinous fraction. The recovery (such vanadium, nickel, titanium, iron, etc.) was performed by cavitation extraction technology with use hydrocarbon solvents chemical extractants, ...

Heavy oil pollution caused by tanker accidents is one of the most important environmental issues in the world. The pollution is related to the impact on marine organisms, since heavy oil consists of toxic substances such as polycyclic aromatic hydrocarbons (PAHs), heavy metals and benzol. However, the effect of heavy oil on the fish immune system is not well understood. In the present study, th...

CO2 injected in the reservoir of McElroy Field, TX, for a CO2 ̄ood was in the supercritical state. Supercritical CO2 ̄uid is capable of extracting light and intermediate hydrocarbons from rocks but is unable to extract heavy hydrocarbons and asphaltics. Therefore, plugging of asphaltics in reservoir rocks and a consequent reduction in injectivity and recovery may result when CO2 only is used in ...

With the growing demand for energy and the depletion of conventional crude oil, heavy oil in huge reserve has attracted extensive attention. However, heavy oil cannot be directly refined by existing processes unless they are upgraded due to its complex composition and high concentration of heteroatoms (N, S, Ni, V, etc.). Of the variety of techniques for heavy oil upgrading, supercritical water...

this paper presents results analyses of specific potential blowout scenarios for subsea oilpipelines between the coast of mainland of iran and khark island in the persian gulf. the analyses have been carried out with the sintef oil spill contingency and response (oscar) 3-dimensional model system.some hypothetical three-day blowout scenarios with light and heavy iranian oil have been investigat...