Results 31 to 40 of about 8,964 (222)
Energies, 2023 Some oil wells in the Tahe oilfield have been reported to produce extremely heavy oil due to asphaltene deposition. To enhance the flow of crude oil through the wellbore, engineers adopted the use of light oil from nearby wells to dissolve the heavy ...
Zuguo Yang +6 more
doaj +1 more source
Asphaltene-Based Porous Carbon Nanosheet as Electrode for Supercapacitor
, 2018 Asphaltene with high aromaticity derived from coal direct liquefaction residue is a favorable precursor to prepare new carbon materials because it is easy to polymerize or cross link.
Xiaodong Tian +7 more
core +1 more source
Isolation of Asphaltene-Degrading Bacteria from Sludge Oil
Makara Journal of Science, 2015 Sludge oil contains 30%–50% hydrocarbon fractions that comprise saturated fractions, aromatics, resins, and asphaltene. Asphaltene fraction is the most persistent fraction.
Pingkan Aditiawati +1 more
doaj +1 more source
Carbon Energy, EarlyView.A dual‐phase flash Joule heating strategy converts pre‐pyrolyzed biomass into structurally tunable carbon materials from waste feedstocks. By decoupling current‐driven thermodynamic input and duration‐dependent kinetic relaxation, the process maps the transition from amorphous carbon to few‐layer turbostratic graphene and turbostratic nanographite ...
Jiawen Zeng +9 more
wiley +1 more source
Oil & Gas Science and Technology, 2017 The effects of aluminum oxide nanoparticles on the removal of asphaltenes from an Iranian crude oil (Soroush) using a ceramic membrane with pore size of 0.2 µm were investigated.
Rezakazemi Mashallah +3 more
doaj +1 more source
Hydrogen donor‐assisted visbreaking of Canadian oil sands bitumen
The Canadian Journal of Chemical Engineering, EarlyView.Abstract High‐viscosity Canadian oil sands bitumen requires processing for efficient transportation and refining. Partial upgrading technologies, primarily based on thermal processing, can effectively reduce, or even eliminate, the use of costly diluent, increase bitumen quality and market value, potentially decrease greenhouse gas (GHG) emissions, and
Yi Zhang, Mohamed Ali, Jinwen Chen
wiley +1 more source
Kinetic and reaction pathway of upgrading asphaltene in supercritical water
, 2015 Experiments of upgrading asphaltene in Supercritical Water (SCW) were conducted in autoclaves with sealed gold tube reactors to elucidate the reaction pathway and reaction kinetics.
Li, Ning, Yan, Bo, Xiao, Xian-Ming
core +1 more source
Demulsifying agent simplified model for offshore oil wells
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This article addresses key challenges in offshore petroleum production caused by multiphase flow instabilities, such as slug flow and emulsion formation. Traditionally, severe slugging is mitigated by increasing wellhead backpressure through partial choke valve closure. In this context, a simplified dynamic model—the fast offshore wells model (
Fernanda Bernardi de Souza +5 more
wiley +1 more source
, 2022 It is well-known that asphaltenes are a polydisperse fraction present in crude oil with a broad distribution of sizes and molecular characteristics. However, in practice, asphaltenes are often treated both in the laboratory and in modeling work as a ...
Francisco M. Vargas (1358826) +3 more
core +1 more source
Mitigating Asphaltene Deposition in CO2 Flooding with Carbon Quantum Dots
EnergiesCarbon capture, utilization, and storage (CCUS) technology has emerged as a pivotal measure in mitigating global climate change. Notably, CO2-EOR is esteemed for its dual function of sequestering CO2 and enhancing oil recovery.
Qi Liu +7 more
doaj +1 more source