Results 71 to 80 of about 7,517 (225)
An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system
Deep Underground Science and Engineering, EarlyView.The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand +5 more
wiley +1 more source
Asphaltene biotransformation for heavy oil upgradation [PDF]
, 2021 Globally, the reserves of heavy crude oil are seven times more abundant than that of light crude, and yet, they are underutilized because of their high viscosity and density, which is largely due to the presence of large amounts of asphaltenes ...
Skiadas, Ioannis +13 more
core +1 more source
Oil & Gas Science and Technology, 2018 There are several approaches to model Asphaltene deposition process in the wellbore. There are different assumptions to simplify the problem in the previous investigations for specific conditions, limiting the prediction range of the models. In this work,
Eyni Leila +3 more
doaj +1 more source
EcoEnergy, EarlyView.A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang +5 more
wiley +1 more source
Quantitative Insights into Atomic Scale Oil–Clay Adhesion Governing Shale Oil Retention and Mobility
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Atomic force microscopy reveals a clear adhesion hierarchy between shale oil and clay minerals, governed by nanoscale surface chemistry. Strong interactions on chlorite and illite arise from abundant polar sites and cation bridging, whereas weaker coupling on montmorillonite limits interfacial binding.
Chen Lv, Guanwen Lu, Guandong Su
wiley +1 more source
Some biogenic-related compounds occluded inside asphaltene aggregates [PDF]
, 2009 International audienceThe occluded compounds inside asphaltene aggregates were released from 16 asphaltenes through mild degradation processes oxidized by the H 2O2/CH3COOH system.
Liao, Zewen +7 more
core
Using Enzymatic Combinations to Reduce Asphaltene Aggregation [PDF]
, 2018 Team BACTERIA’s research aims to determine an optimal mixture of enzymes produced by fungi that would effectively reduce asphaltene aggregation in heavy crude oil, also known as bitumen.
Hensley, Jackson +10 more
core +1 more source
Oil & Gas Science and Technology, 2019 The depletion of oil reservoirs and increased global oil demand have given impetus to employ various secondary and tertiary oil recovery methods. Gas injection is widely used in both secondary and tertiary modes, though the major problem associated with ...
Mahmoudvand Saba +3 more
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A synergistic molecular strategy is demonstrated to disrupt intrinsic ππ stacking in pitch, boosting 6‐fold sulfonation, yielding a hard carbon with 0.371 nm interlayer spacing and maximized closed pores, and achieving a high reversible capacity, remarkable rate capability (205.6 mAh g−1 at 2 A g−1) and cyclic stability.
Xiang Wang +8 more
wiley +1 more source
Mechanistic Investigation of Asphaltene Deposition [PDF]
, 2016 Asphaltenes are the most polar molecules in crude oil and are responsible for a large number of deposition and fouling problems in the oil industry.
Krittin Binabdullah (3218685) +4 more
core +1 more source