Results 11 to 20 of about 1,229 (262)
BMC Chemistry, 2023 Different from common hydrophobic associative polymers, a new hydrophobic associative polyacrylamide (HAPAM) with ultra-long side chains was synthesized and aimed to be used as drag reducer in this work.
Xianwu Jing +3 more
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Research and Application of Polycarboxylic Acid Water Reducer with Different Molecular Weight [PDF]
E3S Web of Conferences, 2020 In this paper, a polycarboxylic water reducing agent was synthesized by using Methylallyl polyethylene glycol (HPEG) with molecular weight of 1200, 2400, 2800 and 3400 under the same conditions, C80 concrete tests were performed on these four molecular ...
Liu Bobo +4 more
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Molecules, 2023 The urgent problem to be solved in heavy oil exploitation is to reduce viscosity and improve fluidity. Emulsification and viscosity reduction technology has been paid more and more attention and its developments applied.
Fan Zhang +4 more
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Melatonin reduces lipid peroxidation and membrane viscosity [PDF]
Frontiers in Physiology, 2014 Lipid peroxidation (LPO) occurs as a result of the oxidative deterioration of polyunsaturated fatty acids (PUFA), i.e., those that contain two or more carbon–carbon double bonds. The most apparent feature of the oxidative breakdown of lipids is rancidity, a problem that was recognized centuries ago during the storage of fats and oils.
Reiter, Russel J. +2 more
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Youqicang pingjia yu kaifa, 2022 The implementation of CO2 flooding in heavy oil reservoirs with low-permeability is currently the main comprehensive utilization technology for enhanced oil recovery.
GUO Deming +5 more
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Journal of King Saud University: Engineering Sciences, 2022 The addition of surfactants and nanoparticles in minimizing wax deposition related problems such as flow assurance is considered an attractive alternative among other techniques but limited researches have been carried out in investigating the method ...
S.D. VijayaKumar, J. Zakaria, N. Ridzuan
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Energies, 2023 Sustained casing pressure (SCP) is a common problem during an entire life span of oil and gas wells. When conventional methods are deployed to resolve the issue, the methods seem to have some setbacks by being unable to seal microcracks in the wellbores.
Ninghui Dou +5 more
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Application of flue‐gas foam in thermal‐chemical flooding for medium‐depth heavy oil reservoirs
Energy Science & Engineering, 2019 Heat loss in wellbore during steam injection is considerable due to the deep burial of medium‐depth heavy oil reservoirs, leading to a low steam quality in the bottom of well.
Qingjun Du +5 more
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Petroleum Exploration and Development, 2010 There isn't any mature technique to develop ultra-heavy oil reservoirs in the Shengli Oilfield because of large oil viscosity, deep and thin layer, high rate of resin and asphaltene.
Lei Tao +4 more
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Applied Sciences, 2023 It is generally known that the two most crucial elements of concrete that depend on the slump value of the mixture are workability and compressive strength.
Ahmed Salih Mohammed +5 more
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