Results 21 to 30 of about 1,229 (262)

Synthesis of Alkyl Aliphatic Hydrazine and Application in Crude Oil as Flow Improvers

Energies, 2021
In this paper, alkyl aliphatic hydrazine, which is different from traditional polymer fluidity improver, was synthesized from aliphatic hydrazine and cetane bromide, and evaluated as a pour point and viscosity-reducer depressant for crude oil.
Qiang Deng, Michal Slaný, Huani Zhang, Xuefan Gu, Yongfei Li, Weichao Du, Gang Chen   +6 more
doaj   +1 more source

Characteristics of viscosity-reducer foam flooding in deep low-permeability heavy oil reservoirs

Youqi dizhi yu caishoulu
Viscosity-reducer foam flooding combines the advantages of emulsification of viscosity-reducers and selective blocking of foam to further enhance oil recovery in deep low-permeability heavy oil reservoirs during the later development stages. The suitable
DANG Faqiang, LI Songyan, LI Minghe, HE Xiaolin, LI Zhaomin   +4 more
doaj   +1 more source

Structural Design and Performance Evaluation of a Janus Silica-Based Nanosheet Composite Viscosity Reducer

Molecules
Aiming at the characteristics of high viscosity and poor fluidity of high waxy ordinary heavy oil, a Janus silica-based nanosheet composite viscosity reducer was designed and prepared in this paper.
Jingchun Wu, Bo Li, Fang Shi, Yang Zhao, Miaoxin Zhang, Liyuan Cai, Fengshan Guo, Chunlong Zhang   +7 more
doaj   +1 more source

Influences of CO₂ Absorption under Ultrasonic Vibration and Water-Reducer Addition on the Rheological Properties of Cement Paste

Applied Sciences, 2022
Research shows that ultrasonic vibratory stirring can effectively increase CO2 absorption by cement slurry. However, with the increase in CO2 absorption, the fluidity of slurry begins to decrease.
Lili Liu, Yongsheng Ji, Longhai Li, Jie Zhang   +3 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

Experimental study on thermochemical composite flooding mechanism of extra heavy oil reservoirs with erosion channels

Frontiers in Energy Research
During the steam flooding of extra heavy oil, expansion of steam chamber is difficult and erosion channels appear, which is different from conventional heavy oil.
Qiuying Cao, Haoyu Zheng, Haoyu Zheng, Jianmei Yu, Zanfu Xiong, Zanfu Xiong, Tao Wei, Shuainan Zhu, Shuainan Zhu, Ruixin Liu, Ruixin Liu   +10 more
doaj   +1 more source

A high salt tolerance and low adsorption drag reducer based on non-covalent enhancement

Petroleum Exploration and Development, 2020
To formulate fluids with flowback water, produced water directly to improve the utilization rate of recycling and reduce the adsorption damage of slick water to reservoirs, a high salt tolerance and low adsorption drag reducer was designed and prepared ...
Yingxian MA, Zhi ZHU, Jianchun GUO, Han ZHOU, Jia LI, Yujia XIONG, Leyao MA   +6 more
doaj   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

FEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg, Martine Hjeltnes, Josephine Krieger, Joshua E. Elias, Maria Stensland, Kristian Holm, Xiaojun Jiang, Chuki Khangsar, Tuula A. Nyman, Arthur Kaser, Johannes R. Hov, Tom H. Karlsen, Nicole C. Kaneider, Frode L. Jahnsen, Georg Schneditz   +14 more
wiley   +1 more source

Synthesis of a new viscosity reducer for CO₂ compound huff and puff in North Jiangsu heavy oil reservoirs and its effectiveness evaluation

Youqicang pingjia yu kaifa, 2020
Xingbei block in North Jiangsu Oilfield is a complex fault block with heavy oil and bottom water reservoir. High viscosity and poor flowability of crude oil lead to low oil recovery.
JIANG Yongping
doaj