scholarly journals Rheological properties of an ultra-high salt hydrophobic associated polymer as a fracturing fluid system

RSC Advances ◽  
2019 ◽  
Vol 9 (27) ◽  
pp. 15246-15256 ◽  
Author(s):  
Jinhao Gao ◽  
Guanghua Zhang ◽  
Lei Wang ◽  
Li Ding ◽  
Huaqiang Shi ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Rheological Properties ◽  
Network Structure ◽  
High Salt ◽  
Dense Network ◽  
Fracturing Fluid ◽  
Fluid System ◽  
System P

Surfactant and hydrophobic chains form a dense network structure, resulting in an improvement in the salt tolerance of the polymer.

scholarly journals Research and Application of an Environmental-Friendly Low-Damage and High Salt-Resistance Slick Water Fracturing Fluid System

2020 ◽  
Vol 05 (03) ◽  
pp. 131-143
Author(s):  
Qingwen Zeng ◽  
Peng Fu ◽  
Lei Meng ◽  
Hua Shi ◽  
Hong Zhou ◽  
...  
Keyword(s):  
Salt Resistance ◽  
High Salt ◽  
Fracturing Fluid ◽  
Fluid System ◽  
Environmental Friendly

scholarly journals Synthesis and properties of organoboron functionalized nanocellulose for crosslinking low polymer fracturing fluid system

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13466-13474
Author(s):  
Yanling Wang ◽  
Chuanbao Zhang ◽  
Ning Xu ◽  
Jincheng Lan ◽  
Baoyang Jiang ◽  
...  
Keyword(s):  
Fracturing Fluid ◽  
Fluid System ◽  
System P

The residual viscosity of the NBC gel drops below 100 mPa s while the temperature increases to 150 °C, but when the temperature increases above 160 °C, the residual viscosity of the NBC gel drops below 50 mPa s.

Molecular simulation study on the rheological properties of a pH-responsive clean fracturing fluid system

Fuel ◽  
2019 ◽  
Vol 253 ◽  
pp. 677-684 ◽  
Author(s):  
Guang Zhao ◽  
Zhihu Yan ◽  
Feng Qian ◽  
Haonan Sun ◽  
Xia Lu ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Molecular Simulation ◽  
Simulation Study ◽  
Ph Responsive ◽  
Fracturing Fluid ◽  
Fluid System

Development of a sulfonic gemini zwitterionic viscoelastic surfactant with high salt tolerance for seawater-based clean fracturing fluid

2019 ◽  
Vol 207 ◽  
pp. 688-701 ◽  
Author(s):  
Wenlong Zhang ◽  
Jincheng Mao ◽  
Xiaojiang Yang ◽  
Heng Zhang ◽  
Jinzhou Zhao ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
High Salt ◽  
Fracturing Fluid ◽  
High Salt Tolerance ◽  
Viscoelastic Surfactant

Properties of a novel imbibition polymer with ultra-high wetting ability as a fracturing fluid system

2020 ◽  
Vol 44 (2) ◽  
pp. 492-504
Author(s):  
Jinhao Gao ◽  
Guanghua Zhang ◽  
Lei Wang ◽  
Xiaojia Xue ◽  
Li Ding ◽  
...  
Keyword(s):  
Fracturing Fluid ◽  
Fluid System ◽  
Wetting Ability ◽  
System P

A fracturing fluid with wetting ability was obtained by a crosslinking strategy. The ultra-high wettability transformed a sandstone surface from oil-wet to water-wet.

scholarly journals Salinity Effects on Gene Expression, Morphological, and Physio-Biochemical Responses of Stevia rebaudiana Bertoni In Vitro

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 820
Author(s):  
Clara Azzam ◽  
Sudad Al-Taweel ◽  
Ranya Abdel-Aziz ◽  
Karim Rabea ◽  
Alaa Abou-Sreea ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Biochemical Parameters ◽  
Large Scale ◽  
Stevia Rebaudiana ◽  
Multiple Shoots ◽  
High Salt ◽  
Stress Factors ◽  
Stevia Rebaudiana Bertoni ◽  
Nacl Concentration

Stevia rebaudiana Bertoni is a little bush, which is cultivated on a large scale in many countries for medicinal purposes and used as a natural sweetener in food products. The present work aims to conduct a protocol for stevia propagation in vitro to produce and introduce Stevia rebaudiana plants as a new sweetener crop to Egyptian agriculture. To efficiently maximize its propagation, it is important to study the influence of stress factors on the growth and development of Stevia rebaudiana grown in vitro. Two stevia varieties were investigated (Sugar High A3 and Spanti) against salt stress. Leaves were used as the source of explants for callus initiation, regeneration, multiplication and rooting. Some stress-related traits, i.e., photosynthetic pigments, proline contents, and enzyme activity for peroxidase (POD), polyphenol oxidase (PPO), and malate dehydrogenase (MDH) were studied. Murashig and Skoog (MS) medium was supplemented with four NaCl concentrations: 500, 1000, 2000, and 3000 mgL−1, while a salt-free medium was used as the control. The data revealed that salinity negatively affected all studied characters: the number of surviving calli, regeneration%, shoot length, the number of multiple shoots, number of leaf plantlets−1, number of root plantlets−1, and root length. The data also revealed that Sugar High A3 is more tolerant than Spanti. The total chlorophyll content decreased gradually with increasing NaCl concentration. However, the opposite was true for proline content. Isozyme’s fractionation exhibited high levels of variability among the two varieties. Various biochemical parameters associated with salt tolerance were detected in POD. Namely, POD4, POD6, POD 9 at an Rf of 0.34, 0.57, and 0.91 in the Sugar High A3 variety under high salt concentration conditions, as well as POD 10 at an Rf of 0.98 in both varieties under high salt concentrations. In addition, the overexpression of POD 5 and POD 10 at Rf 0.52 and 0.83 was found in both varieties at high NaCl concentrations. Biochemical parameters associated with salt tolerance were detected in PPO (PPO1, PPO2 and PPO4 at an Rf of 0.38, 0.42 and 0.62 in the Sugar High A3 variety under high salt concentrations) and MDH (MDH 3 at an Rf of 0.40 in both varieties at high salt concentrations). Therefore, these could be considered as important biochemical markers associated with salt tolerance and could be applied in stevia breeding programs (marker-assisted selection). This investigation recommends stevia variety Sugar High A3 to be cultivated under salt conditions.

Performance of the reproducible polyvinyl alcohol fracturing fluid system

2015 ◽  
Vol 88 (11) ◽  
pp. 1884-1891 ◽  
Author(s):  
Siming Yan ◽  
Yongji Wang ◽  
Jia He ◽  
Hongdan Zhang
Keyword(s):  
Polyvinyl Alcohol ◽  
Fracturing Fluid ◽  
Fluid System

scholarly journals The full-length transcriptome of Spartina alterniflora reveals the complexity of high salt tolerance in monocotyledonous halophyte

2019 ◽  
Author(s):  
Wenbin Ye ◽  
Taotao Wang ◽  
Wei Wei ◽  
Shuaitong Lou ◽  
Faxiu Lan ◽  
...  
Keyword(s):  
Gene Expression ◽  
Salt Stress ◽  
Alternative Splicing ◽  
Salt Tolerance ◽  
Protein Kinases ◽  
Spartina Alterniflora ◽  
High Salt ◽  
Full Length ◽  
Salt Tolerant ◽  
High Salt Tolerance

ABSTRACTSpartina alterniflora (Spartina) is the only halophyte in the salt marsh. However, the molecular basis of its high salt tolerance remains elusive. In this study, we used PacBio full-length single molecule long-read sequencing and RNA-seq to elucidate the transcriptome dynamics of high salt tolerance in Spartina by salt-gradient experiments (0, 350, 500 and 800 mM NaCl). We systematically analyzed the gene expression diversity and deciphered possible roles of ion transporters, protein kinases and photosynthesis in salt tolerance. Moreover, the co-expression network analysis revealed several hub genes in salt stress regulatory networks, including protein kinases such as SaOST1, SaCIPK10 and three SaLRRs. Furthermore, high salt stress affected the gene expression of photosynthesis through down-regulation at the transcription level and alternative splicing at the post-transcriptional level. In addition, overexpression of two Spartina salt-tolerant genes SaHSP70-I and SaAF2 in Arabidopsis significantly promoted the salt tolerance of transgenic lines. Finally, we built the SAPacBio website for visualizing the full-length transcriptome sequences, transcription factors, ncRNAs, salt-tolerant genes, and alternative splicing events in Spartina. Overall, this study sheds light on the high salt tolerance mechanisms of monocotyledonous-halophyte and demonstrates the potential of Spartina genes for engineering salt-tolerant plants.

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