Results 71 to 80 of about 126,181 (293)

The Preparation and Properties of a Gel Plugging Agent Made from Copolymerization of Modified Carbon Nanotube

Zuanjingye yu wanjingye
Gel plugging agents usually have the characteristic of good adaptiveness, but the existing drilling fluid gel plugging agents generally suffer from poor stability at elevated temperatures and poor strength.
Xiangyuan SONG, Qiang LAN, Shichao YANG
doaj   +1 more source

Development and Application of ZLZY310 High Temperature Drilling Fluid Cooling System

Shiyou jixie, 2022
To solve the problem of inaccuracy of MWD instruments caused by downhole high-temperature environment,ZLZY310 high-temperature drilling fluid cooling system was developed.Based on the heat exchange theory,the influence of the drilling fluid entry ...
李胜忠, 张铜鋆, 聂军, 杨智钰, 吕合军, 包秋民   +5 more
doaj  

Injectable Dual‐Network Hydrogel System for Osteochondral Repair Combining Immunomodulation, Mechanical Adaptability, and Enhanced Tissue Integration

Advanced Functional Materials, EarlyView.
A UV‐triggered injectable dual‐network hydrogel is reported as the first application of bletilla striata polysaccharide (BSP) in osteochondral repair. By integrating methacrylamide‐modified BSP and nitrobenzaldehyde‐functionalized hyaluronic acid, the system achieves immunomodulation, mechanical reinforcement, and dynamic tissue adhesion, thereby ...
Jiaming Cui, Feifei Zhou, Yuan Luo, Tao Ouyang, Huiwu Zhang, Songmiao Cheng, Qiang Li, Xu Jiang, Yingying Yu, Yicheng Wang, Hong Ming   +10 more
wiley   +1 more source

Study on Compatibility of an Anti-Contamination Agent with Cement Slurries and Drilling Fluids

Zuanjingye yu wanjingye
In deep well drilling and completion in Chuanyu area, drilling fluids mixed with cement slurries generally became highly viscous because of the poor compatibility between the drilling fluids and the cement slurries. An anti-contamination agent DRP-2S has
Hailong LI, Jinghong ZHOU, Zheng ZHANG, Lei LEI, Shunping ZHANG, Hua ZHANG, Yongjin YU   +6 more
doaj   +1 more source

Optimization of potassium Iignosulfonate drilling fluid lubricating additive [PDF]

, 2015
Оптимізовано змащувальні домішки до лігносульфонатно-калієвої бурової промивальної рідини для буріння свердловин. Із урахуванням результатів лабораторних досліджень підібрано оптимальні і робочі концентрації змащувальних домішок, розроблено рецептуру ...
Верста, О. М., Гурський, С. А., Зіньков, Р. В., Магун, М. Я.   +3 more
core  

Selective Separation of the Rare Earth Elements Dysprosium and Neodymium via Tailoring Nanocellulose Chemical Structure

Advanced Functional Materials, EarlyView.
Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani, Shang‐Lin Yeh, Karuna Anna Sajeevan, Mica L. Pitcher, Dawson Alexander, Ratul Chowdhury, Amir Sheikhi   +6 more
wiley   +1 more source

A Comb Polymer for Dispersing Micro-Manganese Weighting Material

Zuanjingye yu wanjingye
To ensure the dispersion of micro-manganese weighting material in a completion fluid, comb polymer dispersants PSH of different compositions were developed using sodium methacrylate and methyl allyl polyoxyethylene ether through free radical ...
Huaike LI, Zhiyong WANG, Yufei ZHANG, Binbin HAO, Zhengfu WANG, Wenhao WANG, Yebang TAN   +6 more
doaj   +1 more source

Dense Nanofibrillar Collagen–Silica Hybrids with High Strength and ECM‐Mimetic Tissue Integration

Advanced Functional Materials, EarlyView.
Dense nanofibrillar collagen–silica hybrids are engineered by synchronizing collagen fibrillogenesis with silica condensation, producing printable scaffolds that unexpectedly approach native extracellular matrix organization and strength. These cell‐free constructs guide endogenous cell‐infiltration, enable localized matrix remodeling, and integrate ...
Norein Norein, Shima Tavakoli, Philipp Wolf, Xie Ling, Veronica Rondahl, Klaus Leifer, Gry Hulsart‐Billström, Jöns Hilborn   +7 more
wiley   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

Advanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Multiple Synergistic Drilling Fluid System Application in Aihu Oilfield

MATEC Web of Conferences, 2017
The unstable layer of Aihu oilfield is characterized by strong hydration dispersion and weak expansion. The theory of multiple synergistic wall stabilization was applied to improve synergistic efficiency of the drilling fluid.
Liu Yingbiao, Lu Zongyu, Dang Wenhui, Zhu Zhongxi   +3 more
doaj   +1 more source