Results 31 to 40 of about 136,396 (361)

Low Thermal Conductivity Cement Slurry for Geothermal Well Cementing

Zuanjingye yu wanjingye
In geothermal energy development, the heat loss of cement sheath plays a key role in affecting heat extraction efficiency. In this study, using class G cement as the base slurry, and hollow glass microspheres and modified palygorskite fiber as composite ...
Donghong DANG, Zhongwei HUANG, Jingbin LI, Jingli LIU, Qiang REN, Yan LIU   +5 more
doaj   +1 more source

Invasion Analysis of Oil-Based Drilling Fluid Based on NMR Experiment

Cejing jishu, 2023
In order to clarify the intrusion characteristics of deep and ultra-deep oil-based drilling fluids in the southern margin of Junggar basin and its influence on nuclear magnetic resonance (NMR) logging, NMR experiments are conducted to analyze the ...
LIN Jingqi, HU Yingluan, CAO Zhifeng, LINGHU Song, WANG Xianhu, ZHANG Wei   +5 more
doaj   +1 more source

Diagnostic Utility of Testing for Novel Murine Autoantibodies for Sjögren's Disease in the Rheumatology Outpatient Setting

Arthritis Care &Research, Accepted Article.
Objective The goal was to assess the diagnostic performance of three novel autoantibodies (NA) for Sjögren's disease (SjD) by comparing NA prevalence in patients with SjD, other autoimmune rheumatic diseases (ARDs), nonspecific chronic sialadenitis (CS), and controls.
Chadwick R. Johr, Michael D. George, Vatinee Y. Bunya, Nora Sandorfi, Mina Massaro‐Giordano, Frederick B. Vivino   +5 more
wiley   +1 more source

Preparation and Application of an Instant and Quick-Acting Suspending Agent for Well Cementing Prepad Fluids

Zuanjingye yu wanjingye
Suspending agents presently used in prepad fluids for well cementing are mostly polymer/cellulose compounds. These suspending agents have a major advantage of high thickening ability; they can improve the suspending stability of a prepad fluid, thereby ...
Hao LIU
doaj   +1 more source

Premiminary tests on modified clays for electrolyte contaminated drilling fluids [PDF]

, 2015
The quality of a bentonite suspension declines in aggressive systems like brackish or saline pore water. An engineered clay (HYPER clay) was developed for sealing materials with enhanced resistance to aggressive conditions.
Bezuijen, Adam, den Hamer, Davina, Di Emidio, Gemmina, Verastegui Flores, Daniel   +3 more
core   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Ultra-High Temperature Suspension Stabilizer HPAS for Oil-Based Drilling and Completion Fluids and Its Working Mechanism

Zuanjingye yu wanjingye
Oil-based drilling and completion fluids presently in use have poor suspension stability at high temperatures up to 240℃ or higher. To deal with this problem, a strongly hydrophobic suspension stabilizer HPAS was developed based on the principle of ...
Yahao KOU, Xiaoxiao NI, Jianhua WANG, Jiaqi ZHANG, Da YIN, Jun CHI   +5 more
doaj   +1 more source

Cold machining of high density tungsten and other materials [PDF]

, 1969
Cold machining process, which uses a sub-zero refrigerated cutting fluid, is used for machining refractory or reactive metals and alloys.
Ziegelmeier, P.
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Preparation and Application of a Salt- and Shear-Resistant Thickening Agent

Zuanjingye yu wanjingye
Conventional salt-resistant thickening agents cannot satisfy the requirement of recycling gas-field waters because of their limited salt resistance and poor high-speed shearing resistance.
Shihu YU, Zhiyong ZHAO, Xiaohu ZHANG
doaj   +1 more source