Results 11 to 20 of about 16,778 (265)

Effective Photocatalytic Degradation of Methyl Orange Using V2O5@ZnO Nanocomposite under UV and Visible Irradiations

International Journal of Electrochemical Science, 2020
Today, reclamation and reuse of wastewater from textile, food and pharmaceutical industries are the big challenges for researchers to decrease the diseases and pollution in the world.
Dichen Tan, Huaiyuan Long, Huaan Zhou, Yu Deng, Erping Liu, Song Wang, Shunyuan Zhang   +6 more
doaj   +1 more source

Drilling performance analysis of impregnated micro bit [PDF]

Mechanical Sciences, 2022
The cutting mechanical properties of impregnated diamond bit depend on the performance of its cutting elements. Aiming at the factors affecting the cutting element performance of impregnated diamond bit, the laboratory rock breaking experiment of ...
D. Song, Z. Ren, Y. Yang, Y. Chen, G. Nie, L. Tan, H. Peng, Z. Li, X. Chen, M. Li, H. Ren, L. Zuo   +11 more
doaj   +1 more source

Effect of Nitric Acid on the Low Fluorescing Performance of Drilling Fluid Lubricant Based Animal and Vegetable Oils

Journal of Spectroscopy, 2013
After synthesis of mixed fatty acid triethanolamine ester surfactant based on animal and vegetable mixed oils, the reaction solution was added into 4% (wt/wt) liquid nitric acid or 9% (wt/wt) solid nitric acid as eliminating fluorescent agent continuing ...
Feng-shan Zhou, Zheng-qiang Xiong, Bao-lin Cui, Feng-bao Liu, Guang-huan Li, Jin-ran Wei, Hua Cui   +6 more
doaj   +1 more source

Super-amphiphobic, strong self-cleaning and high-efficiency water-based drilling fluids

Petroleum Exploration and Development, 2020
Based on the amphiphobic theory on underground rock surface, a super-amphiphobic agent is developed and evaluated which can form nano-micro papilla structure on rock, filter cake and metal surface, reduce surface free energy, prevent collapse, protect ...
Guancheng JIANG, Xiaoxiao NI, Wuquan LI, Xiaohu QUAN, Xuwu LUO   +4 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

Impact of the drilling fluid system on the effectiveness of a high pressure jetting assisted rotary drilling system

Heliyon, 2020
An enhanced drill bit combining high pressure fluid jetting with a conventional rotary drilling system incorporating a tailored drilling fluid was designed to improve drilling performance in hard crystalline rock.
Timon Echt, Thomas Stoxreiter, Johann Plank   +2 more
doaj   +1 more source

Research and Application of the Oil-absorbing Viscous Polymer for Oil-Based Drilling Fluid Plugging

Zuanjingye yu wanjingye
Lost circulation materials (LCMs), after being wetted by oil-based drilling fluids, have their sliding ability decreased and retention ability increased, causing them to be easy to flow back from the fractures through which the mud is lost and ...
Wentang LIU, Xianmin ZHANG, Ning HUANG, Xueqing JIANG, Xudong LI, Hai YANG, Fang GUI   +6 more
doaj   +1 more source

An experimental drilling apparatus used for evaluating drilling risks related to natural gas hydrate

MethodsX, 2020
Some countries are trying to drill and exploit natural gas hydrate (NGH). However, the disturbance effects of drilling on the stability of NGH-bearing sediments are unclear.
Tian-Jia Huang, Yu Zhang, Yi Wang, Xiao-Sen Li, Zhao-Yang Chen   +4 more
doaj   +1 more source

Cold CO₂ Injection into Depleted Gas Reservoirs: Implications for Capacity, Injectivity and Containment

Energies
Depleted hydrocarbon reservoirs (DHRs), particularly depleted gas reservoirs (DGRs), are increasingly regarded as promising candidates for geologic carbon storage (GCS).
Hakan Alkan, Taofik H. Nassan, Anne Tamáskovics, Nematollah Zamani, Nicolai-Alexeji Kummer, Dirk Baganz, Carsten Freese, Mohd Amro   +7 more
doaj   +1 more source

Rheological Parameter Calibration of Online Drilling Fluid Property Monitoring System

Zuanjingye yu wanjingye
In drilling operations, accurate and fast measurement of drilling fluid rheology is essential for safe and efficient drilling. Pipe flow method can monitor the rheological properties of drilling fluids in a real time manner, wall slip phenomenon can ...
Liujun TU, Jianlong WANG, Xiaobing GUO, Ren WANG, Weijie ZHANG, Sheng’an LYU, Sheng LIU, Zexing YANG   +7 more
doaj   +1 more source