Results 31 to 40 of about 509 (156)

Study of the pitting corrosion at welding joints of Inconel 625 alloy under high temperature and high H2S/CO2 partial pressure

International Journal of Electrochemical Science, 2017
The corrosion resistances of the Incoloy 825 alloy base metal and the Inconel 625 alloy weld under high temperature high pressure (HTHP) H2S/CO2 conditions were investigated.
Qiang Guo, Yuan Li, Jiong Qian, Haobo Yu, Changfeng Chen   +4 more
doaj   +1 more source

Performance analysis of multistage high‐temperature heat pump cycle

Energy Science & Engineering, 2023
High‐temperature heat pumps (HTHPs) that can supply heat at temperatures at and above 200°C have the potential to increase energy efficiency and decrease carbon dioxide (CO2) emissions in industrial processes. In this study, three reversed Rankine cycles
Seon Tae Kim, Robert Hegner, Göksel Özuylasi, Panagiotis Stathopoulos, Eberhard Nicke   +4 more
doaj   +1 more source

Architectural Design and Affecting Factors of Jute‐Based Flame‐Retardant Textiles for Real‐World Applications

Nano Select, Volume 6, Issue 12, December 2025.
Jute‐based flame‐retardant textiles are eco‐friendly materials used in home textiles, firefighting gear, and insulation. Developed through coating, exhaustion, and chemical treatments, they offer safety, scalability, and versatility. Challenges include cost, durability, and environmental impact.
Md. Nazif Hasan Chowdhury, Arnob Dhar Pranta, Md. Reazuddin Repon, Tonmoy Saha, Joyjit Ghosh   +4 more
wiley   +1 more source

Application of a well testing simulation technique in productivity evaluation of well-X1 in high temperature and high pressure reservoir

Youqicang pingjia yu kaifa, 2019
The following problems stood out in the deliverability tests and analysis of gas wells with high temperature and high pressure（HTHP） in South China Sea. Firstly, it was unable to accurately calculate the variable mechanical skin factors, resulting in the
Lei Xiao, Li Shusong, Wang Wenjuan, Zhang Fengbo, He Zhihui, Ma Shuai   +5 more
doaj  

The Dynamic Response Characteristics of Ballooning Effect in Deep Fractured High Temperature High Pressure Formations in Deep Water Drilling

Zuanjingye yu wanjingye
Deep formations in deep water area are developed with fractures and fissures, fluctuations in wellbore pressure during drilling can easily induce ballooning effect which is made complex by the high temperature high pressure (HTHP) downhole environment ...
Yanhui WU, Honglin HUANG, Ming LUO, Wentuo LI, Chuanhua MA, Rui DAI, Jun LI   +6 more
doaj   +1 more source

Evaluation of the viability of nanoparticles in drilling fluids as additive for fluid loss and wellbore stability

Petroleum, 2023
Wellbore instability is an issue that, if left untreated, can cause wells to collapse, resulting in human, environmental, equipment, and revenue losses.
Albertus Retnanto, Rommel Yrac, Abdullah Shaat, Adhika Retnanto, Laith Abughaush, Maha Al Sulaiti, Najla Badar   +6 more
doaj   +1 more source

Ammonothermal Growth of Rhombohedral Boron Nitride

physica status solidi (b), Volume 262, Issue 12, December 2025.
Boron nitride crystals are grown using the ammonothermal technique in a temperature‐induced solubility gradient of BN dissolved in a solution of supercritical ammonia using sodium as the mineralizer. The grown BN crystals harvest off the autoclave walls, and cubic BN seeds are characterized as hexagonal and rhombohedral phases of BN. Boron nitride (BN)
Jacob Dooley, Nathan Stoddard, Kai Landskron, Siddha Pimputkar   +3 more
wiley   +1 more source

Mechanistic Investigation of Salt Precipitation Induced by Supercritical CO2 in Saline Aquifers

Water Resources Research, Volume 61, Issue 10, October 2025.
Abstract Salt precipitation near injection wells critically influences both the efficiency and integrity of CO2 geological storage in saline aquifers, especially under high‐salinity conditions. To clarify the dominant mechanisms of supercritical CO2 (ScCO2)‐induced salt crystallization and inform mitigation strategies, we conducted static high ...
Danqun Wang, Jingtao Lai, Yan Zhang, Weimin Chen, Zhiping Li, Jianping Guo   +5 more
wiley   +1 more source

Study HTHP Sintered WC/Co Hardmetal [PDF]

Materials Research, 2016
WC/Co is widely used as cutting tools, because has a unique combination of high strength, hardness, toughness, and moderate stiffness, especially with fine grained WC and finely distributed cobalt.
Meysam Mashhadikarimi, Uilame Umbelino Gomes, Michel Picanço Oliveira, Renan Da Silva Guimarães, Marcello Filgueira   +4 more
doaj   +1 more source

Quenchable Amorphous Diamond: A Novel High‐Pressure Route to Tetrahedral Amorphous Carbon

Advanced Theory and Simulations, Volume 8, Issue 9, September 2025.
This study predicts the high‐pressure transformation of amorphous graphite into an sp3‐rich amorphous diamond phase using ab initio molecular dynamics. A first‐order transition is expected to occur ≈33 GPa in experiments, offering a novel synthesis route for sp3‐bonded amorphous carbon.
Murat Durandurdu
wiley   +1 more source