Results 51 to 60 of about 13,384 (264)

Application of Cement Sheath Sealing Safety Coefficient Method in Heavy Oil Thermal Recovery Well

Shiyou jixie, 2021
In the process of steam injection in thermal recovery well of heavy oil, the requirements for the mechanical properties of cement sheath are high, and the accurate evaluation of cement sheath sealing property is the key to ensure the normal production of
Ji Hongfei, Xiao Yunfeng, Guo Xueli, Chen Xun, Zhang Chi, Jia Pengyang, Zhang Shuo   +6 more
doaj  

Fluorescence Properties and Mg2+ Selectivity of Aryl‐Alkynyl Derivatives of the o‐Aminophenoltriacetate (APTRA) Ligand

Chemistry – A European Journal, EarlyView.
It is a challenge to improve the selectivity of high‐denticity ligands for Mg2+ over Ca2+. We show that in aryl‐alkynyl derivatives of APTRA, electron‐withdrawing substituents lower the binding affinity for Ca2+ more than Mg2+, making the ligand more selective for Mg2+.
Laura L. Duncan, Christopher Hogg, J. A. Gareth Williams   +2 more
wiley   +1 more source

Potentials of waste seashells as additives in drilling muds and in oil well cements

Cleaner Engineering and Technology, 2020
Additives to drilling fluids and oil well cements play a significant role during wellbore drilling operations. These additives (such as carboxymethyl cellulose and starch) are often expensive and most times degrade at high temperature conditions ...
Okorie Ekwe Agwu, Julius Udoh Akpabio, Moses Gideon Akpabio   +2 more
doaj   +1 more source

AN IMPROVEMENT TO PHYSICAL PROPERTIES OF HEAVY-WEIGHT OIL WELL CEMENTS USING CARBON NANOTUBES [PDF]

Journal of Petroleum Science and Technology, 2014
This study experimentally investigates the effect of multi-walled carbon nanotubes (MWNT’s), as a reinforcing material, on the physical properties of heavy-weight oil well cements. A candidate well is selected and the properties of the cement slurry used
Ali Ghajari, Hamid Soltanian, Seyyed Alireza Mortazavi   +2 more
doaj   +1 more source

Utilization of Waste Materials Using the Müller–Kühne Process—A Life Cycle Inventory Study

Chemie Ingenieur Technik, EarlyView.
This study presents a Life Cycle Inventory of the Müller–Kühne process (MKP), which converts gypsum waste into sulfuric acid and cement clinker. The MKP outperforms conventional cement production regarding material yield, though its specific energy demand is higher. Consequently, potentials for circular gypsum waste utilization are discussed.
Leon Kassner, Manfred Renner, Peter Fröhlich, Martin Bertau, Philip Biessey   +4 more
wiley   +1 more source

Degradation of Abandonment Cement Plugs Under Prolonged Exposure to Completion Fluids: A Multi‐Technique Evaluation

International Journal of Ceramic Engineering & Science
This study investigates the durability of abandonment cement plugs applied in decommissioned oil wells in Brazil. The objective is to analyze the integrity of cement barriers over time to ensure the permanent sealing of wells and prevent leaks that could
Rafael A. Ventura, Ramón V. A. Ramalho, Willame G. S. Batista, Eduardo J. C. Lins, Júlio C. O. Freitas   +4 more
doaj   +1 more source

Recent progress of using carbon fiber in reinforcing cement-based composite and their enlightenment for oil-well cement future

Petroleum
The incorporation of fibers represents a crucial technique for improving the mechanical properties and other relevant characteristics of cement-based composites (CBC), including concrete, cement mortar, and oil-well cement.
Zehua Chen, Wenjian Yue, Chengwen Wang
doaj   +1 more source

Oil Well Cement for high temperature-A review

IOP Conference Series: Materials Science and Engineering, 2019
Abstract Oil well cement (OWC) are widely used in oil industry both in exploration and in production of oil and gas. The purpose of OWC is to seal the annular space between metal casing and walls of a borehole. OWC has other application such as grouting and repair of offshore structure, and in cementing of other wells likes as water ...
Pankaj Munjal, Kong Kian Hau, Abhinav Prabhakar, Cheng Chuen Hon Arthur   +3 more
openaire   +1 more source

Landscape of Research on Accounting Scope 3 Emissions: A Review of Methodologies and Data

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Scope 3 emissions have been proposed as a critical metric for evaluating corporate carbon footprint, identifying emission sources, and developing mitigation solutions. Yet, widespread corporate reporting of Scope 3 emissions remains limited, highlighting a critical gap in both research and practice.
Zeyu Wang, Klaus Hubacek, Xin Sun, Franco Ruzzenenti   +3 more
wiley   +1 more source

Form and load transfer aspects of foundation systems: Case‐based implementation and adaptation for buildings

Deep Underground Science and Engineering, EarlyView.
Upon conceptualization of structural behavior, foundations in terms of their form are divided into linear (1D), planar (2D), and volumetric (3D). Regarding the load transfer mechanisms, linear foundation systems are considered vector‐acting, planar foundations are divided into section and surface‐acting, and volumetric ones are recognized as block ...
Abolfazl Eslami, Amirhossein Ebrahimipour, Meysam Imani, Reza Imam, Pinqiang Mo   +4 more
wiley   +1 more source