Results 121 to 130 of about 5,119,526 (356)

New Drilling Technology for Hole Cleaning and Efficient Drilling

, 2020
Well integrity is an important safety aspect of a well. Lack of wellbore integrity can lead to challenges like wellbore collapse, stuck pipe, lost circulation and sloughing shales, which are all big problems for drillers. Loss of circulation and stuck pipe is a high cost problem and is affecting the drilling optimisation considerably.
openaire   +1 more source

Дослідження ефективності використання енергоресурсів під час буріння свердловин [PDF]

, 2013
Розглядаються важливі питання промислового дослідження енергетичних витрат процесу буріння свердловини і апробації науково-методичних основ проектування і вибору оптимальної енергоефективної продуктивності бурового насоса.
Чудик, І. І.
core  

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

An optimization technique based on mechanical specific energy concept to improve drilling efficiency: a case study

Записки Горного института
For years attempts have been made in the drilling industry to increase the drilling efficiency and decrease the associated costs. The drilling efficiency can be evaluated by comparing applied energy, i.e., mechanical specific energy, with rock strength ...
Sajjad Khoshro, Seyyed Shahab Tabatabaee Moradi   +1 more
doaj  

A review of the critical conditions required for effective hole cleaning while horizontal drilling

Petroleum
Horizontal drilling has become increasingly prevalent in the oil and gas industry due to its potential for enhanced reservoir recovery and reduced environmental impact.
Amir Shokry Youssef, Ahmed Abdulhamid Mahmoud, Salaheldin Elkatatny, Talal Al Shafloot   +3 more
doaj   +1 more source

Drilling operation efficiency

, 2014
The petroleum industry on the Norwegian Continental Shelf is in a time with well construction time and cost as an increased challenging factor. The operators desire to discontinue this trend and are currently cutting cost. Consequently, a contractor similar to COSL Drilling AS meets a demand for a more efficient operation.
openaire   +1 more source

An Ultrafast Self‐Gelling Versatile Hydrogel for Rapid Infected Burn Wound Repair in Military Medicine

Advanced Functional Materials, EarlyView.
A self‐gelling PG@PAC (POD/Gel‐CDH@PA/CHX) powder is developed for infected burn care in austere settings. Upon contact with wound exudate, it instantly forms an adhesive hydrogel, providing simultaneous hemostasis, broad‐spectrum antibacterial activity, reactive oxygen species scavenging, and immunomodulation. In a murine model of S.
Liping Zhang, Zhangrui Wu, Xiansheng Zhao, Geng Wang, Quyang Yang, Minxia zhang, Xiaowei Wang, Xiujun Cheng, Changyue Wu, Dan Wu, Yutian Yang, Canbin Dong, Tao Zhang, Weiqiang Tan, Ningwen Zhu   +14 more
wiley   +1 more source

Analysis of Drilling Fluid Rheology & Pressure Drop Modelling to Improve Drilling Efficiency

, 2018
The major drilling problems such as fluid loss, wellbore strengthening, well control, carrying capacity, torque & drag, stuck pipe, etc. can result from the improper matching of drilling fluid properties. These problems occur due to variations in pressure, and temperature which has a great impact on the rheological properties.
openaire   +2 more sources

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

Advanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker, Yu Wang, Yongwen Sun, Caeli Benyacko, Saeed S.I. Almishal, Tao Zhou, Zhiyu Zhang, Jadupati Nag, Himirkanti Sarkar, Jeffrey Shallenberger, Hemant Yennawar, Yang Yang, Jon‐Paul Maria, Zhiqiang Mao, Venkatraman Gopalan   +14 more
wiley   +1 more source

Deterministic hBN Bubbles as a Versatile Platform for Studies on Single‐Photon Emitters

Advanced Functional Materials, EarlyView.
Single‐photon emitters (SPEs) in hBN are promising for quantum technologies; however, in exfoliated samples their activation is required, limiting reproducibility of previous studies. This work introduces a large‐area MOVPE‐grown hBN platform that hosts SPEs without prior activation.
Piotr Tatarczak, Tomasz Fąs, Jan Pawłowski, Aleksandra Krystyna Dąbrowska, Jan Suffczyński, Mateusz Tokarczyk, Piotr Wróbel, Andrzej Wysmołek, Johannes Binder   +8 more
wiley   +1 more source