Results 61 to 70 of about 89,974 (258)

Challenges of formation damage control technology for ultra-deep tight gas reservoirs: A case study from Tarim Basin

open access: yesNext Sustainability
Formation damage mechanisms and the corresponding control technology for the tight gas reservoirs have been reported, whereas few studies have discussed ultra-deep fractured tight gas reservoirs. Ultra-deep fractured tight gas reservoirs were susceptible
Dujie Zhang
doaj   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

open access: yesAdvanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang   +7 more
wiley   +1 more source

Lost circulation intensity characterization in drilling operations: Leveraging machine learning and well log data

open access: yesHeliyon
Lost circulation is one of the important challenges in drilling operations and bears financial losses and operational risks. The prime causes of lost circulation are related to several geological parameters, especially in problem-prone formations. Herein,
Ahmad Azadivash
doaj   +1 more source

Smart lost circulation materials for productive zones

open access: yesJournal of Petroleum Exploration and Production Technology, 2018
Lost circulation has been a serious problem while drilling that may lead to heavy financial costs in the form of lost rig time and lost mud fluid. In severe cases, it can lead to well blowout with serious environmental hazards and safety consequences ...
Ahmed Mansour   +4 more
doaj   +1 more source

A Review on Catalytic Nanostructured Electrodes for Wearable and Implantable Abiotic Glucose Fuel Cells

open access: yesAdvanced Science, EarlyView.
This review identifies current and future directions in abiotic nanostructured catalysts to develop reliable and sustainable glucose fuel cells to power the next generation of bioelectronic devices. ABSTRACT The global rise in incidence of chronic diseases has led to the demand for innovative solutions that help patients manage their conditions with ...
Asghar Niyazi   +3 more
wiley   +1 more source

Methods for lost circulation control and water shutoff in oil and gas wells

open access: yesKazakhstan journal for oil & gas industry
Background: Improving technologies for lost circulation control and water shutoff remains a key priority in drilling oil and gas wells. In West Kazakhstan, which holds significant hydrocarbon reserves, various methods are applied, including cement slurries, lost circulation materials (LCM) of different particle sizes, and high-viscosity or polymer ...
Sayat Zh. Raikulov   +2 more
openaire   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

open access: yesAdvanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale   +6 more
wiley   +1 more source

Design of Lost Circulation Control Test Device Simulating Annulus Flow

open access: yesShiyou jixie, 2019
The three dynamic lost circulation simulation methods of narrow groove flow of the slit plate, indoor-build wellbore annulus and agitator stirring were analyzed and compared. It is found that these three simulation methods are not practical in the indoor
Jiang Zhenxin   +3 more
doaj  

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

open access: yesAdvanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li   +7 more
wiley   +1 more source

Key Technology for Drilling Speed and Efficiency Improvement on Chenghai 2-2 Artificial Island of Dagang Oilfield

open access: yesShiyou jixie, 2019
To address the problems of difficult trajectory control, high torque and drag and serious regional lost circulation on Bohai 2-2 artificial island of Dagang Oilfield, based on the analysis of drilling difficulties, targeting the well trajectory control ...
Wang Jianlong   +6 more
doaj  

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