Results 31 to 40 of about 240 (159)

Experience in applying nuclear magnetic resonance logging while drilling for reservoir saturation assessment in Achimov deposits

Известия высших учебных заведений: Геология и разведка
Background. In the development of low-permeability reservoirs with low-salinity formation water (Achimov formation, Western Siberia), the reliable assessment of formation saturation is a critical challenge.
M. Yu. Kemaev, A. R. Rakhimov, I. V. Blinov   +2 more
doaj   +1 more source

Nuclear Magnetic Resonance Logging While Drilling (NMR-LWD)

Diffusion Fundamentals, 2010
NMR T2 distribution measurement is our chosen everyday method for NMR logging while drilling oil and gas wells. This method yields straightforward preparation and execution of the job as well as a normally easy interpretation of the measured data. For instance, gas and light oil discrimination against water is feasible by direct observation of the T2 ...
Blanz, Martin, Kruspe, Thomas, Thern, Holger Frank, Kurz, Gerhard Alfons   +3 more
openaire   +2 more sources

Design and implementation of data acquisition and processing software for NMR logging

Dianzi Jishu Yingyong
The logging-while-drilling nuclear magnetic resonance (LWD NMR) instrument can provide in-situ formation porosity and permeability measurements unaffected by mud invasion, but it poses severe challenges to adaptability under extreme conditions and system
Li Fan, Shi Guanghui, Zhu Wanli, Cheng Zhiyong, Liu Juzhao   +4 more
doaj   +1 more source

An EM LWD Tool for Deep Reading Looking-Ahead

IEEE Access, 2023
An electromagnetic (EM) logging while drilling (LWD) tool is proposed for deep reading detection ahead of the drill bit. The EM LWD tool consists of one coil transmitter sub and two separated coil receiver subs.
Pengfei Liang, Qingyun Di, Wenxuan Chen, Wenxiu Zhang, Ranming Liu, Xinghan Li   +5 more
doaj   +1 more source

Stratigraphic lithology identification based on no-dig Logging While Drilling system and random forest

地质科技通报, 2021
Through the self-developed and designed no-dig Logging While Drilling(LWD) system, it can collect the parameters of no-dig drilling, identify the real-time formation lithology of no-dig drilling, and provide safety information guarantee for no-dig ...
Han Xu, Kongxuan Yao, Danyi Cheng, Qiangyin Song, Zhiming Ma, Xuming Zhu, Xiaoming Wu, Guanhui Zhao, Xiaochun Cai   +8 more
doaj   +1 more source

Atypical Tetracyclines Promote Longevity and Ferroptotic Neuroprotection via Translation Attenuation

Aging Cell, Volume 25, Issue 6, June 2026.
Tetracyclines extend lifespan and protect neurons from ferroptosis by attenuating protein synthesis across multiple eukaryotic models through ISR‐dependent or ISR‐independent mechanisms, enabling classification based on their mode of action. ABSTRACT Reducing protein synthesis extends lifespan across taxa, but pharmacological strategies to safely ...
Khalyd J. Clay, Manuel Sanchez‐Alavez, Ian Newman, Na Na, Ana P. Verduzco Espinoza, Alan To, Shannon Saad, Hollis T. Cline, Michael Petrascheck   +8 more
wiley   +1 more source

Real-Time Intelligent Recognition and Precise Drilling in Strongly Heterogeneous Formations Based on Multi-Parameter Logging While Drilling and Drilling Engineering

Applied Sciences
Facing engineering challenges of real-time and high-precision recognition of strongly heterogeneous formations during directional drilling, it is crucial to address the issues of sparse lithology geological labels and multi-source lithology ...
Aosai Zhao, Yang Yu, Bin Wang, Yewen Liu, Jingyue Liu, Xubiao Fu, Wenhao Zheng, Fei Tian   +7 more
doaj   +1 more source

IODP Expedition 338: NanTroSEIZE Stage 3: NanTroSEIZE plate boundary deep riser 2 [PDF]

Scientific Drilling, 2014
The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) is designed to investigate fault mechanics and seismogenesis along a subduction megathrust, with objectives that include characterizing fault slip, strain accumulation, fault and wall rock ...
G. F. Moore, K. Kanagawa, M. Strasser, B. Dugan, L. Maeda, S. Toczko, the IODP Expedition 338 Scientific Party   +6 more
doaj   +1 more source

Microclimf: Fast modelling of microclimate across real landscapes in R

Methods in Ecology and Evolution, Volume 17, Issue 4, Page 1112-1123, April 2026.
Abstract Many ecological studies require climate data, but readily available datasets are poor surrogates for the conditions that organisms experience in nature. Understanding the climatic conditions experienced by organisms requires modelling microclimate rather than relying on coarse, station‐based climate data.
Ilya M. D. Maclean
wiley   +1 more source

Brown Trout Abundance in Boreal Streams With Large Wood

Ecology of Freshwater Fish, Volume 35, Issue 2, April 2026.
ABSTRACT Large wood has been found to be a crucial component in riverine ecosystems. However, due to the heavy channelization of rivers and intensive forestry practices over the past few decades, the amount of large wood in these ecosystems has decreased worldwide. River restoration aims to mitigate the effects of channelization and restore the channel
Alisa Koski, Sara Taskinen, Reetta Väätäinen, Jukka Tapani Syrjänen   +3 more
wiley   +1 more source