Results 61 to 70 of about 240 (159)

Diatom and Radiolarian Biostratigraphy in the Vicinity of the 2011 Tohoku Earthquake Source Fault in IODP Hole 343‐C0019E of JFAST

Island Arc, Volume 34, Issue 1, January/December 2025.
ABSTRACT The frontal prism in the Japan Trench on the 2011 Tohoku‐Oki earthquake (Mw 9.0, March 11, 2011) rupture zone had been drilled during the Integrated Ocean Drilling Program (IODP) Expeditions 343 and 343 T. We investigated fossil diatoms and radiolarians to determine age constraints on the cored sediments and reveal the behavior of sediment ...
Masao Iwai, Isao Motoyama, Weiren Lin, Reishi Takashima, Yasuhiro Yamada, Nobuhisa Eguchi   +5 more
wiley   +1 more source

Controlling Effect of Particle Size on Gas Hydrate Enrichment in Fine‐Grained Sediments

Earth and Space Science, Volume 11, Issue 6, June 2024.
Abstract The particle size of sediments below the seabed is a crucial factor affecting the formation and enrichment of gas hydrates. Apart from the formation and enrichment law of gas hydrate in coarse‐grained sediments (dominated by a sandy‐sized fraction), in the fine‐grained sediments (<62.5 μm) which accounts for more than 90% of offshore gas ...
Chenyang Bai, Pibo Su, Xiaolei Xu, Yu Zhang, Shujun Han, Jinqiang Liang   +5 more
wiley   +1 more source

Prediction of reservoir depletion degree and production GOR using logging-while-drilling data

Petroleum Exploration and Development, 2009
Data of logging-while-drilling (LWD) log, formation pressure from MDT (modular formation dynamics tester) measurement, and production performance are used to study the relationship between depletion degree (formation pressure), initial production GOR ...
Li Fangming, Tian Zhongyuan, Jiang Aming, Wang Xiaoxia   +3 more
doaj   +1 more source

The Data Supplement Method of Azimuthal EM LWD Based on Deep Learning

IEEE Access
The data of azimuthal electromagnetic (EM) Logging-While-Drilling (LWD) tool is crucial for controlling and optimizing the trajectory of the wellbore, making it a key technology in geosteering.
Liangchen Zhang, Haojie Qin, Xiangyu Yang, Yanbo Zong   +3 more
doaj   +1 more source

Optimization and Analysis of Sensitive Areas for Look-Ahead Electromagnetic Logging-While-Drilling Based on Geometric Factors

Energies
Look-ahead electromagnetic (EM) logging-while-drilling (LWD) plays an indispensable role in the prediction of deep and ultra-deep reservoirs. Traditional electromagnetic logging-while-drilling (EMLWD) and ultra-deep EMLWD technologies exhibit certain ...
Guoyu Li, Zhenguan Wu, Xiaoqiao Liao, Xizhou Yue, Xiang Zhang, Tianlin Liu, Yunxin Zeng   +6 more
doaj   +1 more source

The simulation and research of seismoelectric logs for Logging While Drilling(LWD) [PDF]

Proceedings of the 2017 2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2017), 2017
XiangYang Sun, Yongpeng Zhao
openaire   +1 more source

Application of rotary geosteering drilling in deep and thin reservoirs of Tarim Basin, NW China

Petroleum Exploration and Development, 2013
Geological features, such as deep and thin reservoirs and unstable structure margin, occur in an oilfield of the Tarim Basin. To deal with these problems while drilling, a rotary geosteering drilling technique was introduced.
Chengguang ZHANG, Qianli WU, Xiaoliang WANG, Ning LÜ   +3 more
doaj   +1 more source

Inversion of logging data in azimuthal electromagnetic wave resistivity while drilling based on self-explaining deep learning

Journal of Petroleum Exploration and Production Technology
Logging-while-drilling (LWD) azimuthal electromagnetic resistivity tools can obtain the amplitude ratios and phase differences during drilling, but these signals cannot directly quantify the formation resistivity or boundary distances which are essential
Yufeng Han
doaj   +1 more source

Апаратурно-методичний комплекс  для визначення параметрів нафтогазових колекторів у процесі буріння горизонтальних свердловин

Вісник Київського національного університету імені Тараса Шевченка. Серія Геологія, 2019
Розглянуто основні положення нового для України напрямку геофізичних досліджень у свердловинах (ГДС) – каротаж у процесі буріння (logging while drilling – LWD).
М. Бондаренко, В. Кулик, З. Євстахевич, С. Данилів, В. Зіненко, М. Лось   +5 more
doaj   +1 more source

Simulating on Neutron Porosity Response Based on D-T Source in Logging While Drilling

Journal of Isotopes
Neutron porosity logging is indispensable for hydrocarbon reserve estimation，reservoir evaluation，and development planning. The use of controllable D-T neutron sources in logging-while-drilling (LWD) offers a safer，more stable，and environmentally ...
Xili XI, Qian CHEN, Feng ZHANG, Luyu ZHONG   +3 more
doaj   +1 more source