Inversion and uncertainty assessment of ultra-deep azimuthal resistivity logging-while-drilling measurements using particle swarm optimization
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2020.104059
Abstract: Abstract As the depth of detection of logging-while-drilling azimuthal resistivity tools increases, more details about formation structure fall into the detection zone. The complicated measurement responses make it impractical to directly interpret the formation from… read more here.
Keywords: resistivity; ultra deep; azimuthal resistivity; logging drilling ... See more keywords
Monopole collar wave characteristics for acoustic logging while drilling in fast formations in the frequency and spatial domains
Sign Up to like & getrecommendations! Published in 2019 at "Wave Motion"
DOI: 10.1016/j.wavemoti.2019.05.002
Abstract: Abstract Collar waves generated by the presence of the massive steel collar can interfere with or even cover formation signals, which has been a challenge for designing acoustic logging while drilling (ALWD) tools. In order… read more here.
Keywords: logging drilling; frequency; wave; collar wave ... See more keywords
Logging while drilling electromagnetic wave responses in inclined bedding formation
Sign Up to like & getrecommendations! Published in 2019 at "Petroleum Exploration and Development"
DOI: 10.1016/s1876-3804(19)60228-4
Abstract: Abstract For real-time inversion and fast reconstruction of formation true resistivity, the forward modeling of electromagnetic wave logging while drilling is usually based on the transversely isotropic formation model with vertical symmetry axis (VTI medium),… read more here.
Keywords: anisotropic; formation; logging drilling; electromagnetic wave ... See more keywords
High-Fidelity Real-Time Imaging With Electromagnetic Logging-While-Drilling Measurements
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Computational Imaging"
DOI: 10.1109/tci.2017.2670364
Abstract: A pixel-based inversion approach is introduced for interpretation of deep directional resistivity logging-while-drilling electromagnetic measurements. It can be used for real-time reservoir mapping while drilling to accurately place the well with respect to reservoir boundaries… read more here.
Keywords: resistivity; inversion; real time; logging drilling ... See more keywords
2-D Pixel-Based Inversion for Simultaneous Reconstruction of Resistivity and Dielectric Constant From Electromagnetic Logging-While-Drilling Measurements
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2021.3092599
Abstract: The dielectric effects are significant in certain circumstances in hydrocarbon exploration and production. Neglecting these effects can result in an inaccurate description of subsurface structure in terms of resistivity estimation and boundary location. However, almost… read more here.
Keywords: resistivity; inversion; pixel based; electromagnetic logging ... See more keywords
Estimation of Elastic Wave Velocity From Logging-While-Drilling Measurement in Unconsolidated Formation of Accretionary Wedge in Nankai Trough
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3219083
Abstract: The logging-while-drilling (LWD) acoustic technology has been developed to measure formation velocities/slownesses for rig time saving and real-time applications such as seismic-tie, pore pressure determination, and/or deep-sea drilling exploration. The formation compression-wave velocity is often… read more here.
Keywords: logging drilling; estimation elastic; formation; wave ... See more keywords
Efficient Denoising of Ultrasonic Logging While Drilling Images: Multinoise Diffusion Denoising and Distillation
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2025.3545272
Abstract: Ultrasonic logging while drilling (ULWD) often faces challenges due to the complex downhole environment, instrument usage, and inevitable data compression, which significantly degrade the quality of logging images and introduce various noises. These factors impair… read more here.
Keywords: ultrasonic logging; logging drilling; efficient denoising; diffusion ... See more keywords
Characteristics of Gas Hydrate Reservoir Determined from Logging-While-Drilling Resistivity Image Data in the Shenhu Area
Sign Up to like & getrecommendations! Published in 2020 at "Environmental geotechnics"
DOI: 10.1680/jenge.19.00016
Abstract: In 2016, Logging-While-Drilling (LWD) was conducted at 11 sites in the Shenhu area of the South China Sea in order to characterize the gas hydrate reservoir. We used LWD resistivity image data from... read more here.
Keywords: shenhu area; image data; hydrate reservoir; logging drilling ... See more keywords
Multistep-Ahead Prediction of Logging-While-Drilling Resistivity Curves Based on Seismic-Guided Seq2Seq-Long Short-Term Memory
Sign Up to like & getrecommendations! Published in 2024 at "SPE Journal"
DOI: 10.2118/221495-pa
Abstract: High-temperature and high-pressure reservoirs in complex geological conditions present primary targets and significant challenges in deepsea oil and gas exploration. Limited offshore drilling operations and lack of detailed geological data hinder accurate formation pressure prediction… read more here.
Keywords: resistivity; seq2seq; logging drilling; prediction ... See more keywords
Data Acquisition of Logging While Drilling at the Newly Discovered Gas Hydrate Reservoir in Hyuganada Sea, Japan
Sign Up to like & getrecommendations! Published in 2024 at "Energies"
DOI: 10.3390/en17153815
Abstract: From December 2021 to January 2022, MH21-S conducted an exploratory drilling campaign using logging-while-drilling tools to confirm the methane hydrate concentrated zone (MHCZ) for future offshore production tests. In a preliminary screening study using seismic… read more here.
Keywords: hydrate; data acquisition; logging drilling; hyuganada sea ... See more keywords