Results 41 to 50 of about 240 (159)

Elimination of LWD (Logging While Drilling) Tool Modes Using Seismoelectric Data [PDF]

Communications in Computational Physics, 2010
Borehole acoustic logging-while-drilling (LWD) for formation evaluation has become an indispensable part of hydrocarbon reservoir assessment [F. Cittá, C. Russell, R. Deady and D. Hinz, The Leading Edge, 23 (2004), pp. 566-573]. However, the detection of acoustic formation arrivals over tool mode contamination has been a challenging problem in acoustic
openaire   +1 more source

Resistivity Change Mechanism in the Carbon Dioxide Sequestration Process

Energy Science &Engineering, Volume 14, Issue 2, Page 752-763, February 2026.
This study explores the variation law, influencing factors, and mechanisms of resistivity in the interaction between CO₂ and saltwater. This study used a hollow PEEK conductor to simulate core pores. With excellent thermal stability, mechanical strength, and electrical insulation, its homogeneous, nonporous nature eliminates interference from rock ...
Xinke Jin, Lihong Shi, Changquan Wang, Shijing Xu, Weijie Fu, Yunfei Lei   +5 more
wiley   +1 more source

Logging While Drilling Resistivity and Wireline Resistivity Logging Data Comparison and Quality Control Methods

Cejing jishu
To enhance the reliability of reservoir evaluation in complex wells and to address the issues of inconsistent responses and cross-validation difficulties arising from differences in measurement principles and environmental conditions between logging ...
Yang Zhen, Qiao Ping, Li Yonghua, Lu Chao   +3 more
doaj   +1 more source

LightGEUnet: A Lightweight U‐Net for 3D Seismic Fault Detection

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Fault detection represents a crucial task in seismic interpretation, with significant implications for hydrocarbon exploration. Advancements in artificial intelligence have driven widespread adoption of machine learning techniques to tackle complex scientific and engineering problems.
Yuzhe Tang, Hongjun Wang, Liangjie Zhang, Yunpeng Shan   +3 more
wiley   +1 more source

Permeability of the Pāpaku Fault Within the Hikurangi Subduction Zone Determined From the Thermal Response to a Free Flowing Well Test

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract The paucity of in situ meso‐scale permeability measurements within subduction zones makes it difficult to fully characterize hydrologic processes and conditions that influence fault zone behavior. In the Hikurangi subduction zone, where large shallow slow slips are observed, there are outstanding questions about the hydrologic influence splay ...
Roberto D. Clairmont, Patrick M. Fulton
wiley   +1 more source

The research of LWD acoustic isolator based on SAW spatial separation [PDF]

MATEC Web of Conferences, 2019
Acoustic logging while drilling (LWD) can extract P-wave and S-wave information from the formation. However, the transmission of the collar wave propagated directly from the emitter to the receiver may interfere with the P-wave and S-wave and affect the ...
Yang Peinian, Chen Dehua, Xiuming Wang
doaj   +1 more source

Real-time forward modeling and inversion of logging-while-drilling electromagnetic measurements in horizontal wells

Petroleum Exploration and Development, 2021
Based on the pseudo-analytical equation of electromagnetic log for layered formation, an optimal boundary match method is proposed to adaptively truncate the encountered formation structures.
Lei WANG, Yingming LIU, Caizhi WANG, Yiren FAN, Zhenguan WU   +4 more
doaj   +1 more source

Dissociating Gas Hydrate Beneath the Hydrate Stability Zone

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Vast amounts of carbon are stored beneath the seafloor in the form of methane hydrate. Hydrate is stable at moderate pressure and low temperature at a depth extending several hundred meters beneath the seafloor to the base of gas hydrate stability (BGHS) often marked by bottom simulating reflections (BSRs) in seismic profiles.
I. A. Pecher, A. E. Cook, E. A. Solomon, X. Wang, S. Han, M. Paganoni, M. Luo, K. U. Heeschen, D. D. McNamara, M. Nole, L. LeVay, K. Petronotis, P. M. Barnes, L. M. Wallace, D. M. Saffer   +14 more
wiley   +1 more source

Logging Components Extraction Method and Anisotropy Recognition Based on 3D Holographic LWD Instrument [PDF]

Lithosphere
Addressing the challenges of extracting all electromagnetic logging components in a self-developed 3D holographic logging while drilling (LWD) tool using existing theoretical methods, this study focuses on the following core work: starting from a three ...
Shuyu Guo, Jie Wang, Xiangyu Xing, Jiaqi Xiao, Xiao Liu   +4 more
doaj   +1 more source

State of Stress Across Major Faults in the Nankai Subduction Zone Estimated From Wellbore Breakouts

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract Quantifying the orientation and magnitude of stress at tectonically active margins and along major fault systems is integral to understanding the mechanics of faulting and earthquakes. Here we use data collected as part of the IODP (Integrated Ocean Drilling Program) Nankai Trough Seismogenic Zone Experiment to constrain in situ stress ...
Kaitlin E. Schaible, Demian M. Saffer
wiley   +1 more source