Results 1 to 10 of about 240 (159)
A New Logging-While-Drilling Method for Resistivity Measurement in Oil-Based Mud [PDF]
Sensors, 2020 Resistivity logging is an important technique for identifying and estimating reservoirs. Oil-based mud (OBM) can improve drilling efficiency and decrease operation risks, and has been widely used in the well logging field. However, the non-conductive OBM
Baoliang Wang +2 more
exaly +4 more sources
Petroleum Exploration and Development, 2018 Azimuthal electromagnetic logging while drilling (LWD), which is capable of providing accurate position information approaching bed boundary, has been widely applied in real-time geosteering.
Lei Wang, Weina Zhao, Yiren Fan
exaly +4 more sources
Machine Learning With Applications, 2022 The Marcellus Shale and Energy Environmental Laboratory (MSEEL) provides a comprehensive dataset and field tests that can be used to study the significance of preexisting natural fractures in different subsurface engineering problems such as the ...
Ebrahim Fathi, , Mohammad Faiq Adenan
exaly +4 more sources
Application of Logging While Drilling Tool in Formation Boundary Detection and Geo-steering [PDF]
Sensors, 2019 Logging while drilling (LWD) plays a crucial role in geo-steering, which can determine the formation boundary and resistivity in real time. In this study, an efficient inversion, which can accurately invert formation information in real time on the basis
Fanmin Kong, Gaoyang Zhu, Muzhi Gao
exaly +4 more sources
Design of a New Acoustic Logging While Drilling Tool [PDF]
Sensors, 2021 To obtain qualified logging while drilling (LWD) data, a new acoustic LWD tool was designed. Its overall design is introduced here, including the physical construction, electronic structure, and operation flowchart.
Kai Zhang +8 more
doaj +2 more sources
Theoretical and Numerical Study of Seismoelectric Logs for Logging While Drilling (LWD) [PDF]
ITM Web of Conferences, 2017 When the acoustic field propagates in the porous medium, the electromagnetic wave can be induced by the seismoelectric effects which can be used in the logging. This paper studies the seismoelectric wave field and deduces the formulations of the acoustic
Sun Xiang-Yang, Zhao Yong-Peng
doaj +2 more sources
Design of a Multi-Node Data Acquisition System for Logging-While-Drilling Acoustic Logging Instruments Based on FPGA [PDF]
SensorsThe logging-while-drilling (LWD) acoustic logging instrument is pivotal in unconventional oil and gas exploration, and in providing real-time assessments of subsurface formations. The acquisition system, a core component of the LWD acoustic logging suite,
Zhenyu Qin +4 more
doaj +2 more sources
Petroleum Exploration and Development, 2010 The effect of drilling fluid invasion on the resistivity of oil-bearing zones during the period from penetrating the zone to completion well logging was studied using intergraded logging while drilling (LWD) and wire-line log data.
Tian Zhongyuan +4 more
exaly +3 more sources
A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea. [PDF]
Biol Rev Camb Philos SocABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Dickson J +9 more
europepmc +2 more sources
CAAI Transactions on Intelligence TechnologyA formation inversion algorithm with real‐time performance and accuracy is crucial for natural gamma logging while drilling (LWD). However, traditional inversion algorithms are often limited by high computational resource consumption and insufficient ...
Juntao Liu +4 more
doaj +2 more sources