Results 11 to 20 of about 1,682 (251)

Theoretical and Numerical Study of Seismoelectric Logs for Logging While Drilling (LWD) [PDF]

open access: yesITM 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

Simulation of Electromagnetic Wave Resistivity Logging While Drilling Based on the Physical-Informed Neural Network

open access: yesCejing jishu, 2023
In order to simulate the response of electromagnetic wave resistivity logging while drilling efficiently in complex media and accelerate the inversion of logging data, the physical-informed neural network (PINN) is used to simulate the response of ...
LIU Yang, WANG Jian, XU Delong
doaj   +1 more source

Control method and system design for power saving and power consumption reduction of gamma LWD probe tube

open access: yesMeikuang Anquan, 2022
In view of the contradiction between the power supply time of the logging probe in hole of the gamma logging while drilling system in coal mine and the construction period of drilling operation, the energy-saving and power-saving control method and ...
TIAN Xiaochao, JIANG Bici
doaj   +1 more source

Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool

open access: yesCejing jishu, 2023
In order to avoid the construction risk caused by chemical sources in the radioactive logging of highly deviated wells, long horizontal wells and complex operating conditions, to obtain the formation data safely and efficiently, the controllable-source ...
CHEN Hui   +5 more
doaj   +1 more source

New geophysical memory-logging system for highly unstable and inclined scientific exploration drilling [PDF]

open access: yesScientific Drilling, 2021
We established a cable-free memory-logging system for drill-string-deployed geophysical borehole measurements. For more than 20 years, various so-called “logging while tripping” (LWT) techniques have been available in the logging service industry ...
J. Kück   +4 more
doaj   +1 more source

Detecting hydrodynamic barriers of reservoirs based on drilling of horizontal wells to refine geological models

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2023
During the geological modeling process, it can be problematic to substantiate predicted faults or barriers that are estimated from seismic data and require additional research.
Alena V. Ilmendeeva, Nikita V. Nosov
doaj   +1 more source

Application of Gamma Logging While Drilling System in Drilling Along Coal Seam

open access: yesMeikuang Anquan, 2020
This paper introduces the application of gamma logging system while drilling based on wireless electromagnetic wave transmission in controlled drilling of gas pre-drainage borehole along coal seam, and the analytic process includes the composition ...
TIAN Xiaochao, JIANG Bici, JI Fanglin, CHEN Long
doaj   +1 more source

An Intelligent Inversion Method for Azimuth Electromagnetic Logging While Drilling Measurements

open access: yesIEEE Access, 2023
Azimuth electromagnetic (EM) Logging While Drilling (LWD) tools play an important role in geological steering and reservoir evaluation. Its measuring response is amplitude ratio (ATT) and phase difference (PS), which can’t directly reflect ...
Zhengming Kang   +4 more
doaj   +1 more source

Improving reliability of logging process: A Bohai Bay case study

open access: yesEngineering Reports, 2022
Drilling and logging are important links in oil and gas development, and the accurate acquisition of operation data directly affects the development efficiency of oil and gas reserves.
Erbo Wang   +4 more
doaj   +1 more source

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