Results 201 to 210 of about 1,682 (251)
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Novel transmitter transducer for acoustic logging while drilling
Applied Acoustics, 2022Xin Fu, Yang Gou
exaly +2 more sources
Multipole acoustic logging‐while‐drilling
SEG Technical Program Expanded Abstracts 2002, 2002The problem of multipole acoustic Logging-WhileDrilling (LWD) is analyzed. By formulating a multipole acoustic ring source at the rim of the drill collar, we model the characteristics of monopole, dipole, and quadrupole waves in the LWD environment.
X. M. Tang, T. Wang, D. Patterson
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Acoustic Logging-While-Drilling
2020Acoustic logging-while-drilling (ALWD) is an advanced technology developed to determine the formation properties in real-time while drilling. Its advantages include obtaining formation properties while conserving drill-rig time, true formation information without invasion, acquisition of information for drilling safety such as over-pressured formations,
Hua Wang +2 more
openaire +1 more source
Novel Scintillators for Logging while Drilling
Proceedings, 2016Summary The quality and characteristics of scintillating materials has improved in recent decades but mineral exploration gamma-logging tools have failed to capitalize upon these newer developments. Most tools still incorporate NaI crystals, which have been in use since the 1960s.
M. Carson, A. Kepic
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MULTIPOLE ACOUSTIC LOGGING-WHILE-DRILLING
ГЕОФИЗИКА, 2022В статье представлены итоговые результаты НИОКР по созданию мультипольного акустического прибора для каротажа в процессе бурения, дан обзор зарубежных прототипов, указан комплекс решенных научнотехнических проблем. Приведены достигнутые характеристики прибора, примеры обработки полевых скважин и анализа данных каротажа.
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Logging-While-Drilling (LWD) Results in Indonesia
Offshore Technology Conference, 1992ABSTRACT The engineering of well log sensors into drill collars enables the recording of Formation Resistivity, Gamma Ray, Neutron Porosity, Bulk Density and Photoelectric Factor (Pe). Data are recorded Downhole and selected data are transmitted to the surface in real time by way of mud pulse telemetry.
Phil Nordy, K. Henry
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Analysis of Signal Transmission for Use of Logging While Drilling
IEEE Geoscience and Remote Sensing Letters, 2013Effective downhole-to-surface transmission of the logging signals is one of the critical techniques for logging while drilling (LWD). This letter aims to evaluate an advanced scheme of signal transmission for the LWD proposed by Novatek, with an emphasis on the electromagnetic (EM) coupling between two adjacent pipes and the impedance matching between ...
Shi-Wei Qu 0001 +4 more
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Logging-While-Drilling in Unconventional Shales
SPE Annual Technical Conference and Exhibition, 2010Abstract Unconventional shale environments have traditionally been evaluated with wireline logging tools. Recently, it has become more common to evaluate these wells with logging-while-drilling tools because of challenges such as wellbore stability problems that make it risky to leave the hole uncased long enough to run wireline.
Jennifer Market +7 more
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Remote Directional Drilling and Logging While Drilling Operations in the Arctic
IADC/SPE Drilling Conference and Exhibition, 2016Abstract Few locations present as many challenges as drilling in Arctic. It is one of the most hostile environments in the world. It contains some of the most remote locations, the toughest logistics challenges and the largest gaps in infrastructure on the planet.
Crispin Chatar +3 more
openaire +1 more source