Results 131 to 140 of about 464 (176)

Simulation and Optimization of Transmitting Transducers for Well Logging. [PDF]

Sensors (Basel)
Gao X, Zhou J, Du X.
europepmc   +1 more source

Porosity prediction from well logging data via a hybrid MABC-LSSVM model. [PDF]

PLoS One
Su W, Gao J, Wu W, Zhang H.
europepmc   +1 more source

Integration of the Biot-Gassmann Fluid Substitution Method and Machine Learning-Based Velocity-Stress Relationship for Estimating In Situ Stresses. [PDF]

ACS Omega
Mustafa A, Lu G, Bunger AP.
europepmc   +1 more source

Research on acoustic logging while drilling transmitting technologies

Journal of Geophysics and Engineering, 2022
Abstract Acoustic logging while drilling (LWD) technology plays an important role in oil and gas exploration and development. Compared to traditional wireline logging, LWD must address more additional crucial problems, such as great noise confusions.
Baohai Tan, Shengqing Li, Su Yuanda
exaly   +2 more sources

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Novel transmitter transducer for acoustic logging while drilling

Applied Acoustics, 2022
Xin Fu, Yang Gou
exaly   +2 more sources

Acoustic fields for monopole logging while drilling with an eccentric collar

Geophysics, 2021
ABSTRACT The acoustic problem of an eccentric drill collar in a fluid-filled borehole has been of interest in the field of acoustic logging while drilling (ALWD) in recent years. To reduce the effects of tool eccentricity on ALWD measurements, studies on acoustic responses under such conditions are essential.
Yunjia Ji, Xiao He, Hao Chen
exaly   +2 more sources

Vibration and horizontal directivity analysis of transmitting transducer for acoustic logging while drilling [PDF]

Journal of Geophysics and Engineering, 2021
Abstract Radially polarized open-cylindrical piezoelectric transducers are widely used in the field of acoustic logging while drilling (LWD). Unlike the wireline logging transducer, the structure of the acoustic LWD transducer is an open structure; in this case, its radial vibration is accompanied by apparent circumferential vibration ...
Yang Gou, Xin Fu
exaly   +2 more sources

Reflection signals and wellbore scattering waves in acoustic logging while drilling [PDF]

Journal of Geophysics and Engineering, 2020
Abstract In sonic logging while drilling (LWD), it is difficult to extract reflection signals for the goal of geo-steering as the wave fields are so complicated. It is important to analyse the reflection and scattering effects based on the synthetic acoustic signals of the real LWD models, while considering the medium discontinuity at ...
Yue Pan, Xiao He, Xiuming Wang
exaly   +2 more sources