Factors and detection capability of look-ahead logging while drilling ...
Feb 1, 2025 · Electromagnetic technology used in logging while drilling (LWD) provides the resistivity distribution around a borehole within a range of several tens…
Logging While Drilling - an overview | ScienceDirect Topics
Logging while drilling (LWD) refers to systems and techniques for gathering down-hole data during drilling without removing the drill pipe from the well. LWD tools, which are instrumented drill collars, …
Real-time estimation of geomechanical characteristics using drilling ...
Jan 1, 2025 · A common issue with LWD tools is their offset from the drill bit, leading to depth discrepancies that compromise the real-time aspect of Vs predictions. Our model synchronizes …
Real-time forward modeling and inversion of logging-while-drilling ...
Feb 1, 2021 · By introducing priori information of offset/pilot wells and using the classic responses of LWD EM, the interac- tive inversion of LWD EM logging in horizontal wells is capable of providing …
Thin layer identification using a theoretical X-ray logging while ...
Jun 1, 2025 · 5. Conclusions Based on an actual LWD density tool, this work replaces the traditional gamma source with a controllable X-ray source and optimizes the source spacing of the short- and …
Importance of drilling-related processes on the origin of borehole ...
Jun 1, 2023 · The LWD tools are installed within drill collars at the lowermost part of the drill string and allow the real-time quantification of perturbations (e.g. pressure) while drilling as well as their impact …
Effects of formation structure on directional electromagnetic logging ...
Apr 1, 2022 · The directional EM LWD tools are of great importance in geosteering and reservoir navigation by analyzing geosignals and estimating formation resistivity. An efficient 2.5D FDM …
The use of light weight deflectometer for in situ evaluation of sand ...
Dec 1, 2014 · The light weight deflectometer (LWD) is a hand portable falling weight device that first appeared in 1981 at Magdeburg, Germany and developed as in situ testing device by the Federal …
A fast forward algorithm of azimuthal gamma imaging logging while ...
Apr 1, 2023 · An algorithm to achieve the fast simulation of azimuthal gamma logging response and imaging are introduced. Logging while drilling (LWD) technology can evaluate the formation interface …
Numerical study of using dual sources constructed via deconvolution …
Mar 1, 2025 · In the design of acoustic logging while drilling (LWD) instruments, acoustic isolation is crucial to prevent the loss of formation signals due to coll…