Factors and detection capability of look-ahead logging while …
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 …
Real-time forward modeling and inversion of logging-while …
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 …
Real-time estimation of geomechanical characteristics using …
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 …
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 …
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 …
A fast forward algorithm of azimuthal gamma imaging logging …
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 …
Numerical study of using dual sources constructed via …
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…
Resistivity correction for drilling fluid invasion using LWD and wire ...
Aug 1, 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 w…
Experimental-mechanistic analysis of pavement base deflections …
Apr 1, 2023 · An extensive experimental-mechanistic study was conducted to reveal the relationship between the light weight deflectometer (LWD) measured deflections…