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Elimination of LWD (Logging-While-Drilling) Tool Modes Using Seismoelectric Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2006)
Borehole acoustic logging-while-drilling (LWD) for formation evaluation has become an indispensable part of hydrocarbon reservoir assessment (Tang et al., 2002; Cittá et al., 2004; Esmersoy et al., 2005). However, the ...
Higher Order Modes in Acoustic Logging While Drilling
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
In multipole acoustic logging while drilling (LWD), the fundamental modes dominate recorded waveforms. Higher order modes may also appear and complicate the processing of LWD data. In dipole LWD measurements, the dipole ...
A comparison of LWD and wireline dipole sonic data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)
Data measured by both wireline and LWD tools in the same borehole are compared. Discrepancies in shear velocities as calculated from the data are on average around 5% and discrepancies between compressional velocities are ...
An Experimental Study Of Seismoelectric Signals In Logging While Drilling
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
Acoustic logging while drilling (LWD) may be complicated because of contamination by waves propagating along the drill collar (the tool waves). In this paper we propose a new method for separating tool waves from the true ...