A logging while drilling (LWD) and measuring while drilling (MWD) method and device are disclosed for reducing the sensitivity of NMR measurements to tool motions. The invention is based on NMR relaxation measurements determining longitudinal relaxation times T1 instead of the standard T2 measurements,...http://www.google.es/patents/US6242913?utm_source=gb-gplus-sharePatente US6242913 - Method for formation evaluation while drilling
