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/US20010040452?utm_source=gb-gplus-sharePatente US20010040452 - System and methods for formation evaluation while drilling
System and methods for formation evaluation while drilling
Número de solicitud: 09/874,029 Número de publicación: US 2001/0040452 A1 Fecha de presentación: 5 Jun 2001 Patente emitida: US6531868 ( Fecha de emisión 11 Mar 2003)
