Jeffery Lynn Bailey

US Patent:

20120130693, May 24, 2012

Filed:

Aug 6, 2010

Appl. No.:

13/386859

Inventors:

Mehmet Deniz Ertas - Bethlehem PA, US
Jeffery R. Bailey - Houston TX, US
Damian N. Burch - Missouri City TX, US
Lei Wang - Sugar Land TX, US
Paul E. Pastusek - The Woodlands TX, US
Shankar Sundararaman - Houston TX, US

International Classification:

G06F 17/10

US Classification:

703 2

Abstract:

Method to estimate severity of downhole vibration for a drill tool assembly, including: identifying a dataset comprising selected drill tool assembly parameters; selecting a reference level of downhole vibration amplitude for the drill tool assembly; identifying a surface drilling parameter and calculating a reference surface vibration attribute for the selected reference level of downhole vibration amplitude; determining a surface parameter vibration attribute derived from at least one surface measurement or observation obtained in a drilling operation, the determined surface parameter vibration attribute corresponding to the identified surface drilling parameter; and estimating a downhole vibration severity indicator by evaluating the determined surface parameter vibration attribute with respect to the identified reference surface vibration attribute.