Method and system for predicting the appearance of a dysfunction

Details Method and system for predicting the appearance of a dysfunction Method and system for predicting the appearance of a dysfunction

1996-04-01

1998-02-24

Brock, Michael

Measuring and testing

Borehole or drilling

During drilling

175 40, E21B 4700, E21B 4400

Patent

active

057213763

ABSTRACT:
In a method and to a system suited for monitoring the behaviour of a drill bit (2), the damping associated with a natural mode of the torsional oscillations measured by at least one measuring device (4) placed in the drill string is determined. The appearance of a stick-slip type dysfunctioning is predicted when the damping value decreases significantly as a function of time, and drilling parameters are then varied in order to avoid the appearance of the dysfunctioning.

REFERENCES:
patent: Re28436 (1975-06-01), Vitter, Jr. et al.
patent: 3703096 (1972-11-01), Vitter, Jr. et al.
patent: 4250758 (1981-02-01), Pitts, Jr. et al.
patent: 4715451 (1987-12-01), Bseisu et al.
patent: 5321981 (1994-06-01), Macpherson
patent: 5358059 (1994-10-01), Ho
patent: 5448911 (1995-09-01), Mason
patent: 5550788 (1996-08-01), Pavone et al.
Keith Rappold, "Drillstring vibration measurements detect bit stick-slip", Oil& Gas Journal, 91:9, pp. 66-70, Mar. 1993.

Affiliated with

Also associated with

Rating

Method and system for predicting the appearance of a dysfunction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for predicting the appearance of a dysfunction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for predicting the appearance of a dysfunction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1876257