Technique for damping oscillations in a drill string

Details Technique for damping oscillations in a drill string Technique for damping oscillations in a drill string

1979-04-12

1981-03-10

Pate, III, William F.

Boring or penetrating the earth

Processes

Boring with specific fluid

175321, 267135, 267162, E21B 1700

Patent

active

042548373

ABSTRACT:
There is disclosed a shock sub for incorporation in the lower part of a drill string for damping oscillations of the bit and drill string during drilling. The shock sub incorporates a spring assembly including a multiplicity of substantially annular ring springs that exhibit a spring rate of less than about 25,000 pounds per inch of deflection. This is a continuation of application Ser. No. 849,718, filed Nov. 8, 1977 now abandoned.

REFERENCES:
patent: 3301009 (1967-01-01), Coulter, Jr.
patent: 3383126 (1968-05-01), Salvatori
patent: 3853188 (1974-12-01), Vasiliev
patent: 3963228 (1976-06-01), Karle

Affiliated with

Also associated with

Rating

Technique for damping oscillations in a drill string does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Technique for damping oscillations in a drill string, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Technique for damping oscillations in a drill string will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1290261