Downhole apparatus for absorbing vibratory energy to generate el

Details Downhole apparatus for absorbing vibratory energy to generate el Downhole apparatus for absorbing vibratory energy to generate el

1982-12-27

1985-05-21

Beha, Jr., William H.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

175 50, 310 87, 464 20, G01V 140, E21B 1707

Patent

active

045188882

ABSTRACT:
In a drilling operation fatique producing vibrational motion is produced in the drill string in the form of longitudinal and torsional load variations at the drill bit and throughout the bottom hole assembly. These load variations occur at least partially as a result of the irregularly shaped hole bottom which develops beneath the bit and which in turn cause the bit to rise and fall with rotation, and the bit loading to vary. In addition, the rotating drill string causes gyrations in the drill string which are transmitted to the bottom end of the drill string and drill bit in the form of load and torque variations. These variations in loading appear as longitudinal and torsional vibrations in the drill string. A dampening and shock absorbing mechanism is at least partially comprised of piezoelectric elements which are responsive to the vibrations of the drill string to produce electrical energy which is used to operate downhole electrical circuits.

REFERENCES:
patent: 3090031 (1963-05-01), Lord
patent: 3506076 (1970-04-01), Angona
patent: 3559027 (1971-01-01), Arsem
patent: 3930220 (1975-12-01), Shawhan
patent: 3970877 (1976-07-01), Russel et al.
patent: 4011474 (1977-03-01), O'Neill
patent: 4110630 (1978-08-01), Hendel
patent: 4246765 (1981-01-01), Zabcik
patent: 4283780 (1981-08-01), Nardi

Affiliated with

Also associated with

Rating

Downhole apparatus for absorbing vibratory energy to generate el does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downhole apparatus for absorbing vibratory energy to generate el, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole apparatus for absorbing vibratory energy to generate el will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1540512