skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Gerotor and bearing system for whirling mass orbital vibrator

Abstract

A gerotor and bearing apparatus for a whirling mass orbital vibrator which generates vibration in a borehole. The apparatus includes a gerotor with an inner gear rotated by a shaft having one less lobe than an outer gear. A whirling mass is attached to the shaft. At least one bearing is attached to the shaft so that the bearing engages at least one sleeve. A mechanism is provided to rotate the inner gear, the mass and the bearing in a selected rotational direction in order to cause the mass, the inner gear, and the bearing to backwards whirl in an opposite rotational direction. The backwards whirling mass creates seismic vibrations.

Inventors:
; ; ; ; ;
Publication Date:
Research Org.:
Seismic Recovery, LLC, Tulsa, OK (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176125
Patent Number(s):
7,182,170
Application Number:
10/697,398
Assignee:
Seismic Recovery, LLC OSTI
DOE Contract Number:
FG26-00BC15191
Resource Type:
Patent
Resource Relation:
Patent File Date: 2003 Oct 30
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 42 ENGINEERING

Citation Formats

Brett, James Ford, Westermark, Robert Victor, Turner, Jr., Joey Earl, Lovin, Samuel Scott, Cole, Jack Howard, and Myers, Will. Gerotor and bearing system for whirling mass orbital vibrator. United States: N. p., 2007. Web.
Brett, James Ford, Westermark, Robert Victor, Turner, Jr., Joey Earl, Lovin, Samuel Scott, Cole, Jack Howard, & Myers, Will. Gerotor and bearing system for whirling mass orbital vibrator. United States.
Brett, James Ford, Westermark, Robert Victor, Turner, Jr., Joey Earl, Lovin, Samuel Scott, Cole, Jack Howard, and Myers, Will. Tue . "Gerotor and bearing system for whirling mass orbital vibrator". United States. doi:. https://www.osti.gov/servlets/purl/1176125.
@article{osti_1176125,
title = {Gerotor and bearing system for whirling mass orbital vibrator},
author = {Brett, James Ford and Westermark, Robert Victor and Turner, Jr., Joey Earl and Lovin, Samuel Scott and Cole, Jack Howard and Myers, Will},
abstractNote = {A gerotor and bearing apparatus for a whirling mass orbital vibrator which generates vibration in a borehole. The apparatus includes a gerotor with an inner gear rotated by a shaft having one less lobe than an outer gear. A whirling mass is attached to the shaft. At least one bearing is attached to the shaft so that the bearing engages at least one sleeve. A mechanism is provided to rotate the inner gear, the mass and the bearing in a selected rotational direction in order to cause the mass, the inner gear, and the bearing to backwards whirl in an opposite rotational direction. The backwards whirling mass creates seismic vibrations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2007},
month = {Tue Feb 27 00:00:00 EST 2007}
}

Patent:

Save / Share:
  • Methods of performing down hole operations in a wellbore. A vibrational source is positioned within a tubular member such that an annulus is formed between the vibrational source and an interior surface of the tubular member. A fluid medium, such as high bulk modulus drilling mud, is disposed within the annulus. The vibrational source forms a fluid coupling with the tubular member through the fluid medium to transfer vibrational energy to the tubular member. The vibrational energy may be used, for example, to free a stuck tubular, consolidate a cement slurry and/or detect voids within a cement slurry prior tomore » the curing thereof.« less
  • A carrier mounted seismic vibrator system that is primarily adapted for generation of high force, high frequency seismic energy into an earth medium. The apparatus includes first and second vibrators as supported by first and second lift systems disposed in tandem juxtaposition generally centrally in said vehicle, and the lift systems are designed to maintain equal hold-down force on the vibrator coupling baseplates without exceeding the weight of the carrier vehicle. The juxtaposed vibrators are then energized in synchronized relationship to propagate increased amounts of higher frequency seismic energy into an earth medium.
  • A method and apparatus for construction of a seismic vibrator control signal which comprises manually selecting sweep parameter data values for starting frequency, ending frequency, sweep time and taper time and inputting to an addressable storage medium. Thereafter, determining for each of a plurality of sample points throughout the sweep time, the sweep rate of change per sample point and the accumulated frequency value per sample point, and outputting in real time the digital sweep values for each successive sample point, and subsequently converting and smoothing said successive digital sweep values to an analog control signal of the selected frequency,more » relative amplitude and duration of sweep length.« less
  • Oscillating fluid flow in and out of a hydraulic cylinder is controlled by an electromechanical or electrohydraulic actuator which drives the hydraulic piston rod. Conduits connect the hydraulic cylinder to one or more seismic vibrators consisting of closed expandable chambers (14', 14'') supporting a reaction mass and attached to a base plate resting on the ground.
  • A downhole seismic source is described comprising: a housing; a reaction mass attached to and in the housing; means for clamping the housing at a predetermined fixed position within a wellbore; and means for hydraulically moving the reaction mass to generate at least one detectable seismic wave of predetermined frequencies attached to the housing such that forces are reacted from the reaction mass through the housing and the means for clamping into the wellbore.