Ultrasonic cleanout tool and method of use thereof
First Claim
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1. Apparatus for cleaning tubulars, the apparatus comprising mechanical vibration means for creating acoustic waves, a high frequency current electrical source and a polarisation current source, wherein electrical current generated by the said sources is used to excite or activate the mechanical vibration means.
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Abstract
Apparatus for cleaning well bore tubulars comprises an ultrasound source suspended on a work string adapted to be run in the well, wherein the ultrasound source provides sufficient ultrasonic energy to remove scale or other undesirable debris or particles from, the well bore tubular.
50 Citations
15 Claims
- 1. Apparatus for cleaning tubulars, the apparatus comprising mechanical vibration means for creating acoustic waves, a high frequency current electrical source and a polarisation current source, wherein electrical current generated by the said sources is used to excite or activate the mechanical vibration means.
- 5. Apparatus for cleaning well bore tubulars, the apparatus comprising an ultrasound source suspended on a work string, the work string being suspended on drill pipe and the work string adapted to be run in the well, wherein the ultrasound source comprises a body member having an internal profile adapted to manipulate fluid pressure therein, the profile of the tool body to include convergent and divergent flow paths for the purpose of manipulating and increasing fluid pressure so that the ultrasound source provides sufficient ultrasonic energy to remove scale or other undesirable debris or particles from the well bore tubular.
- 10. Apparatus for cleaning well bore tubulars, the apparatus comprising an ultrasound source suspended on a work string adapted to be run in the well, wherein the ultrasound source provides sufficient ultrasonic energy to remove scale or other undesirable debris or particles from the well bore tubular, the apparatus further comprising means for directing the ultrasonic energy the means for directing the ultrasonic energy being one or more nozzles incorporated onto the tool for the purpose of directing the emitted energy, wherein the ultrasound source is located within the one or more nozzles.
- 12. A method for cleaning a well bore, the method comprising the steps of activating a submersible magnetostriction vibrator provided on a conductive wireline cable suspended in the well bore by means of surface modules adapted to generate a high frequency current and a polarization current to the magnetostriction vibrator via the wireline cable, wherein the said currents are converted by the magnetostriction vibrator into mechanical vibrations adapted to generate ultrasonic energy, and wherein said ultrasonic energy is adapted to clean the well bore tubular.
Specification