Method and apparatus for treating a wellbore with vibratory waves to remove particles therefrom
US6619394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2000 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process and apparatus for treating a wellbore, comprising subjecting a substantially same portion of the wellbore to vibratory waves produced by a plurality of vibratory wave generators. The vibratory waves may have about the same frequency or a plurality of frequencies, and the frequencies may partially overlap, not overlap, or be modulated across a range. Additionally, the frequencies may be modulated in an oval, hoop, and flexural modes. The vibratory waves may be produced by firing the vibratory wave generators simultaneously or in sequence. Combinations of a vibrating pipe, piston pulser, or valve may be used as vibratory wave generators. In a preferred embodiment, the thickness and change of thickness of a mudcake on the interior surface of a wellbore are measured to evaluate the effectiveness of the wellbore treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.