Downhole pulsing-shock reach extender method
US11319765B2 · kind B2 · utility
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6References
9Claims
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Key dates
| Filing date | Oct 13, 2017 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Oct 13, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole pulsing-shock reach extender method for overcoming static friction resistance in coiled-tubing drilling-fluid-pressure driven downhole operations, by generating pulsed hydraulic shocks at the workstring by creating a fluid-hammer condition by repeated sudden opening and closing of a valve controlling a diverted portion of the flow of drilling fluid, while maintaining a constant flow of a portion of drilling fluid sufficient to operate and prevent damage to other components of the workstring, thereby extending the depth limit of downhole operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.