Packer for testing and grouting conduits
US4067349A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Nov 15, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for testing and repairing a subsurface conduit using an inflatable packer, wherein the packer includes a fluid filled pressure responsive means, and a fluid pressure conductor means for transmitting fluid pressure to a pressure indicating means located on one end of the packer. The packer is positioned in the conduit such that the fluid filled pressure responsive means is adjacent that portion of the conduit to be tested. The packer is then inflated to isolate the conduit portion to be tested. Air pressure may then be introduced through means in the packer to the isolated conduit portion, and the pressure observed on the pressure indicating means by a television camera located in the subsurface conduit. The packer also includes means for injecting chemical grouting material into a leak in the isolated portion of the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.