Apparatus for preventing casing damage due to formation compaction
US5174340A · kind A · utility
54Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1990 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Dec 26, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L9/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for preventing casing damage due to high axial loading in a well as a result of compaction of the surrounding earth formations. The method consists of providing specially sized and located grooves on both the inside and outside diameters of a section of well casing. The grooves are designed and spacers may be used in some grooves to ensure symmetrical deformation of the casing when subjected to a compressive loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.