High temperature well packer
US4258926A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Jun 13, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/936
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well packer has a mandrel assembly with a tubular packing element supported thereon between upper and lower support members that are arranged to telescopically compress the packing element upon setting of the packer. The packer is constructed to retain the mandrel assembly in a telescopically retracted position compressing the packing element longitudinally until released. The tubular packing element has a quantity of loosely packed, heat resistant, compressible material of a substantially inorganic composition. Upon setting of the packer, the packing material is compressed to a tightly compacted configuration in order to establish a fluid tight seal between the mandrel assembly and the well bore. Because of the configuration of the tubular packing element, this packer is suited for operation in wells where substantially high temperatures are prevalent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.