Washout arrangement for a well
US6095243A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A washout arrangement for a well where a washout process is to take place to wash cement out of an annulus between two concentric casings 10, 16. Washports 36 are provided in a casing hanger 18, and an axially movable, telescopically extending lower body 40 is provided in a running tool 26 which is to engage with the casing hanger. When the running tool and casing hanger are engaged with each other, the lower body 40 can be moved axially (for example by mounting the lower body on a thread within the running tool and then rotating the lower body) between a position where it closes the washports and a position where the ports are open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.