Horizontal hole cleanup tool
US4921046A · kind A · utility
14Cited by
13References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Dec 13, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well clean-out tool comprising a ported nipple, thimble, packer cup, packer cup mandrel and an inner mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.