Drop ball catcher apparatus
US6920930B2 · kind B2 · utility
55Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Dec 21, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/0413
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drop ball catcher apparatus for use with downhole tools in oil well drilling and installation operations. A drop ball catcher apparatus is used to receive and stow a drop ball ejected from a ball-actuated downhole tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.