Ball drop wellhead control apparatus
US9010412B2 · kind B2 · utility
78Cited by
9References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Oct 4, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0435
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A ball drop wellhead control apparatus provides a ball controller between a frac ball drop or frac ball injector used to drop frac balls into a frac fluid stream being pumped into a subterranean well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.