Method for drilling out a plug using a hybrid rotary cone drill bit
US10538970B2 · kind B2 · utility
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19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2016 |
| Grant date | Jan 21, 2020 |
| Priority date | — |
| Expiry date | Aug 1, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1204
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for drilling out a plug includes directing a hybrid rotary cone drill bit having a plurality of rotary cones into a borehole lined with a casing. A body of the plug is drilled out using milled teeth formed in the hybrid rotary cone drill bit. A slip of the plug is drilled out using cutter inserts secured into the rotary cone where the slip contacts the casing. The drilled out plug is directed up the borehole using a drilling fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.