Secondary cutting structure
US8776912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2010 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Apr 2, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one aspect, embodiments disclosed herein relate to a secondary cutting structure for use in a drilling assembly, the second cutting structure including a tubular body and a cutter block, extendable from the tubular body, the block including at least three rows of cutting elements. In another aspect, embodiments disclosed herein relate to drilling a borehole, the method including disposing a drilling tool assembly in the borehole, wherein the drilling tool assembly includes a primary cutting structure and a secondary cutting structure, and wherein the secondary cutting structure ahs a cutter block having at least three rows of cutting elements. The method also includes actuating the primary cutting structure, drilling a first portion of the borehole with the primary cutting structure, actuating the secondary cutting structure, and drilling a second portion of the borehole with both the primary and secondary cutting structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.