Downhole tools having features for reducing balling, and methods of forming such tools
US9157283B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2012 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Aug 9, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49982
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Downhole tools are provided with a topographical pattern, and anti-balling material is provided over the topographical pattern. The topographical pattern may be defined by at least one of a plurality of recesses extending into a surface of a body of the tool and a plurality of protrusions protruding from the surface. Downhole tools include an insert disposed within a recess in a body, and the insert comprises an anti-balling material having a composition selected to reduce accumulation of formation cuttings on the tools when the tools are used to form or service a wellbore. Downhole tools include anti-balling material disposed over a porous mass provided over the surfaces of the tools. Methods of forming downhole tools include providing anti-balling material over features on and/or in a surface of a body of a tool. Methods of repairing downhole tools include removing an insert therefrom and disposing a replacement insert therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.