Shale drill pipe
US9222314B2 · kind B2 · utility
1Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2013 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Nov 2, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill pipe for oil and gas drilling comprises two tool joints and a main portion between the tool joints, with two upsets adjacent to the tool joints, and a central section between the upsets. The outer diameter of the central section of the main portion is less than the outer diameter of the main portion upsets, and the outer diameter of the central section of the main portion is between 4″ and 4½″.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.