Landing pipe
US11408234B2 · kind B2 · utility
0Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2018 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Jan 25, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A landing pipe includes a first tool joint, a second tool joint, and a main section extending from the first tool joint to the second tool joint, the main section having a first portion and a second portion. The first tool joint outer diameter is greater than both the main section first portion outer diameter and the main section second portion outer diameter. The main section third portion wall thickness is greater than the main section second portion wall thickness, and the main section second portion has a length range of 40% to 85% of an overall length of the landing pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.