Insulated drilling systems and associated methods
US12421811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2024 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Jan 18, 2044 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An insulated drill pipe joint for a drill string of a well system includes an outer sub defining a central passage extending between a first end of the outer sub and a longitudinally opposed second end of the outer sub, wherein the outer sub includes a first connector located at the first end and a second connector located at the second end, an inner mandrel slidably received in the central passage of the outer sub and defining a central passage extending between a first end of the inner mandrel and a longitudinally opposed second end of the inner mandrel, wherein an annular insulation compartment is formed that at least partially surrounds the inner mandrel and which is sealed from the central passage of the inner mandrel, and an insulation medium located in the insulation compartment and has a greater thermal resistance than the outer sub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.