Intelligent circulating sub for rotary/sliding drilling system and method
US11970930B2 · kind B2 · utility
0Cited by
11References
19Claims
0Family size
Inventor
Key dates
| Filing date | Jul 25, 2022 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Oct 5, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole intelligent Circulating Sub controller detects the difference between rotary drilling and sliding drilling, responds appropriately and quickly to multiple changes between rotary drilling and sliding drilling that may occur several times each stand of pipe. Additional controls prevent actuation of the Circulating Sub at inappropriate times. In one embodiment, a separate modular control sub is disclosed that may be utilized with and/or removably secured to a Circulating Sub and/or other types of downhole tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.