Rotary steerable drilling system
US11852015B2 · kind B2 · utility
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14References
20Claims
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Assignee
Inventor
Key dates
| Filing date | Apr 15, 2020 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Sep 13, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bias subsystem for a steerable bottom hole assembly (BHA) includes a housing having a rotational axis; a plurality of flow conduits in the housing to convey drilling fluid received at an upstream end of the housing towards a downstream end of the housing; a plurality of hydraulic thrust structures each extending from within the housing to the periphery of the housing; and a plurality of valve conduits in the housing to each convey drilling fluid to a respective one of the hydraulic thrust structures, wherein the flow conduits are not intermediate the hydraulic thrust structures and the rotational axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.