Jet flow adjustment method for rotary steerable downhole release
US11982146B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 25, 2021 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | May 25, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A jet flow adjustment method for rotary steerable downhole release includes steps of: defining a diversion ratio p of a jet nozzle by a ground control system; and sending the diversion ratio p of the jet nozzle to a control unit of a downhole rotary steerable system; and determining an opening areas of the jet nozzle by the control unit according to the diversion ratio p of the jet nozzle and an equivalent channel area S of a drilling tool; controlling an adjustable bypass valve by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle, so as to control an overlapping area between sector holes of a rotor end and a stator end, thereby opening the jet nozzle for release. The present invention has simple control and strong release ability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.