Oscillating datalink useful in downhole applications
US11781425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2021 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Dec 10, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A datalink tool comprising an MWD-connected assembly disposed to move relative to an LWD-connected assembly. A hardwired electrical connection is provided between the MWD-connected and LWD-connected assemblies. An oil space is provided such that at least part of the hardwired electrical connection is configured to be immersed in a nonconductive oil contained inside the oil space. A compensator sleeve contributes at least in part to isolation of nonconductive oil in the oil space from drilling fluid residing outside the space. In some deployments, the drilling fluid may be conductive. The compensator sleeve is disposed to expand and relax in response to pressure variations in the drilling fluid, thereby attenuating a corresponding effect of the pressure variations in the nonconductive oil inside the oil space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.