Electrically insulating gap subassembly for downhole electromagnetic transmission
US6098727A · kind A · utility
55Cited by
23References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1998 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Mar 5, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0285
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electrically insulating gap subassembly for inclusion in a pipe string (30) comprising a pair of tubular members (90, 98) having an electrically insulating isolation subassembly (94) threadably disposed therebetween is disclosed. The electrically insulating isolation subassembly (94) has an anodized aluminum surface that provides electrical isolation to interrupt electrical contact between the two tubular members (90, 98) such that electromagnetic waves (46, 54) carrying information may be generated thereacross.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.