Resistivity antenna shield, wear band and stabilizer assembly for measuring-while-drilling tool
US5631563A · kind A · utility
18Cited by
42References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sensor protection system for use with an MWD tool includes a tubular body having lesser and greater diameter portions, antennas mounted in grooves in the lesser diameter portion, shield sleeves covering the antennas and being locked in place against longitudinal and rotational movement, and a wear band on the greater diameter portion to provide a standoff for the shield sleeve, the wear band also being locked against movement in the longitudinal and rotational directions. The locking mechanism also can be used to fix a sleeve-type stabilizer on the tubular body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.