Drill motor enhancement providing improved sealing performance and longevity
US8915312B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Apr 17, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F15/322
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Enhancements to a drill motor include a bearing pack assembly, a balancing piston, a recording transducer package (RTP), and a latch rod assembly for a drill motor to improve performance and reliability of a drill motor. The bearing pack assembly includes a bearing housing coupled to an end cap and a drive shaft extending into the end cap and the bearing housing. The bearing pack assembly also includes a thrust bearing disposed within the bearing housing, wherein the thrust bearing separates the drive shaft and the bearing housing, and a bearing sleeve disposed within the bearing housing, wherein a radial bearing is placed between the bearing sleeve and the drive shaft. The balancing piston includes a first and second hydrodynamic seal. The recording transducer package is self powered and gathers data from a plurality of sensors in the downhole tool. The latch rod assembly include a latch head is coupled to the rotor of a drill motor, wherein the latch head is larger than the opening in the bottom end of a top sub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.