Formation tester tool assembly and method of use
US8950484B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2005 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Feb 16, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/087
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A formation tester tool can include a longitudinal probe drill collar having a surface, a formation probe assembly located within the probe drill collar, the formation probe assembly including a piston reciprocal between a retracted position and an extended position beyond the probe drill collar surface, the piston being slidingly retained within a chamber, a seal pad located at an end of the piston, the seal pad including an outer surface defining a partial cylindrical surface. The piston includes an outer surface having non-circular cross-sectional shape and the chamber includes an inner surface having a non-circular shape similar to the shape of the piston outer surface. The formation tester tool can include interchangeable draw down assemblies and a flow bore having a curving path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.