Formation tester tool assembly and method
US9845675B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2017 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Mar 2, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/087
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus includes a formation probe assembly that includes a probe piston configured for reciprocal movement between a retracted position and an extended position. The apparatus also includes a draw down assembly in fluid communication with the formation probe assembly. The draw down assembly includes a draw down piston being actuatable between a first position and a second position in a cylinder to draw fluid into the cylinder through the piston in the formation probe assembly and a position indicator configured to determine a position of the draw down piston in the cylinder. The apparatus includes a controller configured to control at least one of a rate and a volume of the fluid being drawn into the cylinder of the draw down assembly based, at least in part, on the position of the draw down piston determined by the position indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.