Modified formation testing apparatus with borehole grippers and method of formation testing
US6581455B1 · kind B1 · utility
109Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Nov 1, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for obtaining samples of pristine formation or; formation fluid, using a work string designed for performing other downhole work such as drilling, workover operations, or re-entry operations. An extendable element extends against the formation wall to obtain the pristine formation or fluid sample. The apparatus includes at least one extendable gripper element for anchoring the apparatus during testing and sampling operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.