Methods and apparatus to sample heavy oil in a subterranean formation
US8496054B2 · kind B2 · utility
6Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2007 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | May 22, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/2401
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for sampling fluid in a subterranean formation includes, reducing a viscosity of a fluid, pressurizing a portion of the subterranean formation and collecting a fluid sample. Specifically, a viscosity of a fluid in a portion of the subterranean formation is reduced and a portion of the subterranean formation is pressurizing by injecting a displacement fluid into the subterranean formation. A sample of the fluid pressurized by the displacement fluid is then collected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.