Methods and apparatus to sample heavy oil in a subterranean formation
US8899324B2 · kind B2 · utility
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14References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Jul 23, 2033 |
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 the fluid, pressurizing a portion of the subterranean formation, and collecting a fluid sample. Specifically, a viscosity of the fluid in a portion of the subterranean formation is reduced and a portion of the subterranean formation is pressurized 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.