Methods and apparatus to sample heavy oil from a subteranean formation
US7717172B2 · kind B2 · utility
8Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Apr 3, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of sampling fluid from a subterranean formation includes positioning a first tool having a heater in a borehole so that the heater is adjacent a portion of the subterranean formation; heating with the heater the portion of the subterranean formation; removing the first tool from the borehole; orienting a second tool having a sampling probe in the borehole so that the sampling probe is to contact a portion of the subterranean formation heated by the heater; and obtaining via the sampling probe a fluid sample from the portion of the subterranean formation heated by the heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.