Electromagnetic surveying for hydrocarbon reservoirs
US7307424B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2003 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | May 13, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/083
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electromagnetic survey method for surveying an area that potentially contains a subterranean hydrocarbon reservoir. The method comprises detecting a detector signal in response to a source electromagnetic signal, resolving the detector signal along at least two orthogonal directions, and comparing phase measurements of the detector signal resolved along these directions to look for a phase separation anomaly indicative of the presence of a buried hydrocarbon layer. The invention also relates to planning a survey using this method, and to analysis of survey data taken using this survey method. The first and second data sets may be obtained concurrently with a single horizontal electric dipole source antenna. The method is also largely independent of a source-detector pair's relative orientation and so provides for good spatial coverage and easy-to-perform surveying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.