Electromagnetic surveying for mapping the content of subterranean reservoirs

US7026819B2 · kind B2 · utility

Assignees

• STATOIL ASA · NO
• Norgas Geotekniske Institut · NO

Inventors

• Terje Eidesmo · Trondheim, NO
• Svein Ellingsrud · Trondheim, NO
• Fan-Nian Kong · Oslo, NO
• Harald Westerdahl · Råholt, NO
• Stale Johansen · Melhus, NO

Key dates

• Filing date: Jul 22, 2003
• Grant date: Apr 11, 2006
• Expiry date: Dec 17, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A90/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for mapping a submarine or subterranean reservoir by conducting an electromagnetic survey using an electromagnetic field in the form of a wave. An electromagnetic field is applied by a transmitter on the seabed and detected by antennae. The nature of the detected reflected waves is used to determine whether the reservoir contains water or hydrocarbons, which may then be produced from a well that penetrates the reservoir.