Near-simultaneous acquisition for borehole seismic

US9164185B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Emmanuel Coste · Oslo, NO
• John Richard Tulett · Yokohama, JP
• Jitendra S. Gulati · Houston, US
• Walter Scott Leaney · Katy, US
• Jakob Haldorsen · Sandvika, NO

Key dates

• Filing date: Jul 11, 2011
• Grant date: Oct 20, 2015
• Expiry date: Apr 11, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V2210/3246
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A technique facilitates performance of seismic profiling, such as three-dimensional vertical seismic profiling. A downhole acquisition system is provided with acoustic receivers designed to receive acoustic source signals. The firing of acoustic source signals is synchronized with the downhole acquisition system. Additionally, the firing of two or more acoustic source signals is controlled to provide simultaneous or nearly simultaneous timing of one acoustic source signal with respect to another acoustic source signal. A processing system is used to acquire and process a data stream of the initial shot and a data stream of the additional shot occurring simultaneously or nearly simultaneously.