Diffraction imaging using pseudo dip-angle gather

US11681043B2 · kind B2 · utility

Assignee

• SAUDI ARABIAN OIL COMPANY · SA

Inventors

• Lu LIU · Conshohocken, US
• Yi Luo · Dhahran, SA
• Tong Wang Fei · Dhahran, SA

Key dates

• Filing date: Sep 3, 2019
• Grant date: Jun 20, 2023
• Expiry date: Sep 18, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/20032
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Systems, methods, and apparatuses for generating a subsurface image using diffraction energy information are disclosed. The systems, methods, and apparatuses may include converting a shot gather into one or more plane-wave gather using a Radon transform. The plane-wave gathers may be extrapolated into source-side wavefields and receiver-side wavefields and further generate a pseudo dip-angle gather. The diffraction energy information may be extracted from the pseudo dip-angle gather, and an image containing subsurface features may be generated from the extracted diffraction energy information. The receiver-side wavefields may be decomposed using a recursive Radon transform.