Integrated method for estimation of seismic wavelets and synthesis of seismic records in depth domain

US11333783B2 · kind B2 · utility

Assignee

• CHENGDU UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Xuehua CHEN · Sichuan, CN
• Shuaishuai Jiang · Sichuan, CN
• Jie Zhang · Beijing, CN
• Wei Jiang · Sunnyvale, US
• Bingnan Lv · Sichuan, CN

Key dates

• Filing date: Jan 31, 2019
• Grant date: May 17, 2022
• Expiry date: Dec 26, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V2210/67
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for estimating the depth-domain seismic wavelets from depth-domain seismic data and synthesizing depth-domain seismic records. The method includes: obtaining depth coordinates and P-wave velocity v and density from well log, calculating a corresponding reflectivity series r; performing constant-velocity depth conversion for a seismic trace S and a reflectivity series r by using a velocity vc as a reference velocity to obtain the converted seismic trace S1 and the converted reflectivity series r1; and estimating a depth-domain seismic wavelet w based on the Gibbs sampling method; synthesizing depth-domain seismic record by using the P-wave v, the reflectivity series r and the estimated depth-domain seismic wavelet w.