Seismic resolution enhancement in shale-oil reservoirs-Reference-Cited by-同舟云学术

Seismic resolution enhancement in shale-oil reservoirs

Published:2018-09-01 Issue:5 Volume:83 Page:B281-B287
ISSN:0016-8033
Container-title:GEOPHYSICS
language:en
Short-container-title:GEOPHYSICS

Author:

Liu Xiwu¹,Gao Fengxia²^ORCID,Zhang Yuanyin³,Rao Ying⁴,Wang Yanghua⁵^ORCID

Affiliation:

1. Sinopec Petroleum Exploration and Production Research Institute, State Energy Center for Shale Oil Research and Development, Sinopec Key Laboratory of Shale Oil and Gas Exploration and Production, Beijing 100081, China.

2. China University of Geosciences (Beijing), School of Geophysics and Information Technology, Beijing 100083, China and Imperial College London, Centre for Reservoir Geophysics, Department of Earth Science and Engineering, London SW7 2BP, UK..

3. China Geological Survey, Oil and Gas Survey, Beijing 100029, China.

4. China University of Petroleum (Beijing), State Key Laboratory of Petroleum Resources and Prospecting, Beijing 102249, China and Imperial College London, Centre for Reservoir Geophysics, Department of Earth Science and Engineering, London SW7 2BP, UK.

5. Imperial College London, Centre for Reservoir Geophysics, Department of Earth Science and Engineering, London SW7 2BP, UK.

Abstract

We developed a case study of seismic resolution enhancement for shale-oil reservoirs in the Q Depression, China, featured by rhythmic bedding. We proposed an innovative method for resolution enhancement, called the full-band extension method. We implemented this method in three consecutive steps: wavelet extraction, filter construction, and data filtering. First, we extracted a constant-phase wavelet from the entire seismic data set. Then, we constructed the full-band extension filter in the frequency domain using the least-squares inversion method. Finally, we applied the band extension filter to the entire seismic data set. We determined that this full-band extension method, with a stretched frequency band from 7–70 to 2–90 Hz, may significantly enhance 3D seismic resolution and distinguish reflection events of rhythmite groups in shale-oil reservoirs.

Funder

National Natural Science Foundation of China

National Basic Research Program

Major National Science Technology Projects of China

China Postdoctoral Science Foundation

Science Foundation of China University of Petroleum

Publisher

Society of Exploration Geophysicists

Subject

Geochemistry and Petrology,Geophysics

Link

https://library.seg.org/doi/pdf/10.1190/geo2017-0765.1