Application of Seismic Waveform Indicator Inversion in the Depth Domain: A Case Study of Pre-Salt Thin Carbonate Reservoir Prediction

Jinjin Hao (), Shiguo Wu, Jinxiu Yang, Yajun Zhang and Xuemei Sha
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Jinjin Hao: Research Institute of Petroleum Exploration and Development-Northwest, PetroChina, Lanzhou 730020, China
Shiguo Wu: Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China
Jinxiu Yang: School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China
Yajun Zhang: Research Institute of Petroleum Exploration and Development-Northwest, PetroChina, Lanzhou 730020, China
Xuemei Sha: Research Institute of Petroleum Exploration and Development-Northwest, PetroChina, Lanzhou 730020, China

Energies, 2023, vol. 16, issue 7, 1-14

Abstract: Prestack depth-migrated seismic data, having more accurate imaging position and amplitude fidelity than prestack time-migrated seismic data, are supposed to produce a higher quality reservoir prediction result by using depth-domain inversion. Some researchers have developed different methods of depth-domain seismic inversion. However, it has not been widely used in the industry probably because of two reasons: (1) it is a complex process to conduct depth-domain seismic inversion due to the nonstationary depth-domain seismic wavelet; and (2) time-domain seismic inversion is considered capable of solving the problem with less cost, both in regard to time and the economy. In this paper, we try to use the seismic waveform indicator inversion method in the depth domain. First, a forward model was built to demonstrate that seismic waveforms both in the time domain and the depth domain are highly correlated with lithologic associations. Second, a quantitative evaluation method of seismic data for reservoir prediction was proposed, which can help geophysicists estimate time-domain and depth-domain inversion effects before inversion. Finally, the seismic waveform indicator inversion method was implemented for presalt thin carbonate reservoir prediction in the Central Block at the eastern margin of the Pre-Caspian Basin. The depth-domain inversion result shows a relatively true structure and higher resolution validated by wells.

Keywords: depth-domain seismic inversion; seismic waveform; Pre-Caspian basin (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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