Impact of joint PP/PS inversion on shear-impedance estimation for exploration and production

Tura, Ali; Simmons, James; Copley, Matthew; Daneshvar, Sima; Damasceno, Andrea; Stitt, Joseph P.

doi:10.1190/segam2021-3579873.1

Cited by 2 publications

References 9 publications

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Application of multicomponent seismic data to tight gas reservoir characterization: A case study in the Sichuan Basin, China

Zhang,

Liang

et al. 2024

GEOPHYSICS

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Combining PP and PS-waves from multicomponent data is an effective hydrocarbon characterization strategy because these two wave types are sensitive to different subsurface properties. We present a case study using multicomponent data to characterize tight sandstone gas reservoirs in the Jurassic Shaximiao Formation, the western Sichuan Basin, China. In the study area, PP data have difficulties to distinguish sandstones, mudstones and gas sand, while recently acquired multicomponent data show potential for the joint characterization of lithology, porosity, and gas saturation from the combination of PP and PS reflections. Sandstones and mudstones show small P-velocity contrasts and large S-velocity contrasts. Thus, PS data provide a more accurate description of sandstones as a substantial proportion of sandstones are undetectable from PP sections. P-impedance is sensitive to sandstone porosity variation, and seismic-predicted porosities based on impedance inversion are in good agreement with log-interpreted porosities. The ratio of P-velocity to S-velocity is sensitive to gas accumulation, and the ratios derived from joint PP-PS prestack inversion are determined to be better than from PP prestack inversion in terms of their agreements with logs and distinct gas-sand boundaries.

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Application of multicomponent seismic data to tight gas reservoir characterization: A case study in the Sichuan Basin, China

Zhang,

Liang

et al. 2024

GEOPHYSICS

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Leveraging First-Ever OBN in India for Reservoir Characterization and Near-Field Exploration in a Carbonate Field at Offshore Mumbai, India

Soni,

Goswami,

Mukherjee

et al. 2023

Day 4 Thu, October 05, 2023

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This study had been performed to map the lateral and vertical heterogeneity of carbonate reservoir, using the newly acquired Ocean Bottom Node (OBN) data. Joint PP-PS pre-stack inversion has been performed to delineate the facies distribution and associated properties such as porosity and clay volume. This study greatly enhanced the depositional understanding of the area and helped to identify the in-fill well drilling and near-field exploration opportunities and provided attributes to update the existing reservoir model.

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Impact of joint PP/PS inversion on shear-impedance estimation for exploration and production

Cited by 2 publications

References 9 publications

Application of multicomponent seismic data to tight gas reservoir characterization: A case study in the Sichuan Basin, China

Application of multicomponent seismic data to tight gas reservoir characterization: A case study in the Sichuan Basin, China

Leveraging First-Ever OBN in India for Reservoir Characterization and Near-Field Exploration in a Carbonate Field at Offshore Mumbai, India

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