A high-density, high-resolution joint 3D VSP-3D surface seismic case study in the Canadian oil sands

被引：3

作者：

Charles S. ^{[1
]}

Lin J. ^{[2
]}

Kuzmiski R. ^{[3
]}

Leung P. ^{[4
]}

Mouaki A. ^{[4
]}

Looi S.Y. ^{[4
]}

Liu Q. ^{[3
]}

机构：

[1] Serious Waves Inc., Calgary, AB

[2] Canadian Foresight Group Ltd., Calgary, AB

[3] WesternGeco, Calgary, AB

来源：

Leading Edge | 2019年 / 38卷 / 01期

关键词：

3D; anisotropy; broadband; case history; VSP;

D O I：

10.1190/tle38010035.1

中图分类号：

学科分类号：

摘要：

This Canadian oil sands case history illustrates how a high-density, high-resolution joint 3D vertical seismic profile (VSP)-3D surface seismic survey was designed, acquired, and processed to successfully meet the objective of obtaining a detailed image of the subsurface, including the cap rock, the internal architecture of the oil sands reservoir, the underlying carbonates, and the fault and fracture network that runs from surface to basement. The VSP-driven processing was essential in determining the effects of attenuation, multiples, and converted waves, and in quantifying the anisotropy for imaging and time-to-depth conversion. The joint 3D tomography inversion of the VSP and surface seismic data provided an accurate velocity model to migrate the 3D surface seismic data and the 3D VSP data in depth. Each of the 28 wells located within the survey area tied in to the final seismic volume very well. Depth imaging resolved the shallow velocity variations that the initial time processing could not. The apparent (but erroneous) azimuthal velocity effects in the time processing were minimized in the depth processing, resulting in an anisotropy velocity model that was in accordance with the 3D VSP data. A 3D full-waveform inversion test complemented this case history. © 2019 Society of Exploration Geophysicists. All rights reserved.

引用

页码：35 / 44

页数：9

共 21 条

[1]

Alberta's Oil Sands Proven Reserves, 2015, (2015)

[2]

Primrose Flow to Surface Final Report, (2015)

[3]

Ansorger C.D., Leung P., Hughes J., Mouaki A., Charles S., Using Surface Waves Instead of Abusing Them for Seismic Data Processing - A Canadian Oil Sands Case History: GeoConvention 2016, (2016)

[4]

Bakulin A., Woodward M., Nichols D., Osypov K., Zdraveva O., Localized Anisotropic Tomography with Well Information in VTI Media, (2009)

[5]

Brenders A.J., Pratt R.G., Full waveform tomography for lithospheric imaging: Results from a blind test in a realistic crustal model, Geophysical Journal International, 168, 1, (2007)

[6]

Brenders A., Charles S., Pratt R.G., Frequency-domain Waveform Tomography in the Foothills: Velocity Model Estimation with Synthetic Long-offset Data: CSPG CSEG CWLS Convention, (2008)

[7]

Charles S., Hostetler J., Lin J., Luo X., Squeezing Every Last Drop out of a Coarse 3D Oil Sands Dataset for Refining 3D Survey Design - A Case History: GeoConvention 2013, (2013)

[8]

Charles S., Hostetler J., Lin J., Luo X., Roberts K., No magic from 5D interpolation on a coarse 3D oilsands dataset - A case history, CSEG Recorder, 39, 3, (2014)

[9]

Charles S., Lin J., Du L., Mouaki A., Constraining a 3D anisotropic tomography inversion with 800 wells - A Canadian oil sands case history, First Break, 34, 9, (2016)

[10]

De Meersman K., S-wave Attenuation Within the Weathering Layer of An Alberta Heavy Oil Field: CSPG CSEG CWLS Convention, (2011)

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