Modern technology for seismic data processing in Srednebotuobinskoye oil-gas-condensate field

UDK: 550.834.05(26)
DOI: 10.24887/0028-2448-2021-2-31-35
Key words: seismic exploration, seismic processing, depth migration, upper section, depth velocity model, tomography, multiple waves
Authors: A.B. Kleshnin (RN-Exploration LLC, RF, Moscow), D.N. Tverdokhlebov (RN-Exploration LLC, RF, Moscow), E.I. Goguzeva (Taas-Yuriakh Neftegazodobycha LLC, RF, Lensk), R.S. Melnikov (Rosneft Oil Company, RF, Moscow)

Srednebotuobinskoye oil-gas-condensate field, being one of the oldest fields in Yakutia, has been well studied by both 2D and 3D seismic surveys. Extensive experience has been accumulated in processing seismic data in this region, which allows obtaining data of acceptable quality. However, a number of unresolved problems remain that significantly complicate obtaining high-quality seismic images and interpretation.

The paper presents the main problems inherent in seismic data at the Srednebotuobinskoye field (near-surface, trap bodies, multiples, etc.). On the example of the special processing performed with the use of prestack depth migration, ways of solving these problems based on advanced technologies for seismic data processing are demonstrated. Methods for constructing near-surface model based on tomographic refinement and surface wave inversion, methods for compensating for the influence of the trap on the underlying layers are presented. In the area of signal processing, advanced multiple suppression and noise attenuation technologies are described based on modeling and adaptive noise substraction. An integrated approach to processing, developed by Rosneft Oil Company specialists using prestack depth migration, significantly improved the quality of seismic data and increased the reliability of interpretation. However, not all problems remained resolved. The article provides recommendations for the further development of seismic technology to improve the quality of seismic material in the future. Recommendations are given for development both in the field of seismic data processing (new approaches to signal processing, FWI, etc.), seismogeological modeling, and in the field surveys (increasing the density of surveys, using nodal recording systems).

References

1. Tverdohlebov D.N., Dan'ko E.A., Kashirina E.G. et al., Model based multiple waves suppression based on modeling algorithms in the context of the high-velocity section of the Siberian Platform (In Russ.), Geofizika, 2018, no. 1, pp. 2–14.

2. Kleshnin A.B., Tverdohlebov D.N., Chirgun A.S. et al., Special'naja obrabotka shirokoazimutal'nyh SRR 3D v sejsmogeologicheskih uslovijah Sibirskoj platformy (Special processing of wide-azimuth 3D seismic exploration in seismic and geological conditions of the Siberian platform), Proceedings of EAGE Conference “Geobajkal 2018”, 2018, https://www.earthdoc.org/content/papers/10.3997/2214-4609.201802035

3. Tverdokhlebov D.N., Danʹko E.A., Kashirina E.G. et al., Finite-difference seismic forward modeling to improve the processing efficiency and quality of seismic interpretation (In Russ.), Geofizika, 2017, no. 6, pp. 10–18.

4. Tverdokhlebov D., Korobkin V., Kleshnin A. et al., FWI as an effective solution for land near-surface model building into the area with complex geological settings: Eastern Siberia case study, First Break, 2019, V. 37, no. 10, pp. 39–47.

5. Gurentsov N.E., Tverdokhlebov D.N., Kompleksnyy podkhod k proektirovaniyu sistem nablyudeniya 3D seysmorazvedki na osnove seysmogeologicheskogo modelirovaniya (An integrated approach to the design of 3D seismic observation systems based on seismic geological modeling), Proceedings of conference “GeoEvraziya 2018. Sovremennye metody izucheniya i osvoeniya nedr Evrazii” (GeoEurasia 2018. Modern methods of studying and developing the subsoil of Eurasian modeling), Moscow, 5–8 February 2018, 2018, https://www.gece.moscow/materialy

Srednebotuobinskoye oil-gas-condensate field, being one of the oldest fields in Yakutia, has been well studied by both 2D and 3D seismic surveys. Extensive experience has been accumulated in processing seismic data in this region, which allows obtaining data of acceptable quality. However, a number of unresolved problems remain that significantly complicate obtaining high-quality seismic images and interpretation.

The paper presents the main problems inherent in seismic data at the Srednebotuobinskoye field (near-surface, trap bodies, multiples, etc.). On the example of the special processing performed with the use of prestack depth migration, ways of solving these problems based on advanced technologies for seismic data processing are demonstrated. Methods for constructing near-surface model based on tomographic refinement and surface wave inversion, methods for compensating for the influence of the trap on the underlying layers are presented. In the area of signal processing, advanced multiple suppression and noise attenuation technologies are described based on modeling and adaptive noise substraction. An integrated approach to processing, developed by Rosneft Oil Company specialists using prestack depth migration, significantly improved the quality of seismic data and increased the reliability of interpretation. However, not all problems remained resolved. The article provides recommendations for the further development of seismic technology to improve the quality of seismic material in the future. Recommendations are given for development both in the field of seismic data processing (new approaches to signal processing, FWI, etc.), seismogeological modeling, and in the field surveys (increasing the density of surveys, using nodal recording systems).

References

1. Tverdohlebov D.N., Dan'ko E.A., Kashirina E.G. et al., Model based multiple waves suppression based on modeling algorithms in the context of the high-velocity section of the Siberian Platform (In Russ.), Geofizika, 2018, no. 1, pp. 2–14.

2. Kleshnin A.B., Tverdohlebov D.N., Chirgun A.S. et al., Special'naja obrabotka shirokoazimutal'nyh SRR 3D v sejsmogeologicheskih uslovijah Sibirskoj platformy (Special processing of wide-azimuth 3D seismic exploration in seismic and geological conditions of the Siberian platform), Proceedings of EAGE Conference “Geobajkal 2018”, 2018, https://www.earthdoc.org/content/papers/10.3997/2214-4609.201802035

3. Tverdokhlebov D.N., Danʹko E.A., Kashirina E.G. et al., Finite-difference seismic forward modeling to improve the processing efficiency and quality of seismic interpretation (In Russ.), Geofizika, 2017, no. 6, pp. 10–18.

4. Tverdokhlebov D., Korobkin V., Kleshnin A. et al., FWI as an effective solution for land near-surface model building into the area with complex geological settings: Eastern Siberia case study, First Break, 2019, V. 37, no. 10, pp. 39–47.

5. Gurentsov N.E., Tverdokhlebov D.N., Kompleksnyy podkhod k proektirovaniyu sistem nablyudeniya 3D seysmorazvedki na osnove seysmogeologicheskogo modelirovaniya (An integrated approach to the design of 3D seismic observation systems based on seismic geological modeling), Proceedings of conference “GeoEvraziya 2018. Sovremennye metody izucheniya i osvoeniya nedr Evrazii” (GeoEurasia 2018. Modern methods of studying and developing the subsoil of Eurasian modeling), Moscow, 5–8 February 2018, 2018, https://www.gece.moscow/materialy


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