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Reservoir imaging using Fwi, Q-tomography & Bayesian classification: Black Sea case study from acquisition to drill bit

Reservoir imaging using Fwi, Q-tomography & Bayesian classification: Black Sea case study from acquisition to drill bit
Reservoir imaging using Fwi, Q-tomography & Bayesian classification: Black Sea case study from acquisition to drill bit
Black Sea Oil and Gas' concession XVa Midia is on the Romanian continental shelf of the Black Sea which the company operates on behalf of its partners Gas Plus International BV and Petro Ventures Resources SRL. This study demonstrates how a suite of seismic processing and QI (Quantitative Interpretation) technologies was optimised to fully resolve gas assets currently under development and highlight satellite exploration targets in Miocene to Pliocene age (late Pontian to Dacian) fluvio-deltaic sands and claystones. Near surface channel features and localised gas presence causes seismic imaging issues as amplitudes are attenuated and time structural push-downs are observed. A 3D survey was acquired during 2016 and processed together with three legacy 3D surveys. This data was used for exploration well planning for a drilling programme of two wells Q4 2017. During the seismic processing tests were run to investigate possible imaging improvements using Full Waveform Inversion (FWI) and Q-tomography. A subset of the 3D was reprocessed using these methods during Q4 2017. This presentation will demonstrate the imaging uplift achieved and the impact on the interpretation together with pre and post drill results guided by QI based on pre-stack seismic inversion and facies/fluid probability classification.
Fogg, A.
c0610d4b-e88c-4598-b6fb-a9c1fb8db0be
Costriiciuc, O.
54b527f9-4825-4887-ad17-afc450924cb0
Holden, R.
f1c70557-10b2-4a3c-b73b-21d8e5e3ed30
Moore, J.
d221f772-f9ba-48a5-810e-02b952519c6a
Fogg, A.
c0610d4b-e88c-4598-b6fb-a9c1fb8db0be
Costriiciuc, O.
54b527f9-4825-4887-ad17-afc450924cb0
Holden, R.
f1c70557-10b2-4a3c-b73b-21d8e5e3ed30
Moore, J.
d221f772-f9ba-48a5-810e-02b952519c6a

Fogg, A., Costriiciuc, O., Holden, R. and Moore, J. (2018) Reservoir imaging using Fwi, Q-tomography & Bayesian classification: Black Sea case study from acquisition to drill bit. 80th EAGE Conference and Exhibition 2018 : Opportunities presented by the energy transition, , Copenhagen, Denmark. 11 - 14 Jun 2018.

Record type: Conference or Workshop Item (Paper)

Abstract

Black Sea Oil and Gas' concession XVa Midia is on the Romanian continental shelf of the Black Sea which the company operates on behalf of its partners Gas Plus International BV and Petro Ventures Resources SRL. This study demonstrates how a suite of seismic processing and QI (Quantitative Interpretation) technologies was optimised to fully resolve gas assets currently under development and highlight satellite exploration targets in Miocene to Pliocene age (late Pontian to Dacian) fluvio-deltaic sands and claystones. Near surface channel features and localised gas presence causes seismic imaging issues as amplitudes are attenuated and time structural push-downs are observed. A 3D survey was acquired during 2016 and processed together with three legacy 3D surveys. This data was used for exploration well planning for a drilling programme of two wells Q4 2017. During the seismic processing tests were run to investigate possible imaging improvements using Full Waveform Inversion (FWI) and Q-tomography. A subset of the 3D was reprocessed using these methods during Q4 2017. This presentation will demonstrate the imaging uplift achieved and the impact on the interpretation together with pre and post drill results guided by QI based on pre-stack seismic inversion and facies/fluid probability classification.

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More information

Published date: 11 June 2018
Venue - Dates: 80th EAGE Conference and Exhibition 2018 : Opportunities presented by the energy transition, , Copenhagen, Denmark, 2018-06-11 - 2018-06-14

Identifiers

Local EPrints ID: 433557
URI: http://eprints.soton.ac.uk/id/eprint/433557
PURE UUID: c774c3dc-e2e0-4c21-a0c2-98e45e7fe376
ORCID for A. Fogg: ORCID iD orcid.org/0000-0003-1213-4324

Catalogue record

Date deposited: 27 Aug 2019 16:30
Last modified: 10 Nov 2021 03:58

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Contributors

Author: A. Fogg ORCID iD
Author: O. Costriiciuc
Author: R. Holden
Author: J. Moore

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