Reservoir Characterization through Seismic Visualization and Sequence Stratigraphy - An Approach to Reveal Reservoir Properties and Well Planning Strategies in Novogodneye Field - Russia

By

 Stig-A Kristoffersen¹, Lars Kollbotn¹

(1) Petec AS, Stavanger, Norway

 Reservoir Characterization through seismic visualization and Sequence stratigraphy - An approach to reveal reservoir properties and well planning strategies in Novogodneye Field - Russia

Deliniation and exploration wells have been drilled on the Novogodneye Field so far. These wells did not explore the field into details. Well spacing in the Novogodneye field allowed for certain uncertainties in reservoir characterization, hence difficulties in characterizing the reservoir heterogeneity with well data and 2D seismic alone.

A 3D survey was performed in 2001. This 3D seismic enables interwell heterogeneity description, and reduce the risk in locating development wells in the future. Integration of 3-D seismic data with petrophysical information about the reservoir and reservoir simulation history match results has improved our understanding of the reservoir complexity and improved the mapping of porosity distribution of the Jurassic reservoir intervals in Novogodneye field.

The field is confined to the Vyngapyakutinsky local rise, located in the central part of Vyngapurovsky megadome, complex Yamalo-Purovsky avlacogene of the Tomsk-Yamal tectonic belt. This region is characterized by large tectonism in Neogen- Quaternary times, which manifests itself in a large amplitude and length of linear submeridionally stretched megadomes, with faults of disjunctive enhanced thermal field abnormalities. Vyngapiakutinsky uplift is the most elevated one, compared to the adjacent Vyngayakhinsky and Vyngapurovsky uplifts.