Geological structure update using fault seal analysis at the early stage of Chayandinskoye gas condensate field development

DOI: http://dx.doi.org/10.30686/1609-9192-2021-3-87-91

Markelov V.A.¹, Khusainov R.A.², Silov V.Yu.³, Chepkasova E.V.³ ¹ Gazprom PJSC, Moscow, Russian Federation ² Gazprom VNIIGAZ LLC, Moscow, Russian Federation ³ Gazprom dobycha Noyabrsk LLC, Noyabrsk, Russian Federation Russian Mining Industry №3 / 2021 р. 87-91

Abstract: The paper shows a sophisticated approach of fault sealing analysis for Chayandinskoye gas condensate field. The gas-oil system of the field is complicated by large number of the geological faults, which leads to its block structure. Preliminary calculations using the field simulation models showed that the faults conductivity might significantly affect technical and economic features of the field. Conducted interference well tests allowed to estimate fault conductivity before the juxtaposed field blocks development. The studies were carried out in gas-saturated porous medium with low formation-pressure conductivity in wells located at distance exceeding 3000 m. Hydrodynamic connectivity between three areas was analyzed. As a result, the field geological structure was locally updated: the initially considered sealing fault identified by the seismic survey data was reconsidered as a partially conductive and additional sealing boundary between two wells was recognized, which wasn’t identified earlier due to its low amplitude. Proposed approach allows to estimate the hydrodynamic blocks connectivity at the early stages of the field development thus to improve simulation models forecasts and project decision making.

Keywords: Chayandinskoye field; interference test; simulation model; fault conductivity; geological structure; sophisticated approach

For citation: Markelov V.A., Khusainov R.A., Silov V.Yu., Chepkasova E.V. Geological structure update using fault seal analysis at the early stage of Chayandinskoye gas condensate field development. Gornaya promyshlennost = Russian Mining Industry. 2021;(3):87–91. (In Russ.) DOI: 10.30686/1609-9192-2021-3-87-91.

Article info

Received: 12.05.2021

Revised: 24.05.2021

Accepted: 31.05.2021

Information about the authors

Vitaly A. Markelov – PhD in Engineering, Deputy Chairman of Management Committee, Gazprom PJSC, Moscow, Russian Federation.

Roman A. Khusainov – Researcher at the Center for Geological and Hydrodynamic Simulation, Gazprom VNIIGAZ LLC, Moscow, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Vitaly Yu. Silov – Head of the Hydrodynamic Research Group, Gazprom dobycha Noyabrsk LLC, Noyabrsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Ekaterina V. Chepkasova – Senior Geologist of the Hydrodynamic Research Group, Gazprom dobycha Noyabrsk LLC, Noyabrsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

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