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New discovery as a result of complex approach to brownfield region evaluation

UDK: 550.8:622.276
DOI: 10.24887/0028-2448-2017-12-20-23
Key words: Western Siberia, seismic 3D, terrigenious sediments, migration, regional geology, model, well logs, core, uncertainty analysis
Authors: V.A. Shashel (Gazprom Neft PJSC, RF, Saint-Petersburg), M.V. Bukatov, D.N. Peskova, R.A. Oshmarin (Gazpromneft NTC LLC, RF, Saint-Petersburg), M.N. Nikolaev (Gazpromneft-Noyabrskneftegas JSC, RF, Noyabrsk), Yu.V. Masalkin (Gazpromneft-Angara LLC, RF, Saint-Petersburg)

Currently many prospective areas within Western Siberia still remain understudied and potentially promising, despite the huge amount of exploration works. These areas are mostly tending to be located at the side parts of the basin. Because of significant distance from main infrastructure centers of the province, new projects are characterized by marginal economics. Therefore, the successful identification and implementation of such projects become possible only if there is complex approach for options revealing, optimization of project economics by early integrated concept of project development, licensing management, and modern technologies and approaches application.

Real case of one the Gazprom Neft Company assets is analyzed in the frameworks of current paper. Regional study had started several years before license was obtained. Project team prepared regional geological investigation and retrospective analysis of initial exploration activities, which allowed to reveal and estimate key geological features and potential risks. At the next step, when license area had become a part of Company project portfolio, the most prospective zones were identified and ranked in order to start exploration works. As a result license territory was split into two phases with relatively independent technical and investment decisions. One the key results of this work became complex optimal exploration program which could be applied to other assets of the company.

References

1. Reshenie VI Mezhvedomstvennogo stratigraficheskogo soveshchaniya porassmotreniyu i prinyatiyu utochnennykh stratigraficheskikh skhem mezozoyskikhotlozheniy Zapadnoy Sibiri (Decision VI of the interdepartmentalstratigraphic meeting on the review and adoption of refined stratigraphic schemes of the mesozoic deposits of Western Siberia), ovosibirsk: Publ. of SNIIGGiMS, 2004, 114 p.

2. Kontorovich A.E., Kontorovich V.A., Ryzhkova S.V. et al., Jurassic paleogeographyof the West Siberian sedimentary basin (In Russ.), Geologiya I geofizika = Russian Geology and Geophysics, 2013, V. 54, no. 8, pp. 972–1012.

3. Neyman V.B., Teoriya i metodika paleotektonicheskogo analiza (Theory and methodology of paleotectonic analysis), Moscow: Nedra Publ., 1984, 80 p.

4. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikhlovushek nefti i gaza (Electrometric geology of sand bodies -lithological traps of oil and gas), Leningrad: Nedra Publ., 1984, 260 p.

5. Ampilov Yu.P., Ot seysmicheskoy interpretatsii k modelirovaniyu i otsenkemestorozhdeniy nefti i gaza (From seismic interpretation to modeling and evaluation of oil and gas fields), Moscow: Spektr Publ., 2008, 384 p.

Currently many prospective areas within Western Siberia still remain understudied and potentially promising, despite the huge amount of exploration works. These areas are mostly tending to be located at the side parts of the basin. Because of significant distance from main infrastructure centers of the province, new projects are characterized by marginal economics. Therefore, the successful identification and implementation of such projects become possible only if there is complex approach for options revealing, optimization of project economics by early integrated concept of project development, licensing management, and modern technologies and approaches application.

Real case of one the Gazprom Neft Company assets is analyzed in the frameworks of current paper. Regional study had started several years before license was obtained. Project team prepared regional geological investigation and retrospective analysis of initial exploration activities, which allowed to reveal and estimate key geological features and potential risks. At the next step, when license area had become a part of Company project portfolio, the most prospective zones were identified and ranked in order to start exploration works. As a result license territory was split into two phases with relatively independent technical and investment decisions. One the key results of this work became complex optimal exploration program which could be applied to other assets of the company.

References

1. Reshenie VI Mezhvedomstvennogo stratigraficheskogo soveshchaniya porassmotreniyu i prinyatiyu utochnennykh stratigraficheskikh skhem mezozoyskikhotlozheniy Zapadnoy Sibiri (Decision VI of the interdepartmentalstratigraphic meeting on the review and adoption of refined stratigraphic schemes of the mesozoic deposits of Western Siberia), ovosibirsk: Publ. of SNIIGGiMS, 2004, 114 p.

2. Kontorovich A.E., Kontorovich V.A., Ryzhkova S.V. et al., Jurassic paleogeographyof the West Siberian sedimentary basin (In Russ.), Geologiya I geofizika = Russian Geology and Geophysics, 2013, V. 54, no. 8, pp. 972–1012.

3. Neyman V.B., Teoriya i metodika paleotektonicheskogo analiza (Theory and methodology of paleotectonic analysis), Moscow: Nedra Publ., 1984, 80 p.

4. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikhlovushek nefti i gaza (Electrometric geology of sand bodies -lithological traps of oil and gas), Leningrad: Nedra Publ., 1984, 260 p.

5. Ampilov Yu.P., Ot seysmicheskoy interpretatsii k modelirovaniyu i otsenkemestorozhdeniy nefti i gaza (From seismic interpretation to modeling and evaluation of oil and gas fields), Moscow: Spektr Publ., 2008, 384 p.


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