Geology and Hydrocarbon Potential

of the West Kamchatka

Offshore Sedimentary Basins

(2005)

A Dalmorneftegeophysika Study

TABLE OF CONTENTS

Geological and Geophysical Database

Basement Character

Stratigraphy

• Paleocene-Lower Oligocene, onshore

• Kytyim Suite - onshore

• Eleveney, Khulgun and Sosopkhan suites - onshore

• Unel and Ommai Suites - onshore

• Snatol Suite and equivalents - onshore

• Kovachin horizon - onshore

• Amanin-Gakhin horizon - onshore

• Paleocene-Lower Oligocene - offshore

  • Magadan #1 Well

  • Paleogene offshore

  • Upper Oligocene-Middle Miocene

  • Middle-Upper Miocene

  • Upper Miocene-Quaternary

Structural Characteristics of the Basins

• Gizhigin basin

  • Taigonos and Piyagin highs

  • South Taigonos high

  • Avekov trough

  • Viligin high

  • Keitevan trough

  • Kotov intrabasinal high

• Shelikhov basin

  • Kinkil and Lesnov-Palana highs

  • Kakhtanin high

  • Piyagin trough

  • Palana trough

  • Pensepel anticlinal zone

  • Tevin high

  • Shamankin trough

  • Podkagernaya anticlinal zone

• Penzhin basin

• West Kamchatka basin

  • Evensk and East Evensk highs

  • Ovra and Omgon highs

  • Sredinniy nose and Sobolev high

  • Shelikhov trough

  • Prievensk anticlinal zone

  • East and West Sukhanov anticlinal zones

  • Utkholok and Moroshechnaya highs

  • Khairyuzov trough

  • Ichin trough

  • Inush anticlinal zone

  • Tundrovaya anticlinal zone

  • Konon anticlinal zone

  • Amanin anticlinal high

  • Kolpakov trough

  • Primorskaya synclinal zone

  • Kshuk and Polovinnaya synclinal zones

  • Kunzhik horst-anticlinal zone

  • Tsentralnaya horst-anticlinal zone

  • Kvakchik anticlinal zone

• Golygin basin

Fields and Shows - Onshore West Kamchatka

• Discovered fields

  • Kshuk gas-condensate field

  • Lower Kvakchik gas-condensate field

  • North Kolpakov gas-condensate field

  • Middle Kunzhik gas-condensate field

• Oil and gas shows

  • Kolpakov and Ichin troughs

  • Voyampol Trough (Shelikov Basin)

  • Pustoretsk trough

Source Rocks

• Catagenesis

• Chemical and bitumin characteristics

Reservoirs

• Paleocene-Lower Oligocene sequence

• Upper Oligocene-Middle Miocene

• Middle-Upper Miocene

Seals

• Modeling of Petroleum Systems

• Typical Oil and Gas Traps

  • West Sukhanov structural trap

  • Tsentralnaya-1 structural trap

  • Pervoocherednaya trap

Main Hydrocarbon Charge Zones

• Gizhigin basin

• Shelikhov basin

  • Pensepel charge zone

  • Podkagernaya charge zone

  • At’avay and Gavana-Tochilin zones

• West Kamchatka basin

  • W Sukhanov, Prievensk and Inush zones

  • Kunzhik, Tundrovaya and Liman zones

  • Kalavayam, Oblukovin and Tsentral zones

  • Syndepositional charge zones

• Golygin basin

Resource Estimation

Prospect Resources

• Gizhigin Basin

• Shelikov Basin

• West Kamchatka Basin

Conclusions

Recommendations for Additional Work

• Voyampol, Sukhanov, Krutogorov and Kolpakov areas

Figures

• Study area index map

• Ice cover boundaries

• Tectonic zonation of the northern Sea of Okhotsk

• Stratigraphic units, northern Sea of Okhotsk

• Comparison of stratigraphic units of West Kamchatka

• Deep well thermograms and heat flow distribution

• Porosity and authigenic silica - Magadan #1 well

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, lithology model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, porosity variation model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, effective stress model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Permeability distribution

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Temperature model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Vitrinite reflectance model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Initial potential model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Transformation ratio model

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Total generated hydrocarbons

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Hydrocarbon migration

• Shelikhov trough: Krutogorov and Kalavayam anticlines, Line 38G81-36, Hydrocarbon saturation

• Paleogeography: Lower part of the Middle-Upper Miocene sequence, Kalavayam and Krutogorov traps

• Seismic time section, line 16352. Ptichya trap

Exhibits

• Data coverage map

• Structure-tectonic index map

• Well logs, lithology and palinology: Magadan #1 well

• Depth structure map: Top Paleocene-Lower Oligocene

• Depth structure map: Top U Oligocene-Mid Miocene

• Isopach map: Paleocene-Lower Oligocene sequence

• Isopach map: Upper Oligocene-Middle Miocene

• Seismic time section: Lines 1789-5252, 1789-52A

• Seismic time section: Line 1789-45

• Seismic time section: Line 38G81-34

• Seismic time section: Line 38G81-29

• Seismic time section: Line 38G81-36

• Seismic time section: Lines 22G80-50A, 22G80-50B

• Seismic time section: Line 23G80-72

• Seismic time section: Line 22G80-46

• Seismic time section: Line 22G80-37

• Seismic time section: Line 22G80-28

• Seismic time section: Line 1387-20

• Seismic time section: Line 1387-29

• Seismic time section: Line 1387-31

• Seismic time section: Line 1387-34

• Seismic time section: Line 1387-40

• Seismic time section: Line 1387-48

• Seismic time section: Line 23G80-52

• Paleogeographic map: Lower Oligocene

• Paleogeographic map: U Oligocene-Mid Miocene

• Paleogeographic map: Lower part of Middle-Upper Miocene, Kolpakov trough

• Cross section I-II

• West Sukhanov and East Sukhanov structural traps

• Tsentralnaya-1 structural trap

• Pervoocherednaya structural trap

• Correlation chart: Producing rocks, Lower Kvakchik and Kshuk fields

• Location map - Oil and gas prospects