Study Examples

Structure Map

AVO Analysis
     

Sakhalin Shelf - Ayashsky Area

Evaluation of Petroleum Potential

(2005)

 

A Dalmorneftegeophysika Study

 
   

Table of Contents

Introduction
Geography
Exploration History and Database
Regional Geology
Stratigraphy

  • Seismic sequences and sedimentation history

    • Upper Cretaceous system (K2)

    • Paleogene system (P)

    • Neogene system (N)

  • Seismic horizons

    • Stratigraphic position of seismic horizons

Structural Evolution

Petroleum Geology

  • Chaivo Field

  • Arkutun-Dagi Field

  • Venin Field

  • Ust-Tomi Field

Characteristics of Potential Hydrocarbon Traps

  • West Ayashsky structural-lithological trap

  • Ayashsky structural-lithological trap

Reservoir Rocks
Geophysical Hydrocarbon Indicators

Evaluation of hydrocarbon resources

  • Ayashsky structural lithologically-screened trap

  • South Ayashsky structural fault-bounded trap

  • West Ayashsky lithologically-screened trap

  • Nyi structural lithologically-screened trap

Recommendations on Further Exploration

Conclusions
 

STUDY EXHIBITS

FIGURES

  • Study area index map

  • Chronostratigraphic chart - Neogene deposits

  • Tectonic map

  • Composite seismic line, Dagi #2 well tie

  • Hydrocarbon generation and migration

  • Geological model: West Ayashsky, line 2089-45

  • Oil and gas distribution model: Lower part of Lower Nutov

  • Geological model: Nyi and Ayashsky traps, line 2089-52

  • Oil and gas distribution model: Middle part of Lower Nutov

  • Oil and gas distribution model: Upper part of Lower Nutov

TABLES

  • Seismic horizons

  • Characteristics of identified prospects

  • Parameters and oil resource estimates: Lower Nutov and upper part Okobykay

  • Parameters and free gas resource estimates: Lower Nutov and upper part Okobykay

ENCLOSURES

  • Seismic coverage map

  • Seismic time structure map: Basement

  • Seismic time structure map: Top Paleogene

  • Seismic time structure map: Seismic horizon 6 (Okobykay - Dagi boundary)

  • Seismic time structure map – Seismic horizon 5a (Lower Nutov - Okobykay boundary)

  • Seismic time structure map: Seismic horizon 5 (within Lower Nutov) (1:100,000)

  • Seismic time structure map: Seismic horizon 4 (Upper Nutov - Lower Nutov boundary)

  • Seismic time structure map – Seismic horizon 2 (Pomyr - Upper Nutov boundary)

  • Depth structure map: Basement

  • Depth structure map: Top Paleogene

  • Depth structure map: Seismic horizon 6 (Okobykay - Dagi boundary)

  • Depth structure map: Seismic horizon 5a (Lower Nutov - Okobykay boundary)

  • Depth structure map: Seismic horizon 5 (within Lower Nutov)

  • Depth structure map: Seismic horizon 4 (Upper Nutov - Lower Nutov boundary)

  • Depth structure map: Seismic horizon 2 (Pomyr - Upper Nutov boundary)

  • Isopach map: Paleogene (seismic horizons 7 to 8)

  • Isopach map: Uynin-Dagi (seismic horizons 6 to 7)

  • Isopach map: Okobykay (seismic horizons 5a to 6)

  • Isopach map: Lower part Lower Nutov (seismic horizons 5 to 5a)

  • Isopach map: Upper part Lower Nutov (seismic horizons 4 to 5)

  • Isopach map: Upper Nutov (seismic horizons 2 to 4)

  • Composite seismic line: DSS96-123, 9100-2, 2089-62 (Chaivo #2 well tie)

  • Composite seismic line: 78822 (onshore), 2092-23, 2089-43 (Ust-Tomi #9 well tie)

  • Composite seismic line: 1989-77, 2192-211, 2192-21, 2089-20, 2189-20 (Dagi #2 well tie)

  • Seismic seismic line: 2089-39 (Dagi #1 well tie)

  • Seismic seismic line: 2089-13 and 2189-13 (Dagi #1 well tie)

  • Seismic time section: Line 2089-17 and 2189-17

  • Seismic time section: Line 2089-27 and 2189-27

  • Seismic time section: Line 2089-45

  • Seismic time section: Line 2089-52

  • Seismic time section: Line 2089-57

  • Seismic time section: Line 2189-61

  • Seismic time section: Line 2189-64

  • Seismic time section: Line 2189-72А

  • AVO analysis: Line 9100-9

  • AVO analysis: Line 9100-3А

  • AVO analysis: Line 2192-9

  • AVO analysis: Line 2192.42

  • AVO analysis: Line 2192-53

  • AVO analysis: Line 2192-19

  • AVO analysis: Line 2192-110

  • AVO analysis: Line 2192-117

  • Distribution of hydrocarbon kitchens and charge zones: Beginning Middle Miocene (end Dagi time)

  • Distribution of hydrocarbon kitchens and charge zones: End Late Miocene (end Okobykay time)

  • Distribution of hydrocarbon kitchens and charge zones: Middle of Late Pliocene (end Nutov time)

  • Index map: Ayashsky area prospects

  • Paleofacies map: Lower Nutov N21 nt1a

  • Paleofacies map: Lower Nutov N21 nt1b

  • Stratigraphic correlation: Ayashsky area