TGS East Russian Arctic- Geology and Hydrocarbon Systems

WWW.TGS.COM © 2013 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED.

TGS | EAST RUSSIAN ARCTIC 2013

EAST RUSSIAN ARCTIC

Geology and Hydrocarbon Systems

Regional Geological Reports Based on New Field Studies and Analytical Work


EAST RUSSIAN ARCTICTGS, in cooperation with St. Petersburg State University and other Russian academic entities, is pleased to announce the completion of the first phase of the project.

Geology and Hydrocarbon Systems of the East Russian Arctic Offshore

The East Russian Arctic shelf, including Laptev, East Siberian and Chukchi Seas, contains a number of significant sedimentary basins and represents some of the most promising offshore areas for hydrocarbon discoveries. Nevertheless, due to the absence of offshore wells, only a sparse grid of seismic lines and very limited information on the adjacent land masses, the regional geological structure remains uncertain.

The current evaluation and understanding of regional hydrocarbon resources of the Laptev Sea and other Arctic areas will be greatly increased by these comprehensive geological reports, especially when used in conjunction with new seismic data being acquired by TGS in 2011.

The objective of the project is to obtain a better understanding of the main characteristics of petroleum geology in the East Siberian

Arctic sedimentary basins. This has been achieved through a series of regional geological field studies over coastal areas and islands, followed by analytical works on collected samples, of which the coastal Laptev Sea area is the first. This project will serve as a basis for future assessments of the hydrocarbon potential of the Siberian Arctic shelf. In addition, the samples will provide an invaluable database for future analysis as exploration progresses.

Main Project ObjectivesTectonic Evolution of the Offshore Sedimentary Basins:

� Structural styles � Timing of tectonic/magmatic events � Erosion/Uplift/Cooling history � Plate tectonic restorations

Petroleum Geology of the Offshore Sedimentary Basins: � Provenance and supply paths for basins’ clastic infill � Rocks composition and depositional environments � Sedimentary processes � Post-sedimentary (diagenetic) processes � Source rocks composition and nature � Distribution of source, reservoir and seal � Paleozoic, Mesozoic and Cenozoic hydrocarbon systems

and play elements

Main sedimentary basins of Eastern Russian Arctic

Basic Approach to the Project

Fieldwork

A number of field studies have been carried out over several field seasons to collect new data and rock samples relevant to deciphering the petroleum geology of the offshore sedimentary basins. These studies will provide new and unique information, as the field work will be carried out in areas which are hardly accessible.

Laboratory Studies of Samples

Laboratory studies of samples, using current state-of-the-art techniques and technology, have been a key part of the project and are a significant improvement on previous studies in the East Arctic.

Laboratory StudiesMain Objectives:

� Maturation, chemical and isotopic composition of the organic matter

� Reservoir and seal quality � Thermal evolution of the rocks and provenance study � Study of depositional environments and dating of events � Tectonic/structural evolution and dating of events

Analytical Methods: � Thin/polish section and mineralogical studies � Clay minerals study � Rock evaluation and vitrinite studies � Chemical study (organic and non-organic matter) � Isotopic study (organic and non-organic matter) � (U-Th)/He and/or fission track study � U-Pb detrital zircon dating



EAST RUSSIAN ARCTIC

Phase I: Laptev Sea Coastal Areas Fieldwork

Lena-Anabar-Khatanga-Taimyr Coastal Areas: the Key to Petroleum Geology of the Laptev Sea Shelf

The main objective behind the Laptev Sea coastal margin field traverses is to enhance the knowledge of the area by applying new ideas and laboratory technologies that were not available 20 years ago when most of the existing regional studies were carried out.

During the field seasons the Northernmost Siberian Craton, Easternmost Enisey-Khatanga, Westernmost Anabar-Lena Depressions and Olenek fold zone have been studied.

Field Projects

� Khatanga (1A) area: Palaeozoic to Mesozoic rocks units

� Olenek (1B) area: Neoproterozoic to Mesozoic rock units

� Lena River (1C) area: Mesozoic and Cenozoic successions

� Anabar River and Enisey-Khatanga wells (1D) area Mesoproterozoic to Mesozoic successions

A total of over 1,000 samples have been collected for further laboratory studies.

Study areas

Deliverables

� Detailed report of each fieldwork area (1A, 1B, 1C and 1D)

� Summary report of geology of Laptev Sea coastal area

� Appendices comprising all analyses completed

� Other Arctic reports/updates to be provided at defined milestones

� Report will be available in both hard copy and in GIS

Analysis and interpretation in the Laptev Sea Margin

Analysis and interpretation in the Laptev Sea Margin



NORWAY Tel: +47 66 76 99 00 Email: [email protected]

For more information, contact TGS at:


Main geographical features of the East Arctic region

EAST RUSSIAN ARCTIC

Main areas of the project, and tentative schedule for field work:

Area I : Laptev Sea coastal areas - completed January 2011

Area II : New Siberian Islands - expected completion 2012 - 2014

Area III : Chukchi Peninsula and Wrangel Island - expected completion 2011 - 2013

TGS East Russian Arctic- Geology and Hydrocarbon Systems

Data & Analytics

east arctic

offshore sedimentary

east russian arcticgeology

east russian arctictgs

new field studies

arctic areas

previous studies

hydrocarbon potential