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Book Chapter

Introduction

Published:
January 01, 1991

Abstract

The Soviet Union now produces more than 20% of the world’s oil, and the West Siberian oil-gas province accounts for more than half of this production. Soviet planning calls for maintaining this high rate of production through 1990 and beyond; therefore, the importance of West Siberian oil in the world economy is very significant.

Study of the petroleum geology of the West Siberian basin also contributes much to our understanding of the geological processes by which these huge quantities of oil and gas were generated and then trapped in giant and supergiant fields. Present in the basin are all the geological circumstances favorable for petroleum: highquality source beds, excellent reservoirs, extensive seals, just the right temperatures for maturation, and absence of later significant faulting or erosion to adversely disturb earlier accumulations of oil and gas.

The West Siberian oil-gas province has an area of 3.5 million km2 (1.3 million mi2) (Figure 1) and is the largest flat area on earth. More than 1000 km upstream on the Ob River, elevations are still less than 100 m above sea level. Although the winters are unrelentingly cold, it is during this time that work is best accomplished in many areas because in the summer, the upper part of the permafrost melts and the ground becomes very soggy. Furthermore, the rivers flow north, and spring melting takes place first in the upstream parts, causing downstream flooding over vast areas. This results in mosquito populations that are at best an extreme nuisance.

There were very few roads

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Contents

AAPG Studies in Geology

Geology and Hydrocarbon Habitat of the West Siberian Basin

James A. Peterson
James A. Peterson
U.S. Geological Survey Missoula, Montana, U.S.A.
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James W. Clarke
James W. Clarke
U.S. Geological Survey Reston, Virginia, U.S.A.
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American Association of Petroleum Geologists
Volume
32
ISBN electronic:
9781629811178
Publication date:
January 01, 1991

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