Chapter from:
AAPG Memoir 70: Abnormal Pressures in Hydrocarbon Environments
Edited by B.E. Law, G.F. Ulmishek, and V.I. Slavin
Copyright ©1998 by The American Association of Petroleum Geologists. All rights
reserved.
Memoir 70, Chapter 7: Abnormally High Formation
Pressures in Petroleum Regions of Russia and Other Countries of the C.I.S., by M.D. Belonin and
V.I. Slavin, Pages 115
- 121
Chapter 7
Abnormally High Formation Pressures in Petroleum Regions of Russia and
Other Countries of the C.I.S.
M.D. Belonin
V.I. Slavin1
VNIGRI
St. Petersburg, Russia
1Present Affiliation: Consulting
Petroleum Geologist, Berlin, Germany
Abstract
Statistical analyses of oil and gas pools in ancient platforms (Precambrian), young
platforms (post-Hercynian), and mobile belts (foreland troughs, and intermontane
depressions) of the Commonwealth of Independent States (C.I.S.), do not reveal any
significant differences in the relationships between commercial production and the
magnitude of overpressure. However, pressure data from all three structural provinces
indicate 90% of all oil and gas pools are in reservoirs with pressure abnormality
coefficients (Ac--the quotient of the measured pressure divided by the
hydrostatic pressure) less than 1.8 (0.81 psi/ft, 18.7 kPa/m), suggestive of a
commercially practical upper limit for productive reservoirs.
