Download PDF​

HYDROGEOLOGICAL FUNDAMENTALS OF LOCAL FORECAST OF FLUID PRESSURE SYSTEMS WITH AHRP IN CARBONATE NATURAL CAMBRIAN RESERVOIRS OF THE KOVYKTINSKOYE GAS CONDENSATE FIELD

A. G. Vakhromeev 1,5, I. V. Gorlov 2, N. V. Misiurkeeva 1,4, S. A. Sverkunov 1, Yu. K. Lankin 3, A. S. Smirnov 2

1 Institute of the Earth’s Crust, SB RAS, Irkutsk, Russia; 2 Gazprom geologorazvedka, Tyumen, Russia; 3 Irkutskgeofizika, Irkutsk, Russia; 4 Irkutsk Electroprospecting Company (IERP), Irkutsk, Russia; 5 Irkutsk National Research Technical University, Irkutsk, Russia

The rationale of the Abnormally High Reservoir Pressure systems local forecast is predetermined by the turn of drilling operations on gas-saturated sandstones of the Vendian Parfenovo Horizon, which underlie hipsometrically. Concepts of the regularities of formation and localization of highly saturated brines with AHRP within the Kovyktinskoye gas condensate field in the Orlinga thrust system zone of influence are formulated on the basis of analysis of the nappe-overthrust model of the halogen-carbonate hydrogeological Cambrian formation geological structure in the eastern Angara-Lena artesian basin. Structural and hydrogeological representations are laid in the basis of the physical-geological model of the geological and geophysical forecast of fluid systems, accumulations of brines and HCs with anomalous baric characteristics.

Keywords: concentrated brines, water drive systems, carbonate Cambrian reservoirs, nappe-overthrust model.

DOI 10.20403/2078-0575-2018-4-49-59