NEW METHOD OF INCREASING OIL RECOVERY IN MICROTRACK POROUS MEDIA

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Published: Monday, 26 August 2019 00:25

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¹GURBANOV R.S., ²MAMMADOVA M.A., ³HAJIYEV A.A.

¹The Ministry of Education of Azerbaijan Republic,

Research Institute “Geotechnological problems of oil, gas and chemistry"

²Azerbaijan State University of Oil and Industry

³Scientific Research Project Institute “Neftegaz”, SOCAR

Abstract. Firstly, it has experimentally been revealed that the reason of the anomalous properties manifestation of the viscous fluids, particularly water and these properties strengthening for anomalous fluids in the cracks is new micro-cracked effect of “microcrack-fluid”. For realization of the fractured fields development process it is recommended taking into consideration the detected micro-cracked effect in “microcrack-fluid” system.

The influences of the pressure variation value and cracks opening on oil recovery factor have been investigated according to viscous and anomalous oil displacement from plane-parallel and plane-radial microcracks by water, polymer solution and by PAA (Polyacrilamid). The models for assessment of the viscous and anomalous oils displacement efficiency by water and PAA solution for wide range of plane-parallel and plane-radial microcrack opening variation have been obtained mathematically.

Keywords: crack opening, anomalous water, hydraulic resistance, microcrack-liquid effect.