«Geology, geophysics and development of oil and gas fields»

On the need to take into account the tectonic-stratigraphic factor when choosing the density of the well grid in the conditions of oil deposits of the Ural-Volga region

UDC: 622.276.342:553.98(470.4/.5)
DOI: -

Authors:

¹ Institute of Oil and Gas of the Federal State Budgetary Educational Institution "USPTU" in Oktyabrskiy, Oktyabrskiy, Russia

Keywords: deposits of carbonate reservoirs of the Ural-Volga region, well grid density, oil recovery coefficient, tectonic-stratigraphic factor, differentiation of objects, geological and statistical modeling

Annotation:

Under the conditions of deposits in the carbonate reservoirs of the Ural-Volga region, studies have been conducted at more than 500 sites and a significant effect of the density of well grids on the final oil recovery coefficient during natural development has been established. The different nature and degree of this influence are shown in the conditions of groups of objects confined to isolated tectonic-stratigraphic elements. Models of the dependence of the degree of reserves development on geological and tectonic factors are obtained, suggesting the mandatory differentiation of objects when using them. Alternative dependencies are proposed for their application in practice, depending on the available information about the deposits.

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