Using the core glow intensity in ultraviolet light to justify the boundary values and saturation of low-permeable reservoirs
UDC: 622.276.031.011.43:550.822.3
DOI: 10.33285/2413-5011-2023-10(382)-77-83
Authors:
SPIRINA ANASTASIYA M.
1,
GILMANOVA NATALIYA V.1,2,
MOSKALENKO NATALIYA YU.1,2,
GILMANOVA KSENIYA YA.1
1 LUKOIL-Engineering Limited KogalymNIPIneft Branch Office in Tyumen, Tyumen, Russia
2 Tyumen Industrial University
Keywords: core, boundary values, oil saturation coefficient, core glow intensity, core photos, ultraviolet light, permeability coefficient
Annotation:
Low-permeable rocks with a complex structure of the pore space create the problem of quantitative determination of coefficients porosity and oil saturation. Standard approaches to oil saturation substantiation do not always give a reliable estimation. A high degree of heterogeneity of reservoir layers along the section distorts the true electrical resistivity as well as the oil saturation. As a result, the predicted and actual production characteristics of the reservoirs do not correspond to each other. Such disagreements lead to repeated estimation and recalculation of hydrocarbon reserves.
The development of complexly composed fields requires new, improved instruments for assessing hydrocarbon reserves. Geophysical methods of wells researching should reliably determine and quantify both the effective thickness and the "quality" of the reservoir (its reservoir properties and saturation).
Therefore, the use of point-by-point processing of core material to set up dependencies of the "core–log" type and substantiation of the calculation parameters can be considered as a key point. Using the automation of routine processes, the influence of the human factor and reduction of time can be minimized.
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