Fault determination at the oil field by well-test data in the presence of errors in formation parameters estimation. Part I. Presence of errors in net pay thickness estimation
UDC: 622.276.1/.4.001.57
DOI: 10.33285/2413-5011-2023-11(383)-46-55
Authors:
YUDIN VALERIY A.
1,
VOLPIN SERGEY G.1,
EFIMOVA NATALIA P.1,
AFANASKIN IVAN V.1,
DYACHENKO ANATOLIY G.1,
CHEN-LEN-SON YURIY B.1
1 Federal Research Center Scientific Research Institute for System Analysis of the Russian Academy of Sciences, Moscow, Russia
Keywords: hydrodynamic studies of wells, faults, filtration characteristics of faults, numerical simulation of hydrodynamic studies, errors in determining effective thicknesses
Annotation:
Based on the data of computer hydrodynamic modeling, the possibility of identifying a fault and assessing its filtration characteristics in an oil field is considered according to the registration of a pressure stabilization curve (PSC) during the start-up of putting an exploratory well into operation which is located near the fault. The solution is found by comparing the PSC obtained experimentally and calculated for different filtration characteristics of the fault using the well-known reservoir parameters. The influence of the error when estimating the effective thickness of the formation on the result of the comparison has been studied. It is shown that the set goal can be achieved when the distance between the well and the fault does not exceed a certain maximum distance. It is determined by the type of error distribution in the estimation of the effective thickness and by the set of possible fault characteristics during computer simulation.
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