Pressure build-up test under elastic-wave action on the reservoir

Марфин, Е.А.; Gavrilov, A.G.; Абдрашитов, А.А.; Кадыйров, А. И.

doi:10.1063/1.5135678

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…When studying the plane-parallel liquid flow through a porous medium under conditions of wave processing, Marfin et al [29] demonstrated that in the fields of the elastic waves, the ratio of the permeability of a porous medium to the viscosity of a liquid increases by 300% or more. Since well productivity is directly proportional to the increase in the well flow rate, the average change in the flow rate will also be 300%.…”

Section: Vwa and Vwa + Acid Techniquesmentioning

confidence: 99%

Assessment of the Elastic-Wave Well Treatment in Oil-Bearing Clastic and Carbonate Reservoirs

Поплыгин¹,

Qi²,

Гузев³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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A set of techniques for well treatment aimed to enhance oil recovery are considered in the present study. These are based on the application of elastic waves of various types (dilation-wave, vibro-wave, or other acoustically induced effects). In such a context, a new technique is proposed to predict the effectiveness of the elastic-wave well treatment using the rank distribution according to Zipf 's law. It is revealed that, when the results of elastic wave well treatments are analyzed, groups of wells exploiting various geological deposits can differ in terms of their slope coefficients and free members. As the slope coefficient increases, the average increase in the well oil production rate (after the well treatment) becomes larger. An equation is obtained accordingly for estimating the slope coefficient in the Zipf 's equation from the frequency of the elastic wave. The obtained results demonstrate the applicability of the Zipf 's law in the analysis of the technological efficiency of elastic-wave well treatment methods.

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Section: Vwa and Vwa + Acid Techniquesmentioning

confidence: 99%

Assessment of the Elastic-Wave Well Treatment in Oil-Bearing Clastic and Carbonate Reservoirs

Поплыгин¹,

Qi²,

Гузев³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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Predicting the permeability of the near-bottomhole zone during wave impact

Гузев

Поплыгин

et al. 2022

PMI

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The research reveals that during selection of a method to increase oil recovery it is necessary to take into account rheological features of fluid movement through the formation, effect of capillary forces and heterogeneity of reservoir properties of the productive formation in thickness and along the bedding. Low-frequency wave impact, which is used to increase production in oil fields, is considered. At low-frequency impact new fractures appear and existing fractures in rocks increase in size. The greatest increase in porosity and permeability of rocks occurs at an impact frequency up to 10 Hz. Dynamics of oscillation amplitude during wave's movement in saturated porous medium is studied in the paper: essential attenuation of amplitude occurs at distance up to 1 m from borehole axis. With increase of frequency from 1 to 10 Hz the intensity of amplitude's attenuation decreases. The technology was tested on a well in Perm region (Russia). The actual permeability value was 50 % higher than the predicted value. According to the results of hydrodynamic investigations processing, it was noted that the greatest increase of permeability took place near the wellbore, while away from the wellbore axis permeability remained almost unchanged. In order to refine the mathematical model for prediction of wave impact on rock permeability it is necessary to take into account interconnection of pore space structure, change of adhesion layer, as well as to study transfer of particles during vibration.

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Pressure build-up test under elastic-wave action on the reservoir

Cited by 2 publications

References 21 publications

Assessment of the Elastic-Wave Well Treatment in Oil-Bearing Clastic and Carbonate Reservoirs

Assessment of the Elastic-Wave Well Treatment in Oil-Bearing Clastic and Carbonate Reservoirs

Predicting the permeability of the near-bottomhole zone during wave impact

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