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A new approach to the study of a representative anisotropic core sample and two-phase flow in anisotropic filtering porous environments

Maksimov V. M., Dmitriev N. M.

Nafta-Gaz

2013

R. 69, nr 4

302--309

In this paper the generalization of classical filtration models in the case of anisotropic reservoirs (porous, fractured and porous-fractured media) are considered. A new procedure for complex laboratory core studies for determination of filtration properties of anisotropic porous media is reviewed. The studies are based on the tensor representation of absolute and relative phase permeabilities (RFP). Analysis of the effects taking place in two phase flows in anisotropic reservoirs of different anisotropy types is carried out. Examples of the calculation are given.

W artykule rozpatrzono ogólnie klasyczne modele filtracji w przypadku zbiorników anizotropowych (porowatych, szczelinowatych, porowato-szczelinowatych). Omawiana jest procedura kompleksowych badań laboratoryjnych w celu określenia filtracyjno-pojemnościowych właściwości anizotropowych środowisk porowatych, w oparciu о tensorową prezentacje bezwzględnej i względnej fazowej przepuszczalności. Przeprowadzono analizę skutków występujących w dwufazowych przepływach filtrujących w zbiornikach anizotropowych о różnych typach anizotropii.

Opredelenie parametrov anizotropii plasta : teoria i eksperiment

Dmitriev N. M., Mihajlov N. N., Maksimov V. M.

Prace Naukowe Instytutu Nafty i Gazu

2012

nr 182 wyd. konferencyjne

635--638

Development of laboratory methods of determination of anisotropic filtrational properties of hydrocarbonic raw materials collectors represents an actual task for further development of oil and gas branch of fuel and energy complexes of the countries of the world. The accounting of filtrational properties anisotropy allows to choose optimum the direction of horizontal wells con- ducting, to increase indicators of fields development etc. Therefore recently the great interest is turned to collectors lateral anisotropy detection. The different techniques based on measurements of various physical properties are used. The fact of a collector lateral anisotropy existence is established, for example, by means of standard techniques by determination of elastic properties. In other works the nuclear magnetic resonance is applied, the device measuring speed of ultrasonic waves passing through a laterai surface of a core and others is used. Results of laboratory researches are given in the report on a real core material. At carrying out researches the device measuring speed of ultrasonic waves passing through a lateral surface of a large scale core with a diameter at 7-15 see was used. Researches were carried out on cores with ortotropic filtrational properties. As a result of the carried-out laboratory researches the tensor nature of absolute and relative permeability, limiting gradients is experimentally proved at a filtration of abnormal oils in anisotropic porous environments.