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Methodology and results of complex laboratory studies of anisotropic reservoir properties
Drilling and development of hydrocarbon fields

Authors: Alexei N. KUZ’MICHEV was born in 1988, he graduated from Gubkin Russian State University of Oil and Gas in 2011 as Master of Engineering and Technology. He is now a graduate student of the Department of petroleum and underground fluid mechanics Gubkin Russian State University of Oil and Gas. He is author of 10 scientific publications in the field of anisotropic media models, petroleum and underground fluid mechanics, as well as petrophysics. E-mail: alekn88@gmail.com

Abstract: A laboratory technique for determining core-derived absolute permeability tensor for different types of anisotropy is presented. The method for determining core-derived lateral anisotropy and further, permeability tensors is based on measuring the rate of ultrasonic waves passing through the sample on the lateral surface of the core. Using this method, we first established the presence of lateral anisotropy and then, in accordance with established type of anisotropy of the rock sample we cut out the required number of cores for hydrodynamic and other studies. The results of determining the absolute permeability tensor, translucent characteristics, linear dimensions, as well as the results capillarimetrics are presented. These data confirm the tensor nature of absolute permeability, effective diameter and translucent characteristics. The method also allows to determine the permeability tensor of phase permeabilities, limiting gradients and to construct nonlinear filtration laws.

Index UDK: 532.546

Keywords: anisotropy, tensors of absolute permeability and translucency, tensor of characteristic linear dimensions, density of pore distribution along radii, effective diameter, capillary curves

1. Zakony techeniya s predel’nym gradientom v anizotropnykh poristykh sredakh. N.M. Dmitriev i dr. Gidrodinamika, 2010, no. 2, p. 223–229.
Dmitriev N.M., Dmitriev M.N., Muradov A.A. Modeli anizotropnykh sred. Osnovnye ponyatiya i opredeleniya. Moscow, 2009, 134 p.
3. Dmitriev N.M., Kadet V.V., Mamedov M.T. Metod laboratornogo opredeleniya fil’tratsionno-emkostnykh svoistv anizotropnykh kollektorov. 4-ya Mezhdunarodnaya konferentsiya i vystavka EAGE (Sankt-Peterburg, 5–8 aprelya 2010).
4. Dmitriev N.M., Maksimov V.M. O strukture tenzorov koeffitsientov fazovykh i otnositel’nykh pronitsaemostei dlya anizotropnykh poristykh sred. Dokl. RAN, 1998. T. 358, no. 3, p. 56-59.
Kadet V.V., Dmitriev N.M., Kuzmichev A.N. Determination of lateral anisotropy of rocks in core. 5-ya mezhdunarodnaya konferentsiya i vystavka EAGE (Saint Petersburg, 2-5 April 2012).
6. Metodika i rezul’taty kompleksnykh laboratornykh issledovanii fil’tratsionno-emkostnykh svoistv na kerne. V.V. Kadet, N.M. Dmitriev, A.N. Kuz’michev, S.P. Tsybul’skii. Rossiiskaya tekhnicheskaya neftegazovaya konferentsiya i vystavka SPE po razvedke i dobychi (Moskva, 16-18 oktyabrya 2012).
7. Kuznetsov A.M., Baishev A.B., Kuznetsov V.V. Opredelenie nachal’noi vodonasyshchennosti i kapillyarnoi krivoi metodom tsentrifugirovaniya. Neftyanoe khozyaistvo, 2010, no. 1, p. 49–51.
Sirotin Yu.I., Shaskol’skaya M.P. Osnovy kristallofiziki. M.: Nauka, 1975, 680 p