In management of development processes, it is important to take into account the relationship of thermodynamic and hydrodynamic phenomena in the reservoir and well, as well as each specific field. The thermal field of a fractured reservoir during field development is little studied. During development, the temperature change in the fractured reservoir will occur mainly due to con-vective heat transfer and heat exchange between the fluid moving through the fractures and the blocks. In most cases, the practice of oil production deals with multiphase flows. In this regard, it is relevant to study the features of non-stationary heat and mass transfer in the reservoir, taking into account phase transitions and thermodynamic effects in the flow of gas-condensate mixture and on this basis the development of a method for assessing the thermophysical and filtration parameters of the reservoir. Within the framework of models of non-stationary heat and mass transfer during non-stationary filtration of gas-condensate mixture under gas mode, the problem of identification of thermal and filtration properties of rocks in purely fractured medium is solved. The temperature change curves at the borehole bottom are used as the initial information. The sought parameters were specified on the basis of gradient procedures using the methods of optimal control theory. Based on the model, an algorithm was developed and a program for numerical simulation of non-stationary hydrodynamic processes was created. It is shown that taking into account the non-isothermicity of the process one can estimate the desired reservoir parameters, can check the quality of interpretation and reduce the level of uncertainty in conditions of incomplete initial data.

 

Abasov M.T., Azimov E.Kh., Kuliev A.M. Hydrothermodynamic studies of wells in deep-seated fields. Azerbaijan State Publishing House. Baku, 1993, 170 p. (in Russian).

Abasov M.T., Jalalov G.I., Ibrahimov T.M., Mamedov A.M., Mamiyev V.S. Hydro-gas-dynamics of deep-seated deformable reservoirs of oil and gas fields. Proceedings of the Geology institute of Azerbaijan National Academy of sciences, No. 39, Nafta-press. Baku, 2012, 530 p. (in Russian).

Abasov M.T., Rasulov M.A., Feyzullaev Kh.A. Numerical solution of problems of gas-condensate mixture filtration. Proceedings of the Academy of Sciences of Azerbaijan Republic, Sciences of Earth Series, 1991, No 1-2, pp. 21-32 (in Russian).

Aziz H., Settari E. Mathematical modeling of reservoir systems. Trans. from English. Nedra. Moscow, 1982, 407 p. (in Russian).

Alishaev M.G., Rosenberg M.D., Teslyuk E.V. Non-isothermal filtration in the development of oil fields. Nedra. Moscow, 1985, 271 p. (in Russian).

Chekalyuk E.B. Thermodynamics of the oil reservoir. Nedra. Moscow, 1975, 240 (in Russian).

Dukhovnaya P.A. Improvement of methods of hydrodynamic calculations of non-isothermal water filtration in the design of water flooding of oil reservoirs in fractured reservoirs. Thesis for the degree of candidate of technical sciences. Funds of the North Caucasus State Research and Design Institute of the Oil Industry “SevKavNIPIneft”, Grozny, 1984, 230 p. (in Russian).

Filippov A.I., Akhmetova O.V. Temperature field in the reservoir and the well. Gilem. Ufa, 2011, 329 p. (in Russian).

Karachinsky V.E. Methods of geothermodynamics of gas and oil deposits. Nedra. Moscow, 1975, 168 p. (in Russian).

Parshin A.V. Research of non-stationary temperature fields in oil and gas reservoirs as applied to well thermometry. Abstract of the thesis for the degree of candidate of technical sciences. Funds of Bashkir State University, Ufa, 2012, 23 p. (in Russian).

Ramazanov A.Sh. Theoretical bases of thermohydrodynamic methods of oil reservoirs research. Thesis for the degree of doctor of technical sciences. Funds of Bashkir State University, Ufa, 2004, 269 p. (in Russian).

Vakhitov G.G., Gattenberger Yu.P., Lutkov V.A. Geothermal methods of control over the development of oil fields. Nedra. Moscow, 1984, 240 p. (in Russian).

Valiullin R.A., Ramazanov A.Sh., Sharafutdinov R.F. Thermometry of reservoirs with multiphase flows. Publishing house of Bashk. University. Ufa, 1998, 115 p. (in Russian).