The high-temperature reaction regime of binary mixtures and enhancement of oil recovery from water-flooded fields

Aleksandrov, E. N.; Aleksandrov, P. E.; Кузнецов, Н. М.; Лунин, В. В.; Lemenovskii, D. A.; Rafikov, R. S.; Chertenkov, M. V.; Shiryaev, P. A.; Петров, А. С.; Lidzhi-Goryaev, V. Yu.

doi:10.1134/s0965544113040026

Cited by 6 publications

(9 citation statements)

References 1 publication

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“…Binary mixtures flood the oil reservoir an order of magnitude smaller than steam [1,[7][8][9][10][11]. In contrast to steam injection, injec tion of BMs entails no heat loss in the communica tions, as they meet and react, releasing heat, only in the oil reservoir.…”

Section: Thermal Methods Of Lowering the Viscosity Of Hydrocarbons-wamentioning

confidence: 99%

“…To produce a ton of bitu men, 2.5 to 5 tons of steam should be injected into the reservoir [6][7][8].…”

Section: Thermal Methods Of Lowering the Viscosity Of Hydrocarbons-wamentioning

confidence: 99%

“…In recent years, we have been repeatedly used binary mixtures (NH 4 NO 3 + NaNO 2 ) for decontami nation of the narrow zone (skin layer) near the bore hole [1,2,[7][8][9][10][11][12]. A low energy mixture containing 1 kg of NH 4 NO 3 releases an average of ~2 MJ of heat.…”

Section: Binary Mixtures and Their Application For Heating The Reservmentioning

confidence: 99%

“…We applied formula (8) to the two spherical segments, from radius r 1 to r* (with viscosity μ 1 ) and then from r* to r 2 (with viscosity μ). Equating the fluxes on both sides of r* and performing simple rearrangements, we obtained the following formula for the well produc tion: (9) where ρ ≡ r*/r 1 .…”

Section: Spherical Symmetrymentioning

confidence: 99%

“…(b) compositions based on organic nitrates are safe, since the front of decomposition of organic nitrate in the well usually moves at a constant speed, without speedup and transition to detonation [1,8]. (Ammo nium nitrate decomposes with transition to detonation at a water content less than 20%.…”

Section: Binary Mixtures and Their Application For Heating The Reservmentioning

confidence: 99%

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Supercritical fluid state of hydrocarbon-water fluids in a porous medium and optimization of fluid release from pores

Alexandrov

Кузнецов

Brusova

et al. 2011

Russ. J. Phys. Chem. B

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The conditions for transition to a state of supercritical (SC) fluid in the hydrocarbons-water sys tem are examined. A method for thermochemical heating the productive stratum near the oil well involving the transition of the oil-water formation fluid to the SC state (homogeneous, inseparable, and extremely fluid) is proposed. New chemical compositions, binary mixtures (BMs) of nitrates of organic amines (organic nitrate) and initiators of their decomposition, capable of ensuring the transition of the fluid to the supercrit ical state at the expense of high pressures and temperatures generated by rock pressure and heat of the exo thermic reaction of BM are tested. The effectiveness of the scheme of production of formation fluid in water flooded oil fields is assessed.

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Section: Thermal Methods Of Lowering the Viscosity Of Hydrocarbons-wamentioning

confidence: 99%

“…To produce a ton of bitu men, 2.5 to 5 tons of steam should be injected into the reservoir [6][7][8].…”

Section: Thermal Methods Of Lowering the Viscosity Of Hydrocarbons-wamentioning

confidence: 99%

Section: Binary Mixtures and Their Application For Heating The Reservmentioning

confidence: 99%

Section: Spherical Symmetrymentioning

confidence: 99%

Section: Binary Mixtures and Their Application For Heating The Reservmentioning

confidence: 99%

See 3 more Smart Citations

Supercritical fluid state of hydrocarbon-water fluids in a porous medium and optimization of fluid release from pores

Alexandrov

Кузнецов

Brusova

et al. 2011

Russ. J. Phys. Chem. B

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Code for calculating wave technology of thermal-gas-chemical formation treatment for oil recovery enhancement

Кравченко

Kroshilin

Dieva

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Transition to the development of hard-to-recover hydrocarbons, including in regions the far north, is fraught with difficulties in using classical technologies development. This is due to the low porosity and permeability of the reservoirs, high viscosity of the formation fluid and the manifestation of abnormal (non-Newton) properties of hydrocarbon fluids. In this regard, for more than ten years, pilot field research (FPI) in terms of the selection and optimization of technologies for collectors of complex structures. Since 2011, at the departments of the underground hydromechanics of Gubkin Russian State University of Oil and Gas (NRU) and gas wave dynamics of the Lomonosov Moscow State University, research is underway on the use of thermogas-chemical method with an injection of a binary mixture to stimulate the inflow. Since 2011, several settlement codes of different levels were created, which allowed carrying out support (pilot) in various fields. Based software products managed to evaluate the characteristics in the chemical reaction zone decomposition of the working chemical composition, evaluate safe regimes, excluding damage to the wellbore and assess the prolongation of the effect. Published more than 20 works (including patents) with the participation of the authors. Since 2019 the mathematical model is significantly complicated: the multiphase and non-isothermality of the process, non-uniformity of the flow. Currently established generalizing code, in the mathematical model of which is additionally taken into account different compressibility of phases and rheological properties of fluids, which allows more fine-tune the computational code for the type of a specific field, taking into account its geological features and damage to the bottomhole zone in the previous stages of development.

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Numerical Modeling of Thermal Effects in Well Processing by Solvent Binary Mixtures

Varavva

Vershinin

2017

OGBUS

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Аннотация. В статье рассмотрены вопросы эффективности метода повышения продуктивности скважин при их обработке водными растворами бинарных смесей. После закачки раствора в пласт инициируется экзотермическая реакция взаимодействия между компонентами бинарной смеси, сопровождающаяся выделением газов. Воздействие на призабойную зону нефтяных скважин разогретых продуктов химической реакции является комбинированным и сводится к трем явлениям: разогреву породы и находящейся в ней нефти; очистке призабойной зоны от парафинов, смол и кольматирующих отложений; расширению системы естественных трещин и появлению искусственных трещин. В результате обработки возле скважины формируются две области: повышенной проводимости и повышенной температуры, где снижается вязкость нефти. Размеры областей могут не совпадать. Каждая область вносит свой вклад в увеличение продуктивности скважины. В

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The high-temperature reaction regime of binary mixtures and enhancement of oil recovery from water-flooded fields

Cited by 6 publications

References 1 publication

Supercritical fluid state of hydrocarbon-water fluids in a porous medium and optimization of fluid release from pores

Supercritical fluid state of hydrocarbon-water fluids in a porous medium and optimization of fluid release from pores

Code for calculating wave technology of thermal-gas-chemical formation treatment for oil recovery enhancement

Numerical Modeling of Thermal Effects in Well Processing by Solvent Binary Mixtures

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