Optimization of the application technology of steam-cycling treatments for horizontal wells on the basis of the hydrodynamic model
UDC: 622.276.031.011.433
DOI: 10.33285/0207-2351-2023-7(655)-9-13
Authors:
BELTYUKOV DMITRY A.1,
KOCHNEV ALEXANDER A.
1,
GALKIN SERGEY V.1
1 Perm National Research Polytechnic University, Perm, Russia
Keywords: steam-cyclic treatment, horizontal well, simplex model, high-viscous oil, reservoir simulation modeling
Annotation:
The article considers the prospects for applying the technology of horizontal wells’ steam-cyclic treatment on the example of Assel-Sakmar high-viscous oil deposit in the Osvanyurskoye field. The STARS thermal module of the specialized CMG software package was used for finite-difference calculations. The simplex hydrodynamic model takes into account three characteristic stages of horizontal wells’ steam cycling stimulation process: period of steam injection, period of soaking, period of production. Also a factor analysis with the help of the simplex model and the estimation of the influence of the following six parameters on the efficiency of a horizontal well steam-cycle treatment: the steam dryness degree, layer thickness, steam injection rate, injection pressure, soaking period duration, permeability anisotropy was performed. It was revealed that the use of horizontal wells’ steam-cycling treatments allows multiple increase of coverage and a reservoir oil recovery. The considered optimization technique helped to substantiate the best technological parameters of horizontal wells’ repeated steam-cycling treatments of the Assel-Sakmar deposit and the analogue objects.
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