Self-Avoiding Wormlike Chain Confined in a Cylindrical Tube: Scaling Behavior

The paper presents results of modeling of periodical regime of oil well for the purpose of monitoring and optimization of its operation. To describe non-stationary flow in the reservoir a planar-radial model of filtration is employed. The flow of multiphase flux in the well elements (casing, tubing, annulus) is described by 1D Navier-Stoks equations. The pump work is modelled by specification of its rate-head curve. To estimate the typical time duration of the processes in the well and in the reservoir a solution of a model problem for cylindrical tube is given. Through the examples a solution of a problem of optimization of periodical regime of oil wells is demonstrated. The comparison with field measurements is presented.

Download Full-text

Boundary element method in numerical study of three-dimensional Stokes flows in channels of arbitrary shape

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2012.1.018 ◽

2012 ◽

Vol 9 (1) ◽

pp. 94-97

Author(s):

Yu.A. Itkulova

Keyword(s):

Boundary Element Method ◽

Boundary Element ◽

Cross Section ◽

Numerical Study ◽

Three Dimensional ◽

Cylindrical Tube ◽

Variable Cross Section ◽

Variable Cross ◽

Periodic Flows ◽

Element Method

In the present work creeping three-dimensional flows of a viscous liquid in a cylindrical tube and a channel of variable cross-section are studied. A qualitative triangulation of the surface of a cylindrical tube, a smoothed and experimental channel of a variable cross section is constructed. The problem is solved numerically using boundary element method in several modifications for a periodic and non-periodic flows. The obtained numerical results are compared with the analytical solution for the Poiseuille flow.

Download Full-text

Scheme of the computational experiment for the construction of an element of the research stand of the fuel metering unit

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2014.1.016 ◽

2014 ◽

Vol 10 ◽

pp. 87-89

Author(s):

I.Sh. Nasibullayev ◽

E.Sh. Nasibullaeva ◽

E.V. Denisova

Keyword(s):

Fuel Consumption ◽

Computational Experiment ◽

Cylindrical Tube ◽

Viscous Friction ◽

Periodic Flow ◽

Objective Functions ◽

Computing Experiment ◽

Full Factorial

In this paper, the motion of a piston in a cylindrical tube is numerically studied with influence of dry and viscous friction and spring elasticity. Leading factors for models with dry and viscous friction are determined. A scheme for performing a full factorial computing experiment is proposed, where fuel consumption per unit time and fuel consumption for the period of periodic flow are chosen as objective functions.

Download Full-text