Slumping Flows in Narrow Eccentric Annuli: Design of Chemical Packers and Cementing of Subsurface Gas Pipelines

Frigaard, I.A.; Ngwa, Gideon A.

doi:10.1007/s11242-009-9467-1

Cited by 7 publications

(3 citation statements)

References 30 publications

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“…Frigaard and Ngwa 10 have worked in predicting the rheological properties that are necessary to prevent the annular plug fluid from flowing under the action of buoyancy or indeed to predict how far the plug material may flow for given rheological properties for annular fluid flow in oil wellbore construction. Mathematically, these flows were modeled using a Hele-Shaw approximation of the narrow annulus.…”

Section: Introductionmentioning

confidence: 99%

Exploring the hole cleaning parameters of horizontal wellbore using two-phase Eulerian CFD approach

Dewangan

Sinha

2016

The Journal of Computational Multiphase Flows

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The present investigation deals with the flow through concentric annulus with the inner cylinder in rotation. This work has got its importance in the petroleum industries in relation to the wellbore drilling. In wellbore drilling, the issue of the hole-cleaning is very serious problem especially in case of the horizontal drilling process. The effect of the various parameters like slurry flow velocity, inner cylinder rotational speed, inlet solid concentration which affect hole cleaning was discussed. Their effect on the pressure drop, wall shear stress, mixture turbulence kinetic energy, and solid-phase velocity and slip velocity were analyzed, which are responsible for solid-phase distribution. Flow was considered to be steady, incompressible and two-phase slurry flow with water as carrier fluid and silica sand as the secondary phase. Eulerian approach was used for modeling the slurry flow. Silica sand was considered of spherical shape with particle size of 180 mm. ANSYS FLUENT software was used for modeling and solution. Plotting was done using Tecplot software and Microsoft Office.

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Section: Introductionmentioning

confidence: 99%

Exploring the hole cleaning parameters of horizontal wellbore using two-phase Eulerian CFD approach

Dewangan

Sinha

2016

The Journal of Computational Multiphase Flows

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“…In order to analyze flow characteristic of H-B fluid in the entire annular, the solution of stream function ψ is needed (Frigaard and Pelipenko, 2003;Frigaard and Ngwa, 2010). The modules of stream…”

Section: Stream Function Formulation Of H-b Fluid In the Annulusmentioning

confidence: 99%

Study on Flow Characteristic of Non-Newtonian fluid in Eccentric Annulus

Li¹,

Wang²,

Wang³

et al. 2013

RJASET

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This study studied the flow characteristic of non-newtonian in eccentric annulus of highly-deviated well. On the basis of dimensionless analysis of motion equations and continuity equation, Hele-Shaw model suitable for fluid flow in the annulus was derived. Combined with H-B rheological model, velocity and stream distribution model were founded and calculated by numerical method. Furthermore, two-dimensional flow characteristic in eccentric annulus was got and the influence of different factors (such as yield stress, pressure gradient or eccentricity) on velocity distribution in condition of laminar flow was analyzed. Width of flow core in the annular is proportional to yield stress and inversely proportional to pressure gradient. In eccentric annulus, eccentricity influences the stream distribution remarkably: with the increment of eccentricity, the contour lines of stream function gradually centralize in the widest annular gap, however distribute the most loosely in the narrowest annular gap. Axial velocity is the largest in the widest gap. The larger eccentricity is, the larger contrast of axial velocity between in the widest gap and in the narrowest gap is. There is the largest azimuthal velocity in an annular gap of a certain azimuthal angle, however which equals to zero in the widest and narrowest annular gap separately. The larger eccentricity is, the more homogeneous azimuthal velocity is. The velocity contrast in the entire annulus can be smoothed by increasing pressure gradient, power law index or decreasing yield stress.

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“…al. [4] has worked in predicting the rheological properties that are necessary to prevent the annular plug fluid from flowing under the action of buoyancy, or indeed to predict how far the plug material may flow for given rheological properties for annular fluid flow in oil wellbore construction. Mathematically, these flows were modelled using a Hele-Shaw approximation of the narrow annulus.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Various Numerical Differencing Schemes in Predicting Non-Newtonian Transition Flow Through an Eccentric Annulus With Inner Cylinder in Rotation

Dewangan

Sinha

2014

IJMIE

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Flow through annulus is a widely solved problem in fluid mechanics because of its practical applicability in many areas. In oil well drilling, cuttings generated are of non-Newtonian nature which flows through an eccentric annulus with inner cylinder in rotation, considering the real drilling situations. In the present work, a comparison have been done amongst three differencing schemes, the second order upwind, the Power law scheme and QUICK scheme used in computational fluid dynamics solution algorithms, so as to find the best amongst them to solve transition flow for this case as well as in general. A three dimensional orthogonal hexahedral mesh with suitable boundary conditions & input parameters was taken as computational domain for eccentric annulus. This was solved with standard k-ω turbulence model and SIMPLE algorithm. Results were validated against the published experimental work of J. M. Nouri, et. al [1]. Radial velocity, axial velocity and tangential velocity of fluid were plotted along chosen planes and contours of molecular viscosity as well as turbulence kinetic energy were observed for comparison amongst the solutions obtained by three differencing schemes. Although in most of the cases close agreement have been observed between computational data, but as far as prediction of radial velocity is concerned there was surprising difference amongst the three schemes.

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Slumping Flows in Narrow Eccentric Annuli: Design of Chemical Packers and Cementing of Subsurface Gas Pipelines

Cited by 7 publications

References 30 publications

Exploring the hole cleaning parameters of horizontal wellbore using two-phase Eulerian CFD approach

Exploring the hole cleaning parameters of horizontal wellbore using two-phase Eulerian CFD approach

Study on Flow Characteristic of Non-Newtonian fluid in Eccentric Annulus

Comparison of Various Numerical Differencing Schemes in Predicting Non-Newtonian Transition Flow Through an Eccentric Annulus With Inner Cylinder in Rotation

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