Iterative techniques in modeling of multi-phase flow in advanced wells and the near well region

Johansen, T. H.; Khoriakov, Vitaly

doi:10.1016/j.petrol.2006.11.013

Cited by 21 publications

(4 citation statements)

References 6 publications

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“…6(a). In the second approach, the completion model is coupled with a nodal near-well model as described in Johansen and Khoriakov (2007); the transmissibilities in the nodal near-well model are computed from a fine-scale near-well simulation. This approach is illustrated in Fig.…”

Section: Near-well and Completion Couplingmentioning

confidence: 99%

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Huang

Burch²,

Brown

et al. 2010

SPE Annual Technical Conference and Exhibition

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In this paper, we present a workflow that allows for accurate well and completion performance simulations to be conducted automatically. A number of innovative technologies are introduced to enable this workflow. First, a mesh generator was developed to automatically construct high quality, near-well meshes for wells with different deviation angles and variable producing segments. Second, the enriched finite element method, a new numerical technique, was used to provide detailed modeling of geological features (such as horizons, natural fractures, and no-flow boundaries) and completion characteristics (such as fractured completions and perforations) without having to manually construct a mesh that honors these complex geometries in detail. Third, a procedure was developed to fully couple the completion hydraulics and the near-well porous media flows.To demonstrate the effectiveness of the new technologies, three application examples will be detailed: (1) a sensitivity analysis of partial completion or stimulation on well performance; (2) an evaluation of the productivity of a new sand control device that uses MazeFlo TM screen technology and contains a multitude of segmented production zones; and (3) the design of a multiply-fractured completion. Throughout these examples, guidelines on maximizing the efficiency of completed segment, stimulated well length, or fractured completion are summarized.

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Section: Near-well and Completion Couplingmentioning

confidence: 99%

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Huang

Burch²,

Brown

et al. 2010

SPE Annual Technical Conference and Exhibition

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show abstract

“…Because horizontal wells typically have a higher production at the heel than at the toe of the well as a result of uneven formation damage and the pressure difference in the long pipe, premature water or gas breakthrough is a common issue (Birchenko et al 2010;Feng et al 2012). Eventually, because of the difference in density and viscosity of oil, water, and gas, cresting occurs, severely decreasing hydrocarbon production (Joshi 1991). Placing ICDs along the completion introduces a passively controlled pressure drop, and can result in a more uniform influx along the completion.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Erosion Modeling of a Nozzle-Based Inflow-Control Device

Olsen

Hemmingsen

Bergmann³

et al. 2017

SPE Drilling &Amp; Completion

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In the petroleum industry, water-and-gas breakthrough in hydrocarbon reservoirs is a common issue that eventually leads to uneconomic production. To extend the economic production lifetime, inflow-control devices (ICDs) are designed to delay the water-and-gas breakthrough. Because the lifetime of a hydrocarbon reservoir commonly exceeds 20 years and it is a harsh environment, the reliability of the ICDs is vital. With computational fluid dynamics (CFD), an inclined nozzlebased ICD is characterized in terms of the Reynolds number, discharge coefficient, and geometric variations. The analysis shows that especially the nozzle edges affect the ICD flow characteristics. To apply the results, an equation for the discharge coefficient is proposed. The Lagrangian particle approach is used to further investigate the ICD. This allows for erosion modeling by injecting sand particles into the system. By altering the geometry and modeling several scenarios while analyzing the erosion in the nozzles and at the nozzle edges, an optimized design for incompressible media is found. With a filleted design and an erosion-resistant material, the mean erosion rate in the nozzles may be reduced by a factor of more than 2,500.

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“…If a comparison is made between a full field reservoir model using this approach with an advanced well completion and the same reservoir model with a simple completion, the computational time is considerably higher with the advanced completion. Coupled wellbore and reservoir models have also been developed for advanced completions in Aziz (2001), Johansen and Khoriakov (2007) and Khoriakov et al (2012).…”

Section: Introductionmentioning

confidence: 99%

Analytical coupled axial and radial productivity model for steady-state flow in horizontal wells

Johansen

James

Cao

2015

IJPE

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A new analytical model for coupled radial well inflow and axial flow has been developed and applied to horizontal well productivity calculations. This analytical model results in a linear pressure distribution in the axial direction and a logarithmic pressure distribution in the radial direction. The analytical solution is investigated for two special cases where a one-dimensional analytical solution already exists. It is proven that the model reduces to the classical radial inflow model in the case when the axial pressure gradient is zero and to the linear Darcy equation when there is zero radial inflow. The new equations are also used to evaluate the well flow rates when the skin effect is included. The analytical solution verifies that the axial flow in the reservoir, in general, cannot be ignored, particularly in reservoirs with high permeability and high well productivity. The analytical model is used to quantify the importance of frictional losses in well productivity calculations. An example on how the analytical model can be used in hand calculations to determine well productivity and frictional losses is presented.

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Iterative techniques in modeling of multi-phase flow in advanced wells and the near well region

Cited by 21 publications

References 6 publications

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Characterization and Erosion Modeling of a Nozzle-Based Inflow-Control Device

Analytical coupled axial and radial productivity model for steady-state flow in horizontal wells

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