Near-wellbore modeling of a horizontal well with Computational Fluid Dynamics

Szanyi, Márton L.; Hemmingsen, Casper Schytte; Yan, Wei; Walther, Jens Honoré; Glimberg, Stefan Lemvig

doi:10.1016/j.petrol.2017.10.011

Cited by 25 publications

(11 citation statements)

References 14 publications

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“…3). Numerical studies performed by a few authors [9,13,21,22,24] describe a drop in pressure in close proximity to the well screen. Szanyia et al (2018) describe pressure distribution near the well screen (crude oil inflow to a horizontal drilling well), whereas the exact pressure distribution for different screen perforations has not been calculated on a micro-scale.…”

Section: Resultsmentioning

confidence: 99%

“…Interestingly, the values of flux vectors |q| at the outer surface of the cell (Table 2), obtained for the same unit pressure value p, were very close to each other for all types of perforation. Numerical modelling in the close proximity to the deep drilled well screen was discussed in several publications [13,22,24,27]. However, the authors of the publications approach the subject differently due to the complexity of the issue and the diversity of situations that may occur in practice.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is difficult to compare the results obtained in this publication with others. Most publications focus on determining the right water entrance velocity into the drilled well screen and there are many different opinions on this topic [6,18,10,12,15,22]. There are also many publications on new analytical and numerical models explaining and quantifying the flow behaviour in aquifer systems [27].…”

Section: Resultsmentioning

confidence: 99%

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The impact of the shape of screen openings on groundwater flow to a deep drilled well

Wilk

Urbański

2018

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The authors propose a supplementary method for modelling seepage flow around a deep drilled well screen. The study applies 3D numerical modelling (FEM) in order to provide an in-depth analysis of the seepage process. The analysis of flow parameters (flux distribution q(x, t) and pressure distribution p) was conducted using the ZSoil.PC software system. The analysis indicates that the shape of perforation is of secondary importance during deep bore well screen selection.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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The impact of the shape of screen openings on groundwater flow to a deep drilled well

Wilk

Urbański

2018

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“…This challenge is typically more pronounced when drilling low permeability and tight formations 8 and even more for horizontal wellbores. 9 , 10 …”

Section: Introductionmentioning

confidence: 99%

Development of Hybrid Drilling Fluid and Enzyme–Acid Precursor-Based Clean-Up Fluid for Wells Drilled with Calcium Carbonate-Based Drilling Fluids

et al. 2020

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Significant formation damage can occur during drilling operations because of the invasion of drilling fluid fines and filtrates that lead to pore blocking and saturation alteration mechanisms. This study demonstrates the ways to minimize drilling fluid-related damage and the removal of the deposited filter cake in the carbonate reservoir through judicious selection of bridging particles using “ideal packing theory” and formulation of an enzyme-based clean-up fluid with an acid precursor. The polymer-based drill-in-fluid with a mixed grade of CaCO 3 bridging particles resulted in a compact filter cake with reduced filtration loss preventing internal pore damage significantly. Several ester hydrolysis reaction kinetics were studied, and finally, one combination was chosen as the suitable acid precursor because of its ability to generate a required concentration of acid within the downhole condition. The return permeability of mud-damaged carbonate core plugs was higher than 95% after exposure to the clean-up solution. The corrosion rates were found to be significantly below the industry limits, and the use of acid corrosion inhibitors is eliminated.

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“…A certain angle should be formed between it and the reservoir, so its inflow morphology is sharply different from that of traditional vertical wells [2]. The traditional oil well inflow performance evaluation model is no longer applicable [3]. To establish the inflow performance evaluation method of highly deviated wells, a new oil reservoir-wellbore flow model must be established.…”

Section: Introductionmentioning

confidence: 99%

Effective Model to Evaluate the Inflow Performance of Highly Deviated Wells in Anisotropic Reservoirs

Zhao¹,

Wang²,

Xue³

2018

JESTR

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Inflow performance evaluation is an important basis for the completion design of highly deviated wells, but existing evaluation models do not consider reservoir anisotropy or well deviation angle with long calculation time and certain limitations. In order to perfect the inflow performance evaluation model of highly deviated wells, a high-efficiency model evaluating their inflow performance in anisotropic reservoirs was proposed in this study. On the basis of a source function method, an oil reservoir-wellbore coupling flow equation was established, and a new model that can evaluate inflow performance of highly deviated wells in anisotropic reservoirs was proposed by introducing the anisotropic quantitative characterization method. On this basis, the influence laws of anisotropy and well deviation angle on inflow morphology, potential section, and productivity of highly deviated wells were discussed. Results indicate that the new model can consider the influences of reservoir anisotropy and well deviation on inflow performance, and the calculation only consumed 1/30 of the traditional model. Reservoir anisotropy has a great influence on the inflow performance of highly deviated wells. The smaller the anisotropy coefficient, the earlier the transient-state flow appears in the transition phase, and the later the steady-state flow appears in the subsequent phases. Anisotropy coefficient has an apparent influence on flow velocity in the wellbore, and flow rates at two ends of the wellbore decrease by 32.3% when the anisotropy coefficient increases from 1/100 to 100. The influence of well deviation angle on the highly deviated well production is enhanced as the anisotropy coefficient increases. The study contributes to the highly efficient evaluation of the inflow performance of highly deviated wells and provides a certain reference for the optimization of highly deviated wells and production forecast.

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Near-wellbore modeling of a horizontal well with Computational Fluid Dynamics

Cited by 25 publications

References 14 publications

The impact of the shape of screen openings on groundwater flow to a deep drilled well

The impact of the shape of screen openings on groundwater flow to a deep drilled well

Development of Hybrid Drilling Fluid and Enzyme–Acid Precursor-Based Clean-Up Fluid for Wells Drilled with Calcium Carbonate-Based Drilling Fluids

Effective Model to Evaluate the Inflow Performance of Highly Deviated Wells in Anisotropic Reservoirs

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